Formation Age and Magmatic Source of the Wulantaolegai Cu-Ni Deposit in Central Inner Mongolia

doi:10.19657/j.geoscience.1000-8527.2024.088

Abstract

Abstract:

The newly discovered medium-scale Wulantaolegai copper-nickel sulfide deposit marks a significant breakthrough in nickel prospecting in central Inner Mongolia.Central Inner Mongolia hosts several important mafic and ultramafic metallogenic belts.The Wulantaolegai Cu-Ni deposit formed within the Huanghuatan and Xiaonanshan mineralization belt.To understand the formation age and tectonic setting of the deposit and its correlations with the metallogenic zone,we conducted LA-ICP-MS zircon U-Pb dating and Hf isotope analysis,whole-rock major and trace element geochemistry,and Sr-Nd isotope analyses of gabbro and lamprophyre in the mining area.The results show that the U-Pb age of the gabbro is 270.8±3.2 Ma,and U-Pb ages of the lamprophyre are approximately 251.5-250.9 Ma.They recorded two stages of magmatic activity during the extension following the collision between the Siberian Craton and the North China Craton.The gabbro shows a sub-alkaline tholeiite series with a SiO₂ content of approximately 47.3%-51.5% and a Na₂O+K₂O content of approximately 1.0%-3.1%.The high (⁸⁷Sr/⁸⁶Sr)_i value of approximately 0.7199-0.7239 and low ε_Nd(t) value of approximately -12.18 to -9.55 suggest that the source of the magma may be EM Ⅱ-type enriched lithospheric mantle.A low SiO₂ content of approximately 47.72%-52.15% and Na₂O+K₂O content of approximately 4.47%-9.43% indicates that the lamprophyre belongs to the calc-alkaline potassium series.The peralkalic lamprophyre,enriched in LILE and LREE but depleted in HFSE (such as Nb,Ta and Ti),as well as its negative ε_Hf(t) of approximately -20.0--2.9,indicates an enriched lithospheric mantle metasomatized by subduction fluids.These research achievements provide valuable insights for ore prospecting in the regional mafic and ultramafic rock bodies.

Key words: formation age, petrogenesis, copper-nickel sulfide deposit, Wulantaolegai

CLC Number:

WANG Jiaxin, JIAO Jiangang, MA Yunfei, LI Feng, GAO Chao. Formation Age and Magmatic Source of the Wulantaolegai Cu-Ni Deposit in Central Inner Mongolia[J]. Geoscience, 2024, 38(04): 991-1012.

Figures/Tables 16

Fig.1 Tectonic location of the Wulantaolegai mining area (after Fang et al.[25])

Fig.2 Sketch geological map (a) and line 16 geological cross-section (b) in the Wulantaolegai mining area

Fig.3 Photographs and photomicrographs of hornblendite,gabbro and lamprophyre from the Wulantaolegai mining area

Fig.4 Cathodoluminescence (CL) images of zircons from gabbro and lamprophyre in the Wulantaolegai mining area

Fig.5 U-Pb concordia diagrams (a)(c)(f) and weight average diagrams (b)(d)(e)(g)(h) of gabbro and lamprophyre in the Wulantaolegai mining area

Table 1 Analytical results of LA-ICP-MS zircon U-Pb ages of gabbro and lamprophyre in Wulantaolegai mining area

分析点		含量(10^-6)				Th/U		同位素比值												同位素年龄(Ma)
分析点		Th		U		Th/U		²⁰⁷Pb/ ²⁰⁶Pb		1σ		²⁰⁷Pb/ ²³⁵U		1σ		²⁰⁶Pb/ ²³⁸U		1σ		²⁰⁷Pb/ ²⁰⁶Pb		1σ		²⁰⁷Pb/ ²³⁵U		1σ		²⁰⁶Pb/ ²³⁸U	1σ
22ZKX0202-1云斜煌岩
22ZKX0202-1-1		110		124		0.88		0.0513		0.0053		0.2818		0.0287		0.0396		0.0009		254		222		252		23		251	6
22ZKX0202-1-2		48		167		0.28		0.0515		0.0043		0.2818		0.0232		0.0397		0.0011		261		191		252		18		251	7
22ZKX0202-1-3		120		115		1.05		0.0502		0.0035		0.2969		0.0195		0.0437		0.0009		211		168		264		15		276	5
22ZKX0202-1-4		86		119		0.73		0.0531		0.0063		0.3167		0.0346		0.0439		0.0015		345		272		279		27		277	9
22ZKX0202-1-5		265		1055		0.25		0.0501		0.0015		0.3049		0.0104		0.0437		0.0008		211		103		270		8		276	5
22ZKX0202-1-6		109		1453		0.08		0.0479		0.0015		0.2913		0.0093		0.0437		0.0007		100		74		260		7		276	5
22ZKX0202-1-7		83		650		0.13		0.0567		0.0027		0.3447		0.0157		0.0437		0.0008		480		106		301		12		276	5
22ZKX0202-1-8		182		614		0.30		0.0949		0.0024		2.9822		0.1164		0.2231		0.0061		1528		48		1403		30		1298	32
22ZKX0202-1-9		161		482		0.33		0.0558		0.0027		0.3364		0.0157		0.0437		0.0008		443		109		294		12		276	5
22ZKX0202-1-11		151		614		0.25		0.1202		0.0040		2.5316		0.0911		0.1509		0.0033		1959		60		1281		26		906	19
22ZKX0202-1-12		147		733		0.20		0.0512		0.0025		0.2868		0.0134		0.0403		0.0007		256		118		256		11		255	4
22ZKX0202-1-13		17		641		0.03		0.0566		0.0020		0.4422		0.0160		0.0562		0.0010		476		80		372		11		352	6
22ZKX0202-1-14		185		340		0.54		0.0544		0.0025		0.3295		0.0146		0.0436		0.0007		387		102		289		11		275	5
22ZKX0202-1-15		178		925		0.19		0.0503		0.0019		0.2723		0.0095		0.0392		0.0006		209		87		245		8		248	4
22ZKX0202-1-16		210		507		0.41		0.0527		0.0034		0.3186		0.0206		0.0437		0.0011		317		146		281		16		276	7
22ZKX0202-1-17		167		209		0.80		0.1329		0.0034		6.5346		0.1950		0.3532		0.0058		2137		45		2051		26		1950	28
22ZKX0202-1-21		342		350		0.98		0.0537		0.0042		0.2985		0.0250		0.0402		0.0011		367		180		265		20		254	7
22ZKX0202-1-22		78		338		0.23		0.1109		0.0028		3.8465		0.1113		0.2503		0.0045		1814		45		1603		23		1440	23
22ZKX0202-1-24		114		673		0.17		0.0514		0.0032		0.2800		0.0184		0.0392		0.0010		261		144		251		15		248	6
22ZKX0202-1-25		60		190		0.31		0.1195		0.0032		3.8735		0.1235		0.2345		0.0058		1950		46		1608		26		1358	30
22ZKX0202-1-26		182		383		0.47		0.0513		0.0023		0.3253		0.0148		0.0457		0.0007		254		104		286		11		288	4
22ZKX0202-1-27		208		288		0.72		0.1277		0.0033		5.6078		0.1603		0.3160		0.0053		2066		45		1917		25		1770	26
22ZKX0202-1-28		155		868		0.18		0.0496		0.0024		0.2728		0.0136		0.0395		0.0007		176		113		245		11		250	4
22ZKX0202-1-30		56		72		0.78		0.0521		0.0056		0.2772		0.0285		0.0389		0.0013		300		243		248		23		246	8
22ZKX0202-1-32		399		933		0.43		0.0517		0.0019		0.2875		0.0100		0.0402		0.0007		272		83		257		8		254	5
22ZKX0202-1-33		222		408		0.54		0.0517		0.0020		0.3153		0.0130		0.0437		0.0008		333		89		278		10		276	5
22ZKX0202-1-34		39		709		0.05		0.0705		0.0021		0.8840		0.0268		0.0905		0.0014		943		66		643		14		558	8
22ZKX0202-1-35		274		448		0.61		0.1347		0.0038		6.2018		0.1746		0.3323		0.0066		2161		50		2005		25		1850	32
22ZKX0202-1-37		146		514		0.28		0.0622		0.0023		0.4342		0.0160		0.0505		0.0008		683		74		366		11		318	5
22ZKX0202-1-38		236		414		0.57		0.1274		0.0035		4.9914		0.1519		0.2828		0.0056		2062		48		1818		26		1605	28
22ZKX0202-1-39		293		826		0.35		0.0529		0.0024		0.2887		0.0122		0.0398		0.0007		324		110		258		10		251	5
22ZKX0202-1-40		314		255		1.23		0.0528		0.0051		0.3050		0.0319		0.0414		0.0011		324		222		270		25		261	7
22ZK1406-5云斜煌岩
22ZK1406-5-1		49		81		0.06		0.0056		0.3542		0.0308		0.0406		0.0010		0.2898		190		308		23		257		6	258
22ZK1406-5-2		133		108		0.05		0.0049		0.3216		0.0274		0.0426		0.0011		0.2991		201		283		21		269		7	273
22ZK1406-5-3		50		86		0.06		0.0051		0.3335		0.0264		0.0389		0.0009		0.2955		170		292		20		246		6	254
22ZK1406-5-4		128		1061		0.05		0.0021		0.2929		0.0120		0.0396		0.0006		0.3936		87		261		9		251		4	282
22ZK1406-5-5		180		302		0.05		0.0027		0.3023		0.0154		0.0412		0.0007		0.3521		115		268		12		260		5	297
22ZK1406-5-6		191		465		0.05		0.0034		0.2937		0.0178		0.0416		0.0008		0.3027		155		261		14		263		5	289
22ZK1406-5-7		70		119		0.08		0.0027		2.1352		0.0704		0.1922		0.0032		0.5113		67		1160		23		1133		18	1149
22ZK1406-5-8		233		628		0.05		0.0019		0.2917		0.0116		0.0431		0.0007		0.4337		97		260		9		272		5	278
22ZK1406-5-9		74		225		0.06		0.0035		0.3195		0.0192		0.0427		0.0009		0.3376		143		282		15		270		5	257
分析点	含量(10^-6)				Th/U		同位素比值												同位素年龄(Ma)
分析点	Th		U		Th/U		²⁰⁷Pb/ ²⁰⁶Pb		1σ		²⁰⁷Pb/ ²³⁵U		1σ		²⁰⁶Pb/ ²³⁸U		1σ		²⁰⁷Pb/ ²⁰⁶Pb		1σ		²⁰⁷Pb/ ²³⁵U		1σ		²⁰⁶Pb/ ²³⁸U		1σ
22ZK1406-5-10		129		188		0.05		0.0032		0.2771		0.0184		0.0412		0.0010		0.3500		144		248		15		260		6	286
22ZK1406-5-12		224		231		0.06		0.0035		0.4443		0.0251		0.0505		0.0012		0.4352		115		373		18		317		8	341
22ZK1406-5-13		22		204		0.07		0.0046		0.4377		0.0328		0.0484		0.0012		0.3250		149		369		23		305		7	603
22ZK1406-5-14		137		168		0.05		0.0042		0.3144		0.0247		0.0414		0.0008		0.2411		172		278		19		261		5	266
22ZK1406-5-15		161		95		0.05		0.0044		0.2747		0.0239		0.0394		0.0008		0.2385		202		246		19		249		5	243
22ZK1406-5-17		81		321		0.05		0.0027		0.3069		0.0156		0.0420		0.0008		0.3864		113		272		12		265		5	285
22ZK1406-5-18		205		99		0.06		0.0057		0.3161		0.0285		0.0403		0.0009		0.2462		215		279		22		255		6	244
22ZK1406-5-19		201		149		0.05		0.0047		0.3121		0.0255		0.0421		0.0008		0.2353		194		276		20		266		5	293
22ZK1406-5-20		401		319		0.05		0.0027		0.2987		0.0158		0.0429		0.0007		0.3287		129		265		12		271		5	278
22ZK1406-5-21		146		339		0.05		0.0027		0.2986		0.0149		0.0418		0.0009		0.4263		112		265		12		264		6	282
22ZK1406-5-22		87		80		0.06		0.0053		0.3470		0.0294		0.0426		0.0010		0.2823		199		302		22		269		6	290
22ZK1406-5-23		187		327		0.10		0.0028		2.1790		0.0690		0.1576		0.0031		0.6308		51		1174		22		943		18	940
22ZK1406-5-24		43		117		0.05		0.0045		0.3145		0.0277		0.0432		0.0012		0.3127		194		278		21		272		7	278
22ZK1406-5-25		129		194		0.05		0.0035		0.2770		0.0181		0.0408		0.0009		0.3193		163		248		14		258		5	240
22ZK1406-5-26		324		310		0.05		0.0028		0.2849		0.0160		0.0405		0.0008		0.3336		123		255		13		256		5	253
22ZK1406-5-27		68		932		0.05		0.0019		0.2802		0.0101		0.0394		0.0005		0.3602		85		251		8		249		3	245
22ZK1406-5-28		111		166		0.05		0.0036		0.2991		0.0213		0.0419		0.0007		0.2285		159		266		17		264		4	281
22ZK1406-5-29		64		132		0.06		0.0042		0.4627		0.0361		0.0506		0.0020		0.5105		141		386		25		318		12	338
22ZK1406-5-30		224		233		0.05		0.0033		0.2838		0.0175		0.0390		0.0007		0.2865		139		254		14		247		4	235
22ZK1406-5-32		105		115		0.05		0.0034		0.2827		0.0217		0.0434		0.0010		0.3149		172		253		17		274		6	263
22ZK1406-5-33		144		436		0.05		0.0026		0.3091		0.0154		0.0424		0.0005		0.2512		108		274		12		268		3	283
22ZK1406-5-34		66		415		0.07		0.0023		0.6057		0.0244		0.0631		0.0015		0.5915		67		481		15		394		9	462
22ZK1406-5-35		138		149		0.06		0.0046		0.3418		0.0277		0.0432		0.0008		0.2420		176		299		21		273		5	279
22ZK1406-5-36		356		380		0.05		0.0025		0.2924		0.0137		0.0416		0.0007		0.3515		111		260		11		263		4	245
22ZK1406-5-37		169		217		0.06		0.0071		0.3550		0.0410		0.0411		0.0009		0.1971		246		308		31		260		6	239
22ZK1406-5-38		287		262		0.05		0.0032		0.2670		0.0181		0.0405		0.0009		0.3246		148		240		15		256		6	236
22ZK1406-5-39		200		712		0.06		0.0017		0.4328		0.0188		0.0560		0.0016		0.6729		67		365		13		352		10	386
22ZK1406-5-40		62		217		0.05		0.0033		0.3081		0.0183		0.0426		0.0009		0.3566		136		273		14		269		6	234
20WLT-17蚀变辉长岩
20WLT-17-1		278		701		0.40		0.1224		0.0019		5.2600		0.1400		0.3123		0.0056		1988		28		1861		22		1752	27
20WLT-17-2		251		795		0.32		0.1210		0.0015		6.1010		0.1200		0.3601		0.0044		1969		21		1992		16		1982	21
20WLT-17-3		156		757		0.21		0.1198		0.0018		5.6800		0.1500		0.3414		0.0052		1951		27		1927		22		1893	25
20WLT-17-4		203		818		0.25		0.1197		0.0008		5.4230		0.1100		0.3270		0.0042		1950		11		1887		18		1823	20
20WLT-17-5		85		553		0.15		0.1195		0.0009		5.5460		0.1100		0.3346		0.0036		1947		14		1906		17		1860	18
20WLT-17-6		160		489		0.33		0.1219		0.0013		6.0680		0.1200		0.3611		0.0037		1980		19		1985		17		1987	17
20WLT-17-7		186		593		0.31		0.1205		0.0010		5.7650		0.1200		0.3458		0.0045		1961		15		1939		18		1914	22
20WLT-17-8		326		499		0.65		0.0533		0.0029		0.3460		0.0190		0.0468		0.0010		310		120		301		15		295	6
20WLT-17-10		90		161		0.56		0.0531		0.0029		0.3200		0.0180		0.0440		0.0007		260		120		280		14		278	5
20WLT-17-11		230		1742		0.13		0.1191		0.0013		4.6280		0.1100		0.2812		0.0048		1941		20		1753		20		1597	24
20WLT-17-12		495		1436		0.34		0.1194		0.0010		5.2840		0.1100		0.3214		0.0041		1944		14		1865		17		1796	20
20WLT-17-13		194		763		0.25		0.1193		0.0008		5.5880		0.1000		0.3382		0.0032		1944		12		1913		16		1878	16
20WLT-17-14		263		1031		0.26		0.1197		0.0008		5.6000		0.1200		0.3377		0.0047		1950		12		1914		19		1874	22
20WLT-17-15		231		696		0.33		0.1204		0.0012		5.7800		0.1600		0.3474		0.0064		1961		18		1939		24		1921	31
分析点	含量(10^-6)				Th/U		同位素比值												同位素年龄(Ma)
分析点	Th		U		Th/U		²⁰⁷Pb/ ²⁰⁶Pb		1σ		²⁰⁷Pb/ ²³⁵U		1σ		²⁰⁶Pb/ ²³⁸U		1σ		²⁰⁷Pb/ ²⁰⁶Pb		1σ		²⁰⁷Pb/ ²³⁵U		1σ		²⁰⁶Pb/ ²³⁸U		1σ
20WLT-17-16	264		1087		0.24		0.1164		0.0009		4.7890		0.1100		0.2970		0.0052		1899		14		1780		19		1675		26
20WLT-17-17	185		835		0.22		0.1170		0.0014		5.2770		0.1100		0.3226		0.0040		1909		21		1864		18		1802		19
20WLT-17-19	120		403		0.30		0.1184		0.0013		5.6900		0.1200		0.3483		0.0046		1929		19		1928		18		1926		22
20WLT-17-20	351		1020		0.34		0.1179		0.0013		5.7190		0.1200		0.3498		0.0046		1922		20		1936		20		1933		22
20WLT-17-21	205		604		0.34		0.1199		0.0013		5.8250		0.1200		0.3534		0.0042		1951		20		1949		17		1951		20
20WLT-17-23	610		1353		0.45		0.1192		0.0009		5.0830		0.1200		0.3071		0.0051		1941		14		1831		20		1725		25
20WLT-17-24	104		240		0.43		0.1187		0.0018		5.7700		0.1300		0.3492		0.0042		1931		27		1943		18		1933		19
20WLT-17-25	86		325		0.26		0.1207		0.0019		5.6720		0.1300		0.3413		0.0040		1961		28		1926		20		1895		20
20WLT-17-26	196		570		0.34		0.1201		0.0012		5.7650		0.1100		0.3497		0.0041		1954		18		1941		17		1933		20
20WLT-17-27	242		1218		0.20		0.1176		0.0008		4.8150		0.0990		0.2963		0.0036		1920		12		1786		17		1672		18
20WLT-17-29	127		272		0.47		0.0506		0.0019		0.3160		0.0130		0.0451		0.0006		185		77		277		10		285		4
20WLT-17-30	84		216		0.39		0.1192		0.0015		5.8170		0.1300		0.3530		0.0043		1938		23		1947		19		1951		21
20WLT-17-31	227		902		0.25		0.1175		0.0017		5.7800		0.1400		0.3528		0.0058		1915		26		1942		21		1947		27
21WLT-7辉长岩
21WLT-7-001	277		84		0.30		0.1168		0.0024		5.7216		0.1256		0.3556		0.0076		1907		37		1935		19		1961		36
21WLT-7-002	249		118		0.47		0.0544		0.0018		0.4666		0.0155		0.0623		0.0014		387		72		389		11		389		8
21WLT-7-003	166		94		0.56		0.0564		0.0017		0.4729		0.0147		0.0608		0.0013		469		67		393		10		381		8
21WLT-7-004	229		111		0.48		0.1154		0.0025		5.3910		0.1200		0.3390		0.0072		1886		38		1883		19		1882		35
21WLT-7-005	451		181		0.40		0.1216		0.0025		4.7382		0.1028		0.2829		0.0060		1979		36		1774		18		1606		30
21WLT-7-006	194		205		1.06		0.0640		0.0016		1.1136		0.0280		0.1264		0.0027		740		51		760		13		767		16
21WLT-7-007	248		144		0.58		0.1182		0.0025		5.6894		0.1247		0.3494		0.0074		1929		37		1930		19		1932		35
21WLT-7-008	191		61		0.32		0.1179		0.0025		5.6452		0.1257		0.3474		0.0074		1925		38		1923		19		1922		35
21WLT-7-009	140		69		0.50		0.1784		0.0037		12.4786		0.2732		0.5076		0.0108		2638		34		2641		21		2646		46
21WLT-7-010	330		203		0.61		0.1169		0.0024		5.5847		0.1217		0.3466		0.0074		1909		37		1914		19		1919		35
21WLT-7-011	284		117		0.41		0.1169		0.0024		5.4876		0.1200		0.3406		0.0072		1909		37		1899		19		1890		35
21WLT-7-012	303		118		0.39		0.1157		0.0024		5.5617		0.1223		0.3487		0.0074		1892		37		1910		19		1928		35
21WLT-7-013	501		176		0.35		0.1161		0.0024		5.5018		0.1193		0.3439		0.0073		1897		37		1901		19		1906		35
21WLT-7-015	249		226		0.91		0.0500		0.0016		0.2939		0.0093		0.0427		0.0009		193		71		262		7		269		6
21WLT-7-016	164		106		0.65		0.0517		0.0019		0.3064		0.0111		0.0430		0.0010		273		81		271		9		271		6
21WLT-7-017	401		147		0.37		0.1174		0.0024		5.5790		0.1212		0.3449		0.0073		1917		37		1913		19		1910		35
21WLT-7-018	796		38		0.05		0.1161		0.0024		5.3712		0.1159		0.3358		0.0071		1896		36		1880		18		1867		34
21WLT-7-019	402		272		0.68		0.1173		0.0024		5.3953		0.1173		0.3338		0.0071		1915		37		1884		19		1857		34
21WLT-7-020	202		94		0.47		0.1164		0.0025		5.5202		0.1238		0.3442		0.0073		1901		38		1904		19		1907		35
21WLT-7-021	376		70		0.19		0.1229		0.0025		5.9742		0.1297		0.3526		0.0075		1999		36		1972		19		1947		36
21WLT-7-022	279		184		0.66		0.0515		0.0020		0.3008		0.0114		0.0424		0.0009		264		84		267		9		268		6
21WLT-7-023	353		304		0.86		0.0563		0.0014		0.5471		0.0141		0.0705		0.0015		465		55		443		9		439		9
21WLT-7-024	474		159		0.34		0.0522		0.0014		0.3170		0.0088		0.0441		0.0010		294		60		280		7		278		6
21WLT-7-025	311		118		0.38		0.1197		0.0025		5.7020		0.1259		0.3457		0.0073		1951		37		1932		19		1914		35
WLT23-09辉长岩
WLT23-09-1	144		351		0.41		0.1194		0.0037		5.8128		0.1725		0.3504		0.0051		1948		55		1948		26		1937		25
WLT23-09-2	133		333		0.40		0.1195		0.0030		5.7353		0.1491		0.3452		0.0045		1948		46		1937		22		1912		21
WLT23-09-3	139		423		0.33		0.1196		0.0035		5.5593		0.1806		0.3343		0.0079		1950		84		1910		28		1859		38
WLT23-09-4	97		293		0.33		0.1202		0.0029		5.7128		0.1408		0.3417		0.0051		1959		75		1933		21		1895		24
分析点	含量(10^-6)				Th/U		同位素比值												同位素年龄(Ma)
分析点	Th		U		Th/U		²⁰⁷Pb/ ²⁰⁶Pb		1σ		²⁰⁷Pb/ ²³⁵U		1σ		²⁰⁶Pb/ ²³⁸U		1σ		²⁰⁷Pb/ ²⁰⁶Pb		1σ		²⁰⁷Pb/ ²³⁵U		1σ		²⁰⁶Pb/ ²³⁸U		1σ
WLT23-09-5	112		602		0.19		0.1185		0.0035		5.4396		0.1620		0.3303		0.0077		1933		53		1891		26		1840		37
WLT23-09-6	185		402		0.46		0.1195		0.0029		5.6673		0.1371		0.3404		0.0048		1950		43		1926		21		1889		23
WLT23-09-7	154		438		0.35		0.1142		0.0035		5.4832		0.1649		0.3446		0.0063		1933		56		1898		26		1909		30
WLT23-09-8	361		345		1.05		0.0515		0.0030		0.2905		0.0167		0.0403		0.0006		265		131		259		13		255		4
WLT23-09-9	209		590		0.35		0.1142		0.0031		5.2227		0.1459		0.3275		0.0053		1933		50		1856		24		1826		26
WLT23-09-10	112		250		0.45		0.1184		0.0036		6.2254		0.1758		0.3773		0.0059		1932		54		2008		25		2064		28
WLT23-09-11	118		489		0.24		0.1195		0.0036		5.4461		0.1737		0.3262		0.0064		1950		54		1892		27		1820		31
WLT23-09-12	137		349		0.39		0.1196		0.0034		5.6688		0.1549		0.3400		0.0054		1950		51		1927		24		1886		26
WLT23-09-13	130		963		0.13		0.1185		0.0030		5.5410		0.1453		0.3349		0.0046		1944		51		1907		23		1862		22
WLT23-09-14	137		312		0.44		0.1178		0.0035		6.0715		0.1932		0.3690		0.0057		1924		53		1986		28		2025		27
WLT23-09-15	112		305		0.37		0.1191		0.0030		5.7088		0.1430		0.3441		0.0044		1944		45		1933		22		1906		21
WLT23-09-16	128		343		0.37		0.1198		0.0033		5.8460		0.1528		0.3513		0.0054		1954		82		1953		23		1941		26
WLT23-09-17	146		399		0.37		0.1196		0.0034		5.8723		0.1907		0.3526		0.0081		1951		84		1957		28		1947		39
WLT23-09-18	284		688		0.41		0.1192		0.0033		6.0965		0.1759		0.3675		0.0059		1946		50		1990		25		2018		28
WLT23-09-19	136		378		0.36		0.1213		0.0036		5.9229		0.1824		0.3513		0.0065		1976		53		1965		27		1941		31
WLT23-09-20	72		403		0.18		0.1199		0.0032		5.6686		0.1619		0.3401		0.0050		1954		80		1927		25		1887		24
WLT23-09-21	550		912		0.60		0.1288		0.0032		6.7627		0.1733		0.3789		0.0053		2081		44		2081		23		2071		25
WLT23-09-22	147		405		0.36		0.1286		0.0034		5.8473		0.1618		0.3280		0.0051		2080		46		1953		24		1829		25
WLT23-09-23	201		411		0.49		0.1230		0.0029		6.1198		0.1490		0.3588		0.0047		2067		42		1993		21		1976		22
WLT23-09-25	164		351		0.47		0.1244		0.0029		6.1679		0.1475		0.3579		0.0045		2021		36		2000		21		1972		21
WLT23-09-26	173		723		0.24		0.1249		0.0028		5.9392		0.1433		0.3437		0.0052		2028		45		1967		21		1904		25
WLT23-09-27	134		323		0.41		0.1208		0.0028		5.7128		0.1409		0.3418		0.0045		1969		41		1933		21		1895		22
WLT23-09-28	984		899		1.09		0.0518		0.0037		0.2887		0.0195		0.0406		0.0009		276		165		258		15		257		6
WLT23-09-29	132		463		0.29		0.1213		0.0028		5.7092		0.1425		0.3403		0.0044		1976		42		1933		22		1888		21
WLT23-09-30	116		433		0.27		0.1240		0.0032		6.1539		0.1659		0.3589		0.0047		2014		45		1998		24		1977		22
WLT23-09-31	117		390		0.30		0.1194		0.0031		6.0512		0.1637		0.3667		0.0050		1947		45		1983		24		2014		24
WLT23-09-32	169		522		0.32		0.1301		0.0032		6.2430		0.1722		0.3467		0.0050		2098		44		2010		24		1919		24
WLT23-09-33	80		257		0.31		0.1245		0.0030		6.3903		0.1594		0.3709		0.0046		2022		38		2031		22		2034		22
WLT23-09-34	113		303		0.37		0.1220		0.0028		5.9249		0.1359		0.3514		0.0046		1987		39		1965		20		1941		22
WLT23-09-35	160		655		0.24		0.1207		0.0026		5.7534		0.1347		0.3444		0.0050		1969		39		1939		20		1908		24
WLT23-09-36	93		230		0.40		0.1198		0.0028		6.0544		0.1480		0.3650		0.0050		1953		36		1984		21		2006		24
WLT23-09-37	204		651		0.31		0.1189		0.0026		5.7801		0.1255		0.3514		0.0046		1940		44		1943		19		1941		22
WLT23-09-38	209		857		0.24		0.1208		0.0026		5.5727		0.1256		0.3334		0.0048		1969		39		1912		19		1855		23
WLT23-09-39	174		648		0.27		0.1201		0.0028		5.7071		0.1356		0.3428		0.0046		1958		41		1932		21		1900		22
WLT23-09-40	152		426		0.36		0.1165		0.0029		5.5328		0.1450		0.3426		0.0049		1903		45		1906		23		1899		23

Table 1 Analytical results of LA-ICP-MS zircon U-Pb ages of gabbro and lamprophyre in Wulantaolegai mining area

分析点		含量(10^-6)				Th/U		同位素比值												同位素年龄(Ma)
分析点		Th		U		Th/U		²⁰⁷Pb/ ²⁰⁶Pb		1σ		²⁰⁷Pb/ ²³⁵U		1σ		²⁰⁶Pb/ ²³⁸U		1σ		²⁰⁷Pb/ ²⁰⁶Pb		1σ		²⁰⁷Pb/ ²³⁵U		1σ		²⁰⁶Pb/ ²³⁸U	1σ
22ZKX0202-1云斜煌岩
22ZKX0202-1-1		110		124		0.88		0.0513		0.0053		0.2818		0.0287		0.0396		0.0009		254		222		252		23		251	6
22ZKX0202-1-2		48		167		0.28		0.0515		0.0043		0.2818		0.0232		0.0397		0.0011		261		191		252		18		251	7
22ZKX0202-1-3		120		115		1.05		0.0502		0.0035		0.2969		0.0195		0.0437		0.0009		211		168		264		15		276	5
22ZKX0202-1-4		86		119		0.73		0.0531		0.0063		0.3167		0.0346		0.0439		0.0015		345		272		279		27		277	9
22ZKX0202-1-5		265		1055		0.25		0.0501		0.0015		0.3049		0.0104		0.0437		0.0008		211		103		270		8		276	5
22ZKX0202-1-6		109		1453		0.08		0.0479		0.0015		0.2913		0.0093		0.0437		0.0007		100		74		260		7		276	5
22ZKX0202-1-7		83		650		0.13		0.0567		0.0027		0.3447		0.0157		0.0437		0.0008		480		106		301		12		276	5
22ZKX0202-1-8		182		614		0.30		0.0949		0.0024		2.9822		0.1164		0.2231		0.0061		1528		48		1403		30		1298	32
22ZKX0202-1-9		161		482		0.33		0.0558		0.0027		0.3364		0.0157		0.0437		0.0008		443		109		294		12		276	5
22ZKX0202-1-11		151		614		0.25		0.1202		0.0040		2.5316		0.0911		0.1509		0.0033		1959		60		1281		26		906	19
22ZKX0202-1-12		147		733		0.20		0.0512		0.0025		0.2868		0.0134		0.0403		0.0007		256		118		256		11		255	4
22ZKX0202-1-13		17		641		0.03		0.0566		0.0020		0.4422		0.0160		0.0562		0.0010		476		80		372		11		352	6
22ZKX0202-1-14		185		340		0.54		0.0544		0.0025		0.3295		0.0146		0.0436		0.0007		387		102		289		11		275	5
22ZKX0202-1-15		178		925		0.19		0.0503		0.0019		0.2723		0.0095		0.0392		0.0006		209		87		245		8		248	4
22ZKX0202-1-16		210		507		0.41		0.0527		0.0034		0.3186		0.0206		0.0437		0.0011		317		146		281		16		276	7
22ZKX0202-1-17		167		209		0.80		0.1329		0.0034		6.5346		0.1950		0.3532		0.0058		2137		45		2051		26		1950	28
22ZKX0202-1-21		342		350		0.98		0.0537		0.0042		0.2985		0.0250		0.0402		0.0011		367		180		265		20		254	7
22ZKX0202-1-22		78		338		0.23		0.1109		0.0028		3.8465		0.1113		0.2503		0.0045		1814		45		1603		23		1440	23
22ZKX0202-1-24		114		673		0.17		0.0514		0.0032		0.2800		0.0184		0.0392		0.0010		261		144		251		15		248	6
22ZKX0202-1-25		60		190		0.31		0.1195		0.0032		3.8735		0.1235		0.2345		0.0058		1950		46		1608		26		1358	30
22ZKX0202-1-26		182		383		0.47		0.0513		0.0023		0.3253		0.0148		0.0457		0.0007		254		104		286		11		288	4
22ZKX0202-1-27		208		288		0.72		0.1277		0.0033		5.6078		0.1603		0.3160		0.0053		2066		45		1917		25		1770	26
22ZKX0202-1-28		155		868		0.18		0.0496		0.0024		0.2728		0.0136		0.0395		0.0007		176		113		245		11		250	4
22ZKX0202-1-30		56		72		0.78		0.0521		0.0056		0.2772		0.0285		0.0389		0.0013		300		243		248		23		246	8
22ZKX0202-1-32		399		933		0.43		0.0517		0.0019		0.2875		0.0100		0.0402		0.0007		272		83		257		8		254	5
22ZKX0202-1-33		222		408		0.54		0.0517		0.0020		0.3153		0.0130		0.0437		0.0008		333		89		278		10		276	5
22ZKX0202-1-34		39		709		0.05		0.0705		0.0021		0.8840		0.0268		0.0905		0.0014		943		66		643		14		558	8
22ZKX0202-1-35		274		448		0.61		0.1347		0.0038		6.2018		0.1746		0.3323		0.0066		2161		50		2005		25		1850	32
22ZKX0202-1-37		146		514		0.28		0.0622		0.0023		0.4342		0.0160		0.0505		0.0008		683		74		366		11		318	5
22ZKX0202-1-38		236		414		0.57		0.1274		0.0035		4.9914		0.1519		0.2828		0.0056		2062		48		1818		26		1605	28
22ZKX0202-1-39		293		826		0.35		0.0529		0.0024		0.2887		0.0122		0.0398		0.0007		324		110		258		10		251	5
22ZKX0202-1-40		314		255		1.23		0.0528		0.0051		0.3050		0.0319		0.0414		0.0011		324		222		270		25		261	7
22ZK1406-5云斜煌岩
22ZK1406-5-1		49		81		0.06		0.0056		0.3542		0.0308		0.0406		0.0010		0.2898		190		308		23		257		6	258
22ZK1406-5-2		133		108		0.05		0.0049		0.3216		0.0274		0.0426		0.0011		0.2991		201		283		21		269		7	273
22ZK1406-5-3		50		86		0.06		0.0051		0.3335		0.0264		0.0389		0.0009		0.2955		170		292		20		246		6	254
22ZK1406-5-4		128		1061		0.05		0.0021		0.2929		0.0120		0.0396		0.0006		0.3936		87		261		9		251		4	282
22ZK1406-5-5		180		302		0.05		0.0027		0.3023		0.0154		0.0412		0.0007		0.3521		115		268		12		260		5	297
22ZK1406-5-6		191		465		0.05		0.0034		0.2937		0.0178		0.0416		0.0008		0.3027		155		261		14		263		5	289
22ZK1406-5-7		70		119		0.08		0.0027		2.1352		0.0704		0.1922		0.0032		0.5113		67		1160		23		1133		18	1149
22ZK1406-5-8		233		628		0.05		0.0019		0.2917		0.0116		0.0431		0.0007		0.4337		97		260		9		272		5	278
22ZK1406-5-9		74		225		0.06		0.0035		0.3195		0.0192		0.0427		0.0009		0.3376		143		282		15		270		5	257
分析点	含量(10^-6)				Th/U		同位素比值												同位素年龄(Ma)
分析点	Th		U		Th/U		²⁰⁷Pb/ ²⁰⁶Pb		1σ		²⁰⁷Pb/ ²³⁵U		1σ		²⁰⁶Pb/ ²³⁸U		1σ		²⁰⁷Pb/ ²⁰⁶Pb		1σ		²⁰⁷Pb/ ²³⁵U		1σ		²⁰⁶Pb/ ²³⁸U		1σ
22ZK1406-5-10		129		188		0.05		0.0032		0.2771		0.0184		0.0412		0.0010		0.3500		144		248		15		260		6	286
22ZK1406-5-12		224		231		0.06		0.0035		0.4443		0.0251		0.0505		0.0012		0.4352		115		373		18		317		8	341
22ZK1406-5-13		22		204		0.07		0.0046		0.4377		0.0328		0.0484		0.0012		0.3250		149		369		23		305		7	603
22ZK1406-5-14		137		168		0.05		0.0042		0.3144		0.0247		0.0414		0.0008		0.2411		172		278		19		261		5	266
22ZK1406-5-15		161		95		0.05		0.0044		0.2747		0.0239		0.0394		0.0008		0.2385		202		246		19		249		5	243
22ZK1406-5-17		81		321		0.05		0.0027		0.3069		0.0156		0.0420		0.0008		0.3864		113		272		12		265		5	285
22ZK1406-5-18		205		99		0.06		0.0057		0.3161		0.0285		0.0403		0.0009		0.2462		215		279		22		255		6	244
22ZK1406-5-19		201		149		0.05		0.0047		0.3121		0.0255		0.0421		0.0008		0.2353		194		276		20		266		5	293
22ZK1406-5-20		401		319		0.05		0.0027		0.2987		0.0158		0.0429		0.0007		0.3287		129		265		12		271		5	278
22ZK1406-5-21		146		339		0.05		0.0027		0.2986		0.0149		0.0418		0.0009		0.4263		112		265		12		264		6	282
22ZK1406-5-22		87		80		0.06		0.0053		0.3470		0.0294		0.0426		0.0010		0.2823		199		302		22		269		6	290
22ZK1406-5-23		187		327		0.10		0.0028		2.1790		0.0690		0.1576		0.0031		0.6308		51		1174		22		943		18	940
22ZK1406-5-24		43		117		0.05		0.0045		0.3145		0.0277		0.0432		0.0012		0.3127		194		278		21		272		7	278
22ZK1406-5-25		129		194		0.05		0.0035		0.2770		0.0181		0.0408		0.0009		0.3193		163		248		14		258		5	240
22ZK1406-5-26		324		310		0.05		0.0028		0.2849		0.0160		0.0405		0.0008		0.3336		123		255		13		256		5	253
22ZK1406-5-27		68		932		0.05		0.0019		0.2802		0.0101		0.0394		0.0005		0.3602		85		251		8		249		3	245
22ZK1406-5-28		111		166		0.05		0.0036		0.2991		0.0213		0.0419		0.0007		0.2285		159		266		17		264		4	281
22ZK1406-5-29		64		132		0.06		0.0042		0.4627		0.0361		0.0506		0.0020		0.5105		141		386		25		318		12	338
22ZK1406-5-30		224		233		0.05		0.0033		0.2838		0.0175		0.0390		0.0007		0.2865		139		254		14		247		4	235
22ZK1406-5-32		105		115		0.05		0.0034		0.2827		0.0217		0.0434		0.0010		0.3149		172		253		17		274		6	263
22ZK1406-5-33		144		436		0.05		0.0026		0.3091		0.0154		0.0424		0.0005		0.2512		108		274		12		268		3	283
22ZK1406-5-34		66		415		0.07		0.0023		0.6057		0.0244		0.0631		0.0015		0.5915		67		481		15		394		9	462
22ZK1406-5-35		138		149		0.06		0.0046		0.3418		0.0277		0.0432		0.0008		0.2420		176		299		21		273		5	279
22ZK1406-5-36		356		380		0.05		0.0025		0.2924		0.0137		0.0416		0.0007		0.3515		111		260		11		263		4	245
22ZK1406-5-37		169		217		0.06		0.0071		0.3550		0.0410		0.0411		0.0009		0.1971		246		308		31		260		6	239
22ZK1406-5-38		287		262		0.05		0.0032		0.2670		0.0181		0.0405		0.0009		0.3246		148		240		15		256		6	236
22ZK1406-5-39		200		712		0.06		0.0017		0.4328		0.0188		0.0560		0.0016		0.6729		67		365		13		352		10	386
22ZK1406-5-40		62		217		0.05		0.0033		0.3081		0.0183		0.0426		0.0009		0.3566		136		273		14		269		6	234
20WLT-17蚀变辉长岩
20WLT-17-1		278		701		0.40		0.1224		0.0019		5.2600		0.1400		0.3123		0.0056		1988		28		1861		22		1752	27
20WLT-17-2		251		795		0.32		0.1210		0.0015		6.1010		0.1200		0.3601		0.0044		1969		21		1992		16		1982	21
20WLT-17-3		156		757		0.21		0.1198		0.0018		5.6800		0.1500		0.3414		0.0052		1951		27		1927		22		1893	25
20WLT-17-4		203		818		0.25		0.1197		0.0008		5.4230		0.1100		0.3270		0.0042		1950		11		1887		18		1823	20
20WLT-17-5		85		553		0.15		0.1195		0.0009		5.5460		0.1100		0.3346		0.0036		1947		14		1906		17		1860	18
20WLT-17-6		160		489		0.33		0.1219		0.0013		6.0680		0.1200		0.3611		0.0037		1980		19		1985		17		1987	17
20WLT-17-7		186		593		0.31		0.1205		0.0010		5.7650		0.1200		0.3458		0.0045		1961		15		1939		18		1914	22
20WLT-17-8		326		499		0.65		0.0533		0.0029		0.3460		0.0190		0.0468		0.0010		310		120		301		15		295	6
20WLT-17-10		90		161		0.56		0.0531		0.0029		0.3200		0.0180		0.0440		0.0007		260		120		280		14		278	5
20WLT-17-11		230		1742		0.13		0.1191		0.0013		4.6280		0.1100		0.2812		0.0048		1941		20		1753		20		1597	24
20WLT-17-12		495		1436		0.34		0.1194		0.0010		5.2840		0.1100		0.3214		0.0041		1944		14		1865		17		1796	20
20WLT-17-13		194		763		0.25		0.1193		0.0008		5.5880		0.1000		0.3382		0.0032		1944		12		1913		16		1878	16
20WLT-17-14		263		1031		0.26		0.1197		0.0008		5.6000		0.1200		0.3377		0.0047		1950		12		1914		19		1874	22
20WLT-17-15		231		696		0.33		0.1204		0.0012		5.7800		0.1600		0.3474		0.0064		1961		18		1939		24		1921	31
分析点	含量(10^-6)				Th/U		同位素比值												同位素年龄(Ma)
分析点	Th		U		Th/U		²⁰⁷Pb/ ²⁰⁶Pb		1σ		²⁰⁷Pb/ ²³⁵U		1σ		²⁰⁶Pb/ ²³⁸U		1σ		²⁰⁷Pb/ ²⁰⁶Pb		1σ		²⁰⁷Pb/ ²³⁵U		1σ		²⁰⁶Pb/ ²³⁸U		1σ
20WLT-17-16	264		1087		0.24		0.1164		0.0009		4.7890		0.1100		0.2970		0.0052		1899		14		1780		19		1675		26
20WLT-17-17	185		835		0.22		0.1170		0.0014		5.2770		0.1100		0.3226		0.0040		1909		21		1864		18		1802		19
20WLT-17-19	120		403		0.30		0.1184		0.0013		5.6900		0.1200		0.3483		0.0046		1929		19		1928		18		1926		22
20WLT-17-20	351		1020		0.34		0.1179		0.0013		5.7190		0.1200		0.3498		0.0046		1922		20		1936		20		1933		22
20WLT-17-21	205		604		0.34		0.1199		0.0013		5.8250		0.1200		0.3534		0.0042		1951		20		1949		17		1951		20
20WLT-17-23	610		1353		0.45		0.1192		0.0009		5.0830		0.1200		0.3071		0.0051		1941		14		1831		20		1725		25
20WLT-17-24	104		240		0.43		0.1187		0.0018		5.7700		0.1300		0.3492		0.0042		1931		27		1943		18		1933		19
20WLT-17-25	86		325		0.26		0.1207		0.0019		5.6720		0.1300		0.3413		0.0040		1961		28		1926		20		1895		20
20WLT-17-26	196		570		0.34		0.1201		0.0012		5.7650		0.1100		0.3497		0.0041		1954		18		1941		17		1933		20
20WLT-17-27	242		1218		0.20		0.1176		0.0008		4.8150		0.0990		0.2963		0.0036		1920		12		1786		17		1672		18
20WLT-17-29	127		272		0.47		0.0506		0.0019		0.3160		0.0130		0.0451		0.0006		185		77		277		10		285		4
20WLT-17-30	84		216		0.39		0.1192		0.0015		5.8170		0.1300		0.3530		0.0043		1938		23		1947		19		1951		21
20WLT-17-31	227		902		0.25		0.1175		0.0017		5.7800		0.1400		0.3528		0.0058		1915		26		1942		21		1947		27
21WLT-7辉长岩
21WLT-7-001	277		84		0.30		0.1168		0.0024		5.7216		0.1256		0.3556		0.0076		1907		37		1935		19		1961		36
21WLT-7-002	249		118		0.47		0.0544		0.0018		0.4666		0.0155		0.0623		0.0014		387		72		389		11		389		8
21WLT-7-003	166		94		0.56		0.0564		0.0017		0.4729		0.0147		0.0608		0.0013		469		67		393		10		381		8
21WLT-7-004	229		111		0.48		0.1154		0.0025		5.3910		0.1200		0.3390		0.0072		1886		38		1883		19		1882		35
21WLT-7-005	451		181		0.40		0.1216		0.0025		4.7382		0.1028		0.2829		0.0060		1979		36		1774		18		1606		30
21WLT-7-006	194		205		1.06		0.0640		0.0016		1.1136		0.0280		0.1264		0.0027		740		51		760		13		767		16
21WLT-7-007	248		144		0.58		0.1182		0.0025		5.6894		0.1247		0.3494		0.0074		1929		37		1930		19		1932		35
21WLT-7-008	191		61		0.32		0.1179		0.0025		5.6452		0.1257		0.3474		0.0074		1925		38		1923		19		1922		35
21WLT-7-009	140		69		0.50		0.1784		0.0037		12.4786		0.2732		0.5076		0.0108		2638		34		2641		21		2646		46
21WLT-7-010	330		203		0.61		0.1169		0.0024		5.5847		0.1217		0.3466		0.0074		1909		37		1914		19		1919		35
21WLT-7-011	284		117		0.41		0.1169		0.0024		5.4876		0.1200		0.3406		0.0072		1909		37		1899		19		1890		35
21WLT-7-012	303		118		0.39		0.1157		0.0024		5.5617		0.1223		0.3487		0.0074		1892		37		1910		19		1928		35
21WLT-7-013	501		176		0.35		0.1161		0.0024		5.5018		0.1193		0.3439		0.0073		1897		37		1901		19		1906		35
21WLT-7-015	249		226		0.91		0.0500		0.0016		0.2939		0.0093		0.0427		0.0009		193		71		262		7		269		6
21WLT-7-016	164		106		0.65		0.0517		0.0019		0.3064		0.0111		0.0430		0.0010		273		81		271		9		271		6
21WLT-7-017	401		147		0.37		0.1174		0.0024		5.5790		0.1212		0.3449		0.0073		1917		37		1913		19		1910		35
21WLT-7-018	796		38		0.05		0.1161		0.0024		5.3712		0.1159		0.3358		0.0071		1896		36		1880		18		1867		34
21WLT-7-019	402		272		0.68		0.1173		0.0024		5.3953		0.1173		0.3338		0.0071		1915		37		1884		19		1857		34
21WLT-7-020	202		94		0.47		0.1164		0.0025		5.5202		0.1238		0.3442		0.0073		1901		38		1904		19		1907		35
21WLT-7-021	376		70		0.19		0.1229		0.0025		5.9742		0.1297		0.3526		0.0075		1999		36		1972		19		1947		36
21WLT-7-022	279		184		0.66		0.0515		0.0020		0.3008		0.0114		0.0424		0.0009		264		84		267		9		268		6
21WLT-7-023	353		304		0.86		0.0563		0.0014		0.5471		0.0141		0.0705		0.0015		465		55		443		9		439		9
21WLT-7-024	474		159		0.34		0.0522		0.0014		0.3170		0.0088		0.0441		0.0010		294		60		280		7		278		6
21WLT-7-025	311		118		0.38		0.1197		0.0025		5.7020		0.1259		0.3457		0.0073		1951		37		1932		19		1914		35
WLT23-09辉长岩
WLT23-09-1	144		351		0.41		0.1194		0.0037		5.8128		0.1725		0.3504		0.0051		1948		55		1948		26		1937		25
WLT23-09-2	133		333		0.40		0.1195		0.0030		5.7353		0.1491		0.3452		0.0045		1948		46		1937		22		1912		21
WLT23-09-3	139		423		0.33		0.1196		0.0035		5.5593		0.1806		0.3343		0.0079		1950		84		1910		28		1859		38
WLT23-09-4	97		293		0.33		0.1202		0.0029		5.7128		0.1408		0.3417		0.0051		1959		75		1933		21		1895		24
分析点	含量(10^-6)				Th/U		同位素比值												同位素年龄(Ma)
分析点	Th		U		Th/U		²⁰⁷Pb/ ²⁰⁶Pb		1σ		²⁰⁷Pb/ ²³⁵U		1σ		²⁰⁶Pb/ ²³⁸U		1σ		²⁰⁷Pb/ ²⁰⁶Pb		1σ		²⁰⁷Pb/ ²³⁵U		1σ		²⁰⁶Pb/ ²³⁸U		1σ
WLT23-09-5	112		602		0.19		0.1185		0.0035		5.4396		0.1620		0.3303		0.0077		1933		53		1891		26		1840		37
WLT23-09-6	185		402		0.46		0.1195		0.0029		5.6673		0.1371		0.3404		0.0048		1950		43		1926		21		1889		23
WLT23-09-7	154		438		0.35		0.1142		0.0035		5.4832		0.1649		0.3446		0.0063		1933		56		1898		26		1909		30
WLT23-09-8	361		345		1.05		0.0515		0.0030		0.2905		0.0167		0.0403		0.0006		265		131		259		13		255		4
WLT23-09-9	209		590		0.35		0.1142		0.0031		5.2227		0.1459		0.3275		0.0053		1933		50		1856		24		1826		26
WLT23-09-10	112		250		0.45		0.1184		0.0036		6.2254		0.1758		0.3773		0.0059		1932		54		2008		25		2064		28
WLT23-09-11	118		489		0.24		0.1195		0.0036		5.4461		0.1737		0.3262		0.0064		1950		54		1892		27		1820		31
WLT23-09-12	137		349		0.39		0.1196		0.0034		5.6688		0.1549		0.3400		0.0054		1950		51		1927		24		1886		26
WLT23-09-13	130		963		0.13		0.1185		0.0030		5.5410		0.1453		0.3349		0.0046		1944		51		1907		23		1862		22
WLT23-09-14	137		312		0.44		0.1178		0.0035		6.0715		0.1932		0.3690		0.0057		1924		53		1986		28		2025		27
WLT23-09-15	112		305		0.37		0.1191		0.0030		5.7088		0.1430		0.3441		0.0044		1944		45		1933		22		1906		21
WLT23-09-16	128		343		0.37		0.1198		0.0033		5.8460		0.1528		0.3513		0.0054		1954		82		1953		23		1941		26
WLT23-09-17	146		399		0.37		0.1196		0.0034		5.8723		0.1907		0.3526		0.0081		1951		84		1957		28		1947		39
WLT23-09-18	284		688		0.41		0.1192		0.0033		6.0965		0.1759		0.3675		0.0059		1946		50		1990		25		2018		28
WLT23-09-19	136		378		0.36		0.1213		0.0036		5.9229		0.1824		0.3513		0.0065		1976		53		1965		27		1941		31
WLT23-09-20	72		403		0.18		0.1199		0.0032		5.6686		0.1619		0.3401		0.0050		1954		80		1927		25		1887		24
WLT23-09-21	550		912		0.60		0.1288		0.0032		6.7627		0.1733		0.3789		0.0053		2081		44		2081		23		2071		25
WLT23-09-22	147		405		0.36		0.1286		0.0034		5.8473		0.1618		0.3280		0.0051		2080		46		1953		24		1829		25
WLT23-09-23	201		411		0.49		0.1230		0.0029		6.1198		0.1490		0.3588		0.0047		2067		42		1993		21		1976		22
WLT23-09-25	164		351		0.47		0.1244		0.0029		6.1679		0.1475		0.3579		0.0045		2021		36		2000		21		1972		21
WLT23-09-26	173		723		0.24		0.1249		0.0028		5.9392		0.1433		0.3437		0.0052		2028		45		1967		21		1904		25
WLT23-09-27	134		323		0.41		0.1208		0.0028		5.7128		0.1409		0.3418		0.0045		1969		41		1933		21		1895		22
WLT23-09-28	984		899		1.09		0.0518		0.0037		0.2887		0.0195		0.0406		0.0009		276		165		258		15		257		6
WLT23-09-29	132		463		0.29		0.1213		0.0028		5.7092		0.1425		0.3403		0.0044		1976		42		1933		22		1888		21
WLT23-09-30	116		433		0.27		0.1240		0.0032		6.1539		0.1659		0.3589		0.0047		2014		45		1998		24		1977		22
WLT23-09-31	117		390		0.30		0.1194		0.0031		6.0512		0.1637		0.3667		0.0050		1947		45		1983		24		2014		24
WLT23-09-32	169		522		0.32		0.1301		0.0032		6.2430		0.1722		0.3467		0.0050		2098		44		2010		24		1919		24
WLT23-09-33	80		257		0.31		0.1245		0.0030		6.3903		0.1594		0.3709		0.0046		2022		38		2031		22		2034		22
WLT23-09-34	113		303		0.37		0.1220		0.0028		5.9249		0.1359		0.3514		0.0046		1987		39		1965		20		1941		22
WLT23-09-35	160		655		0.24		0.1207		0.0026		5.7534		0.1347		0.3444		0.0050		1969		39		1939		20		1908		24
WLT23-09-36	93		230		0.40		0.1198		0.0028		6.0544		0.1480		0.3650		0.0050		1953		36		1984		21		2006		24
WLT23-09-37	204		651		0.31		0.1189		0.0026		5.7801		0.1255		0.3514		0.0046		1940		44		1943		19		1941		22
WLT23-09-38	209		857		0.24		0.1208		0.0026		5.5727		0.1256		0.3334		0.0048		1969		39		1912		19		1855		23
WLT23-09-39	174		648		0.27		0.1201		0.0028		5.7071		0.1356		0.3428		0.0046		1958		41		1932		21		1900		22
WLT23-09-40	152		426		0.36		0.1165		0.0029		5.5328		0.1450		0.3426		0.0049		1903		45		1906		23		1899		23

Table 2 Analytical results of whole-rock major (%) and trace element (10-6) of gabbro and lamprophyre in Wulantaolegai mining area

样号	岩性		SiO₂		TiO₂		Al₂O₃		Fe₂O₃T		MnO		MgO		CaO		Na₂O		K₂O		P₂O₅		烧失量		总量		FeO^T
20WLT-15	煌斑岩		49.1		1.89		14.0		8.47		0.12		4.78		6.38		2.06		4.88		1.36		6.23		99.3		8.19
22ZK1406-5	煌斑岩		48.8		1.77		13.8		8.26		0.12		5.76		7.22		2.70		5.21		1.34		4.77		99.8		7.82
22ZKX0202-1	煌斑岩		47.7		1.72		13.3		8.01		0.10		5.05		8.17		2.32		4.47		1.32		7.01		99.1		7.82
22ZK0205-1	煌斑岩		52.2		1.48		14.2		5.90		0.10		3.45		5.58		1.93		7.69		0.91		6.44		99.8		5.69
22ZK0606-1	煌斑岩		49.8		1.46		14.3		5.54		0.08		5.27		4.76		0.41		9.43		1.17		7.06		99.4		8.25
20WLT-2	辉长岩		47.6		0.93		10.8		19.6		0.18		11.7		4.59		0.19		0.75		0.09		2.75		99.2		18.3
20WLT-3	辉长岩		49.8		1.16		13.1		11.9		0.16		9.21		9.60		0.94		1.56		0.14		2.08		99.6		11.0
WLT23-05-02	辉长岩		49.3		0.99		11.3		12.3		0.16		12.1		7.97		0.77		2.23		0.12		2.24		99.5		11.4
WLT23-05-5	辉长岩		47.4		0.86		10.7		13.8		0.14		10.6		6.08		0.95		1.43		0.09		7.42		99.5		13.5
WLT23-05-8	辉长岩		47.2		1.13		9.88		15.1		0.13		10.6		6.41		1.34		0.93		0.09		6.51		99.2		14.6
WLT23-05-11	辉长岩		49.3		1.01		11.2		11.9		0.15		11.8		8.88		0.82		1.97		0.12		2.02		99.2		11.0
WLT23-07-2	辉长岩		45.5		0.75		8.64		16.2		0.15		16.5		6.71		1.02		0.63		0.08		3.65		99.8		15.2
样号	岩性		Mg^#		m/f		Na₂O+ K₂O		K₂O/ Na₂O		K/Al		K/ (K+Na)		Li		Be		Sc		V		Cr		Co		Ni
20WLT-15	煌斑岩		0.53		1.10		7.46		2.37		0.55		0.73		16.6		3.06		20.7		194		149		29.2		84.1
22ZK1406-5	煌斑岩		0.58		361		8.33		1.93		0.59		0.68		13.7		3.25		19.7		179		147		40.5		75.0
22ZKX0202-1	煌斑岩		0.56		402		7.37		1.93		0.53		0.68		17.6		2.79		19.5		178		142		33.3		71.1
22ZK0205-1	煌斑岩		0.54		1.14		10.30		3.98		0.85		0.82		15.8		4.44		11.4		118		32.7		31.5		26.8
22ZK0606-1	煌斑岩		0.66		1.90		9.05		23.0		1.03		0.96		28.2		4.70		15.8		149		254		33.6		68.5
20WLT-2	辉长岩		0.54		1.19		0.97		3.95		0.11		0.82		24.9		0.60		28.6		289		770		288		3910
20WLT-3	辉长岩		0.60		1.52		2.56		1.66		0.19		0.65		15.3		0.84		28.2		302		452		101		1463
WLT23-05-02	辉长岩		0.66		1.93		3.08		2.90		0.31		0.76		20.1		0.76		21.3		256		1200		96.5		1464
WLT23-05-5	辉长岩		0.60		1.50		2.59		1.51		0.21		0.63		11.4		0.59		20.3		250		1196		52.7		982
WLT23-05-8	辉长岩		0.58		371		2.45		0.69		0.15		0.44		8.90		0.81		20.7		256		1277		52.8		974
WLT23-05-11	辉长岩		0.66		368		2.87		2.40		0.28		0.73		18.6		0.83		27.9		252		1116		90.6		328
WLT23-07-2	辉长岩		0.67		380		1.72		0.62		0.11		0.41		16.6		0.93		26.3		222		1736		222		4718
样号	岩性		Cu		Zn		Ga		Rb		Sr		Y		Zr		Nb		Cs		Ba		La		Ce		Pr
20WLT-15	煌斑岩		26.4		141		24.1		134		710		27.0		524		20.6		0.73		3827		100		226		28.3
22ZK1406-5	煌斑岩		32.4		128		23.5		171		779		26.6		225		19.2		1.00		1740		97.9		223		27.6
22ZKX0202-1	煌斑岩		27.7		107		24.3		147		594		26.5		225		19.2		1.72		1590		99.9		225		28.1
22ZK0205-1	煌斑岩		23.3		103		27.2		187		1667		27.5		285		18.8		1.52		2021		167		163		42.5
22ZK0606-1	煌斑岩		30.4		91.7		20.6		273		310		17.1		228		21.7		1.58		865		48.3		98.1		11.5
20WLT-2	辉长岩		3610		140		16.3		40.5		172		14.4		77.9		5.73		2.07		145		10.7		23.7		3.05
20WLT-3	辉长岩		2351		145		20.6		61.6		252		19.3		126		8.91		1.07		532		18.9		41.1		5.05
WLT23-05-02	辉长岩		827		98.8		17.6		85.7		219		19.0		102		7.48		0.43		975		13.6		29.5		3.71
WLT23-05-5	辉长岩		712		82.6		16.5		57.3		283		15.2		82.2		6.06		0.66		512		8.61		21.6		2.81
WLT23-05-8	辉长岩		873		83.3		17.4		45.5		275		18.3		107		7.68		0.52		297		13.5		28.9		3.57
WLT23-05-11	辉长岩		110		99.3		17.5		77.8		281		20.0		105		7.37		0.63		736		14.5		31.7		3.88
WLT23-07-2	辉长岩		3208		184		13.7		33.1		133		13.7		70.8		4.86		1.20		85.9		10.84		23.2		2.73
样号	岩性		Nd		Sm		Eu		Gd		Tb		Dy		Ho		Er		Tm		Yb		Lu		Hf		Ta
20WLT-15	煌斑岩		114		19.8		6.24		16.1		1.58		6.35		1.05		2.83		0.35		2.01		0.29		12.8		0.87
22ZK1406-5	煌斑岩		112		18.3		5.57		15.9		1.56		6.06		0.99		2.74		0.30		1.96		0.27		12.2		1.04
22ZKX0202-1	煌斑岩		113		18.3		5.50		15.9		1.56		6.12		1.00		2.83		0.31		1.96		0.27		12.6		0.97
22ZK0205-1	煌斑岩		162		24.1		7.26		21.1		1.85		6.55		1.00		2.83		0.29		1.82		0.25		16.0		1.32
22ZK0606-1	煌斑岩		44.7		7.63		2.51		7.21		0.82		3.65		0.64		1.79		0.22		1.39		0.19		12.7		1.06
样号	岩性		Nd		Sm		Eu		Gd		Tb		Dy		Ho		Er		Tm		Yb		Lu		Hf		Ta
20WLT-2	辉长岩		12.5		3.14		1.06		3.35		0.51		2.97		0.59		1.63		0.22		1.40		0.21		2.20		0.41
20WLT-3	辉长岩		20.7		4.74		1.52		5.07		0.71		3.95		0.80		2.20		0.29		1.95		0.28		3.41		0.53
WLT23-05-02	辉长岩		15.6		3.62		1.27		3.90		0.59		3.42		0.66		1.75		0.25		1.62		0.23		2.50		0.83
WLT23-05-5	辉长岩		12.2		2.95		0.96		3.11		0.49		2.83		0.54		1.43		0.21		1.32		0.19		2.06		0.53
WLT23-05-8	辉长岩		15.3		3.60		1.06		3.80		0.59		3.38		0.65		1.73		0.25		1.59		0.23		2.69		0.63
WLT23-05-11	辉长岩		16.2		3.72		1.23		4.02		0.61		3.49		0.68		1.83		0.26		1.68		0.24		2.64		0.85
WLT23-07-2	辉长岩		11.2		2.53		0.94		2.75		0.42		2.41		0.47		1.24		0.18		1.18		0.18		1.81		0.60
样号	岩性	Pb		Bi		Th		U		ΣREE		LREE		HREE		LREE/ HREE		δEu		δCe		(La/Sm)_N		(La/Yb)_N		(Gd/Lu)_N
20WLT-15	煌斑岩	32.7		0.08		7.11		2.07		525		494		30.5		16.2		1.04		1.02		3.28		36.0		6.85
22ZK1406-5	煌斑岩	35.1		0.12		7.89		1.92		514		484		29.8		16.3		0.97		1.04		3.45		35.7		7.36
22ZKX0202-1	煌斑岩	23.4		0.10		7.91		1.97		520		490		29.9		16.4		0.96		1.03		3.52		36.6		7.38
22ZK0205-1	煌斑岩	55.0		0.34		16.57		4.49		601		566		35.7		15.8		0.96		0.46		4.45		65.5		10.48
22ZK0606-1	煌斑岩	17.4		0.07		6.84		1.91		229		213		15.9		13.4		1.02		0.99		4.09		24.9		4.65
20WLT-2	辉长岩	23.0		4.55		2.45		0.48		65.1		54.2		10.9		4.99		1.00		1.00		2.20		5.49		1.96
20WLT-3	辉长岩	12.1		1.36		3.92		0.76		107		92.0		15.3		6.03		0.94		1.01		2.58		6.96		2.25
WLT23-05-02	辉长岩	11.4		0.13		2.85		0.78		79.7		67.3		12.4		5.41		1.02		1.00		2.42		5.99		2.06
WLT23-05-5	辉长岩	11.4		1.57		2.11		0.40		59.3		49.2		10.1		4.87		0.96		1.07		1.88		4.68		2.06
WLT23-05-8	辉长岩	14.2		1.40		2.80		0.64		78.2		66.0		12.2		5.40		0.87		1.00		2.43		6.11		2.08
WLT23-05-11	辉长岩	14.1		0.13		3.42		0.61		84.0		71.2		12.8		5.56		0.96		1.01		2.51		6.21		2.05
WLT23-07-2	辉长岩	12.0		4.61		2.35		0.52		60.2		51.4		8.82		5.83		1.08		1.02		2.76		6.59		1.94

Table 2 Analytical results of whole-rock major (%) and trace element (10-6) of gabbro and lamprophyre in Wulantaolegai mining area

样号	岩性		SiO₂		TiO₂		Al₂O₃		Fe₂O₃T		MnO		MgO		CaO		Na₂O		K₂O		P₂O₅		烧失量		总量		FeO^T
20WLT-15	煌斑岩		49.1		1.89		14.0		8.47		0.12		4.78		6.38		2.06		4.88		1.36		6.23		99.3		8.19
22ZK1406-5	煌斑岩		48.8		1.77		13.8		8.26		0.12		5.76		7.22		2.70		5.21		1.34		4.77		99.8		7.82
22ZKX0202-1	煌斑岩		47.7		1.72		13.3		8.01		0.10		5.05		8.17		2.32		4.47		1.32		7.01		99.1		7.82
22ZK0205-1	煌斑岩		52.2		1.48		14.2		5.90		0.10		3.45		5.58		1.93		7.69		0.91		6.44		99.8		5.69
22ZK0606-1	煌斑岩		49.8		1.46		14.3		5.54		0.08		5.27		4.76		0.41		9.43		1.17		7.06		99.4		8.25
20WLT-2	辉长岩		47.6		0.93		10.8		19.6		0.18		11.7		4.59		0.19		0.75		0.09		2.75		99.2		18.3
20WLT-3	辉长岩		49.8		1.16		13.1		11.9		0.16		9.21		9.60		0.94		1.56		0.14		2.08		99.6		11.0
WLT23-05-02	辉长岩		49.3		0.99		11.3		12.3		0.16		12.1		7.97		0.77		2.23		0.12		2.24		99.5		11.4
WLT23-05-5	辉长岩		47.4		0.86		10.7		13.8		0.14		10.6		6.08		0.95		1.43		0.09		7.42		99.5		13.5
WLT23-05-8	辉长岩		47.2		1.13		9.88		15.1		0.13		10.6		6.41		1.34		0.93		0.09		6.51		99.2		14.6
WLT23-05-11	辉长岩		49.3		1.01		11.2		11.9		0.15		11.8		8.88		0.82		1.97		0.12		2.02		99.2		11.0
WLT23-07-2	辉长岩		45.5		0.75		8.64		16.2		0.15		16.5		6.71		1.02		0.63		0.08		3.65		99.8		15.2
样号	岩性		Mg^#		m/f		Na₂O+ K₂O		K₂O/ Na₂O		K/Al		K/ (K+Na)		Li		Be		Sc		V		Cr		Co		Ni
20WLT-15	煌斑岩		0.53		1.10		7.46		2.37		0.55		0.73		16.6		3.06		20.7		194		149		29.2		84.1
22ZK1406-5	煌斑岩		0.58		361		8.33		1.93		0.59		0.68		13.7		3.25		19.7		179		147		40.5		75.0
22ZKX0202-1	煌斑岩		0.56		402		7.37		1.93		0.53		0.68		17.6		2.79		19.5		178		142		33.3		71.1
22ZK0205-1	煌斑岩		0.54		1.14		10.30		3.98		0.85		0.82		15.8		4.44		11.4		118		32.7		31.5		26.8
22ZK0606-1	煌斑岩		0.66		1.90		9.05		23.0		1.03		0.96		28.2		4.70		15.8		149		254		33.6		68.5
20WLT-2	辉长岩		0.54		1.19		0.97		3.95		0.11		0.82		24.9		0.60		28.6		289		770		288		3910
20WLT-3	辉长岩		0.60		1.52		2.56		1.66		0.19		0.65		15.3		0.84		28.2		302		452		101		1463
WLT23-05-02	辉长岩		0.66		1.93		3.08		2.90		0.31		0.76		20.1		0.76		21.3		256		1200		96.5		1464
WLT23-05-5	辉长岩		0.60		1.50		2.59		1.51		0.21		0.63		11.4		0.59		20.3		250		1196		52.7		982
WLT23-05-8	辉长岩		0.58		371		2.45		0.69		0.15		0.44		8.90		0.81		20.7		256		1277		52.8		974
WLT23-05-11	辉长岩		0.66		368		2.87		2.40		0.28		0.73		18.6		0.83		27.9		252		1116		90.6		328
WLT23-07-2	辉长岩		0.67		380		1.72		0.62		0.11		0.41		16.6		0.93		26.3		222		1736		222		4718
样号	岩性		Cu		Zn		Ga		Rb		Sr		Y		Zr		Nb		Cs		Ba		La		Ce		Pr
20WLT-15	煌斑岩		26.4		141		24.1		134		710		27.0		524		20.6		0.73		3827		100		226		28.3
22ZK1406-5	煌斑岩		32.4		128		23.5		171		779		26.6		225		19.2		1.00		1740		97.9		223		27.6
22ZKX0202-1	煌斑岩		27.7		107		24.3		147		594		26.5		225		19.2		1.72		1590		99.9		225		28.1
22ZK0205-1	煌斑岩		23.3		103		27.2		187		1667		27.5		285		18.8		1.52		2021		167		163		42.5
22ZK0606-1	煌斑岩		30.4		91.7		20.6		273		310		17.1		228		21.7		1.58		865		48.3		98.1		11.5
20WLT-2	辉长岩		3610		140		16.3		40.5		172		14.4		77.9		5.73		2.07		145		10.7		23.7		3.05
20WLT-3	辉长岩		2351		145		20.6		61.6		252		19.3		126		8.91		1.07		532		18.9		41.1		5.05
WLT23-05-02	辉长岩		827		98.8		17.6		85.7		219		19.0		102		7.48		0.43		975		13.6		29.5		3.71
WLT23-05-5	辉长岩		712		82.6		16.5		57.3		283		15.2		82.2		6.06		0.66		512		8.61		21.6		2.81
WLT23-05-8	辉长岩		873		83.3		17.4		45.5		275		18.3		107		7.68		0.52		297		13.5		28.9		3.57
WLT23-05-11	辉长岩		110		99.3		17.5		77.8		281		20.0		105		7.37		0.63		736		14.5		31.7		3.88
WLT23-07-2	辉长岩		3208		184		13.7		33.1		133		13.7		70.8		4.86		1.20		85.9		10.84		23.2		2.73
样号	岩性		Nd		Sm		Eu		Gd		Tb		Dy		Ho		Er		Tm		Yb		Lu		Hf		Ta
20WLT-15	煌斑岩		114		19.8		6.24		16.1		1.58		6.35		1.05		2.83		0.35		2.01		0.29		12.8		0.87
22ZK1406-5	煌斑岩		112		18.3		5.57		15.9		1.56		6.06		0.99		2.74		0.30		1.96		0.27		12.2		1.04
22ZKX0202-1	煌斑岩		113		18.3		5.50		15.9		1.56		6.12		1.00		2.83		0.31		1.96		0.27		12.6		0.97
22ZK0205-1	煌斑岩		162		24.1		7.26		21.1		1.85		6.55		1.00		2.83		0.29		1.82		0.25		16.0		1.32
22ZK0606-1	煌斑岩		44.7		7.63		2.51		7.21		0.82		3.65		0.64		1.79		0.22		1.39		0.19		12.7		1.06
样号	岩性		Nd		Sm		Eu		Gd		Tb		Dy		Ho		Er		Tm		Yb		Lu		Hf		Ta
20WLT-2	辉长岩		12.5		3.14		1.06		3.35		0.51		2.97		0.59		1.63		0.22		1.40		0.21		2.20		0.41
20WLT-3	辉长岩		20.7		4.74		1.52		5.07		0.71		3.95		0.80		2.20		0.29		1.95		0.28		3.41		0.53
WLT23-05-02	辉长岩		15.6		3.62		1.27		3.90		0.59		3.42		0.66		1.75		0.25		1.62		0.23		2.50		0.83
WLT23-05-5	辉长岩		12.2		2.95		0.96		3.11		0.49		2.83		0.54		1.43		0.21		1.32		0.19		2.06		0.53
WLT23-05-8	辉长岩		15.3		3.60		1.06		3.80		0.59		3.38		0.65		1.73		0.25		1.59		0.23		2.69		0.63
WLT23-05-11	辉长岩		16.2		3.72		1.23		4.02		0.61		3.49		0.68		1.83		0.26		1.68		0.24		2.64		0.85
WLT23-07-2	辉长岩		11.2		2.53		0.94		2.75		0.42		2.41		0.47		1.24		0.18		1.18		0.18		1.81		0.60
样号	岩性	Pb		Bi		Th		U		ΣREE		LREE		HREE		LREE/ HREE		δEu		δCe		(La/Sm)_N		(La/Yb)_N		(Gd/Lu)_N
20WLT-15	煌斑岩	32.7		0.08		7.11		2.07		525		494		30.5		16.2		1.04		1.02		3.28		36.0		6.85
22ZK1406-5	煌斑岩	35.1		0.12		7.89		1.92		514		484		29.8		16.3		0.97		1.04		3.45		35.7		7.36
22ZKX0202-1	煌斑岩	23.4		0.10		7.91		1.97		520		490		29.9		16.4		0.96		1.03		3.52		36.6		7.38
22ZK0205-1	煌斑岩	55.0		0.34		16.57		4.49		601		566		35.7		15.8		0.96		0.46		4.45		65.5		10.48
22ZK0606-1	煌斑岩	17.4		0.07		6.84		1.91		229		213		15.9		13.4		1.02		0.99		4.09		24.9		4.65
20WLT-2	辉长岩	23.0		4.55		2.45		0.48		65.1		54.2		10.9		4.99		1.00		1.00		2.20		5.49		1.96
20WLT-3	辉长岩	12.1		1.36		3.92		0.76		107		92.0		15.3		6.03		0.94		1.01		2.58		6.96		2.25
WLT23-05-02	辉长岩	11.4		0.13		2.85		0.78		79.7		67.3		12.4		5.41		1.02		1.00		2.42		5.99		2.06
WLT23-05-5	辉长岩	11.4		1.57		2.11		0.40		59.3		49.2		10.1		4.87		0.96		1.07		1.88		4.68		2.06
WLT23-05-8	辉长岩	14.2		1.40		2.80		0.64		78.2		66.0		12.2		5.40		0.87		1.00		2.43		6.11		2.08
WLT23-05-11	辉长岩	14.1		0.13		3.42		0.61		84.0		71.2		12.8		5.56		0.96		1.01		2.51		6.21		2.05
WLT23-07-2	辉长岩	12.0		4.61		2.35		0.52		60.2		51.4		8.82		5.83		1.08		1.02		2.76		6.59		1.94

Fig.6 SiO2 vs.(Na2O+K2O) diagram of gabbro and lamprophyre (a) and K/Al vs.K/(K+Na) diagram of lamprophyre (b) ((a) after Rock[35]and Maitre[36]; (b) after Lu et al.[37])

Fig.7 Chondrite-normalized REE distribution patterns and primitive mantle-normalized trace element spidegrams of gabbro and lamprophyre in the Wulantaolegai mining area (chondrite normalization values after Boynton et al.[38]; primitive mantle normalization values after McDonough et al.[39])

Table 3 Rb-Sr and Sm-Nd isotopic compositions of gabbro in the Wulantaolegai mining area

样品号	Rb (10^-6)	Sr (10^-6)	⁸⁷Rb/ ⁸⁶Sr	(⁸⁷Sr/⁸⁶Sr)±2σ	t (Ma)	Sm (10^-6)	Nd (10^-6)	¹⁴⁷Sm/ ¹⁴⁴Nd	¹⁴³Nd/ ¹⁴⁴Nd	(¹⁴³Nd/ ¹⁴⁴Nd)_i	ε_Nd(t)	T_DM(Ga)	ε_Sr(t)
21WLT-19	39.61	216.49	0.5293	0.72228±0.000006	268.7	3.47	14.59	0.1440	0.512045	0.511792	-9.76	2.40	228.1868
21WLT-20	34.17	246.18	0.4015	0.721646±0.000006	268.7	3.84	16.79	0.1383	0.512046	0.511803	-9.55	2.22	226.1189
20WLT-2	40.50	171.84	0.6819	0.722542±0.000006	268.7	3.14	12.52	0.1518	0.512021	0.511754	-10.50	2.77	223.6227
20WLT-3	61.62	252.25	0.7067	0.726611±0.000006	268.7	4.74	20.67	0.1386	0.511912	0.511668	-12.18	2.50	280.0577

Fig.8 (87Sr/86Sr)i vs.εNd(t) diagram of gabbro in the Wulantaolegai mining area (data of Kebu and Ebutu gabbro after Jiao et al.[4-5]; data of end-member mantle after Rollinson et al.[40])

Table 4 Hf isotopic compositions of lamprophyre in the Wulantaolegai mining area

分析点	年龄(Ma)	¹⁷⁶Yb/¹⁷⁷Hf	¹⁷⁶Lu/¹⁷⁷Hf	¹⁷⁶Hf/¹⁷⁷Hf	2σ	ε_Hf(0)	ε_Hf(t)	$t D M 1$ (Ma)	f_Lu/Hf
22ZK0202-1-02	251	0.014102	0.000482	0.282485	0.000012	-10.1	-4.7	1018	-0.99
22ZK0202-1-21	254	0.035609	0.001283	0.282538	0.000012	-8.2	-2.9	966	-0.96
22ZK0202-1-28	250	0.020461	0.000802	0.282307	0.000012	-16.4	-11.1	1266	-0.98
22ZK0205-1-22	251	0.002476	0.000078	0.282292	0.000020	-16.9	-11.5	1263	-1.00
22ZK0205-1-26	253	0.020461	0.000744	0.282328	0.000018	-15.6	-10.3	1236	-0.98
22ZK0606-1-2	250	0.004176	0.000132	0.282066	0.000010	-24.9	-19.5	1563	-1.00
22ZK0606-1-14	250	0.009218	0.000306	0.282091	0.000009	-24.0	-18.6	1536	-0.99
22ZK0606-1-17	248	0.011710	0.000399	0.282093	0.000010	-24.0	-18.7	1538	-0.99
22ZK0606-1-27	251	0.021058	0.000623	0.282099	0.000012	-23.7	-18.4	1539	-0.98
22ZK0606-1-35	252	0.018046	0.000595	0.282053	0.000010	-25.4	-20.0	1598	-0.98
22ZK1406-5-3	246	0.005068	0.000161	0.282405	0.000010	-12.9	-7.6	1116	-1.00
22ZK1406-5-18	255	0.018064	0.000672	0.282157	0.000009	-21.7	-16.3	1463	-0.98
22ZK1406-5-26	256	0.021224	0.000779	0.282459	0.000010	-11.0	-5.6	1061	-0.98
22ZK1406-5-30	247	0.028882	0.001046	0.282466	0.000014	-10.8	-5.6	1059	-0.97
22ZK1406-5-37	260	0.026060	0.000968	0.282447	0.000013	-11.4	-5.9	1082	-0.97

Table 4 Hf isotopic compositions of lamprophyre in the Wulantaolegai mining area

分析点	年龄(Ma)	¹⁷⁶Yb/¹⁷⁷Hf	¹⁷⁶Lu/¹⁷⁷Hf	¹⁷⁶Hf/¹⁷⁷Hf	2σ	ε_Hf(0)	ε_Hf(t)	$t D M 1$ (Ma)	f_Lu/Hf
22ZK0202-1-02	251	0.014102	0.000482	0.282485	0.000012	-10.1	-4.7	1018	-0.99
22ZK0202-1-21	254	0.035609	0.001283	0.282538	0.000012	-8.2	-2.9	966	-0.96
22ZK0202-1-28	250	0.020461	0.000802	0.282307	0.000012	-16.4	-11.1	1266	-0.98
22ZK0205-1-22	251	0.002476	0.000078	0.282292	0.000020	-16.9	-11.5	1263	-1.00
22ZK0205-1-26	253	0.020461	0.000744	0.282328	0.000018	-15.6	-10.3	1236	-0.98
22ZK0606-1-2	250	0.004176	0.000132	0.282066	0.000010	-24.9	-19.5	1563	-1.00
22ZK0606-1-14	250	0.009218	0.000306	0.282091	0.000009	-24.0	-18.6	1536	-0.99
22ZK0606-1-17	248	0.011710	0.000399	0.282093	0.000010	-24.0	-18.7	1538	-0.99
22ZK0606-1-27	251	0.021058	0.000623	0.282099	0.000012	-23.7	-18.4	1539	-0.98
22ZK0606-1-35	252	0.018046	0.000595	0.282053	0.000010	-25.4	-20.0	1598	-0.98
22ZK1406-5-3	246	0.005068	0.000161	0.282405	0.000010	-12.9	-7.6	1116	-1.00
22ZK1406-5-18	255	0.018064	0.000672	0.282157	0.000009	-21.7	-16.3	1463	-0.98
22ZK1406-5-26	256	0.021224	0.000779	0.282459	0.000010	-11.0	-5.6	1061	-0.98
22ZK1406-5-30	247	0.028882	0.001046	0.282466	0.000014	-10.8	-5.6	1059	-0.97
22ZK1406-5-37	260	0.026060	0.000968	0.282447	0.000013	-11.4	-5.9	1082	-0.97

Fig.9 εHf(t) vs.age diagrams of lamprophyre in the Wulan-taolegai mining area

Fig.10 Harker diagrams of gabbro and lamprophyre from the Wulantaolegai mining area

Fig.11 Discrimination diagrams of assimilative mixing for gabbro and lamprophyre from the Wulantaolegai mining area((c) after Neal et al.[54], (d) after Zhang et al.[56])

Fig.12 Nb/Zr vs.Th/Zr diagram (a) and La/Ba vs.Th/Yb diagram (b) of gabbro and lamprophyre from the Wulantaolegai mining area (after Woodhead et al.[72])

References 72

[1]	李文渊. 中国岩浆铜镍钴硫化物矿床成矿理论创新和找矿突破[J]. 地质力学学报, 2022, 28(5): 793-820.
[2]	李文渊. 中国铜镍硫化物矿床成矿系列与地球化学[M]. 西安: 西安地图出版社, 1996: 1-228.
[3]	肖序常. 中国新疆地壳结构与地质演化[M]. 北京: 地质出版社, 2010: 1-233.
[4]	焦建刚, 郭天牧, 闫馨云, 等. 内蒙古中部额布图铜镍硫化物矿床形成时代与岩石成因[J]. 地球科学与环境学报, 2023, 45(5): 1063-1079.
[5]	焦建刚, 徐铭池, 周江迪, 等. 内蒙古中部克布铜镍硫化物矿床岩石成因与成矿过程[J]. 岩石学报, 2023, 39(4): 1125-1143.
[6]	党智财, 李俊建, 付超, 等. 内蒙古乌拉特中旗克布镁铁质-超镁铁质岩体年代学、矿物学和岩石地球化学[J]. 地质学报, 2018, 92(2): 278-297.
[7]	李志丹, 朵兴芳, 李效广, 等. 内蒙古达茂旗黄花滩铜镍矿辉长岩LA-ICP-MS锆石U-Pb年龄、地球化学和Hf同位素特征[J]. 地质通报, 2020, 39(4): 491-502.
[8]	贾莎莎. 内蒙古达茂旗乌兰陶勒盖铜镍矿床地质特征及成因探讨[D]. 北京: 中国地质大学(北京), 2019.
[9]	LIU F, GUO J H, PENG P, et al. Zircon U-Pb ages and geochemistry of the Huai’an TTG gneisses terrane: Petrogenesis and implications for 2.5 Ga crustal growth in the North China Craton[J]. Precambrian Research, 2012,212: 225-244.
[10]	CHEN N H C, ZHAO G C, JAHN B M, et al. U-Pb zircon ages and Hf isotopes of 2.5 Ga granitoids from the Yinshan Block,North China Craton: Implications for crustal growth[J]. Precambrian Research, 2017,303: 171-182.
[11]	PENG P, GUO J H, ZHAI M G, et al. Paleoproterozoic gabbronoritic and granitic magmatism in the northern margin of the North China Craton: Evidence of crust-mantle interaction[J]. Precambrian Research, 2010, 183(3): 635-659.
[12]	WANG F, CHEN F K, SIEBEL W, et al. Zircon U-Pb geochronology and Hf isotopic composition of the Hongqiyingzi Complex,northern Hebei Province: New evidence for Paleoproterozoic and Late Paleozoic evolution of the northern margin of the North China Craton[J]. Gondwana Research, 2011, 20(1): 122-136.
[13]	马云飞, 焦建刚, 王猛, 等. 华北克拉通北缘内蒙古达茂旗地区前寒武纪基底岩石组合及形成时代[J]. 地质通报, 2022, 41(4): 559-576.
[14]	ZHAO G C, WILDE S A, CAWOOD P A, et al. Archean blocks and their boundaries in the North China Craton: Lithological,geochemical,structural and P-T path constraints and tectonic evolution[J]. Precambrian Research, 2001, 107(1/2): 45-73.
[15]	吴福元, 徐义刚, 高山, 等. 华北岩石圈减薄与克拉通破坏研究的主要学术争论[J]. 岩石学报, 2008, 24(6): 1145-1174.
[16]	XU Y G, LI H Y, PANG C J, et al. On the timing and duration of the destruction of the North China Craton[J]. Chinese Science Bulletin, 2009, 54(19): 3379-3396.
[17]	ZHANG S H, ZHAO Y, LIU X C, et al. Late Paleozoic to Early Mesozoic mafic-ultramafic complexes from the northern North China Block: Constraints on the composition and evolution of the lithospheric mantle[J]. Lithos, 2009, 110(1/2/3/4): 229-246.
[18]	赵越, 陈斌, 张拴宏, 等. 华北克拉通北缘及邻区前燕山期主要地质事件[J]. 中国地质, 2010, 37(4): 900-915.
[19]	王荃, 刘雪亚, 李锦轶. 中国内蒙古中部的古板块构造[J]. 中国地质科学院院报, 1991, 12(1): 1-15.
[20]	LI J Y. Permian geodynamic setting of Northeast China and adjacent regions: Closure of the Paleo-Asian Ocean and subduction of the Paleo-Pacific Plate[J]. Journal of Asian Earth Sciences, 2006, 26(3/4): 207-224.
[21]	聂凤军, 张万益, 江思宏, 等. 论河北丰宁牛圈银(金)矿床的成矿时限问题[J]. 地学前缘, 2007, 14(5): 167-176.
[22]	曾庆栋, 刘建明, 张作伦, 等. 华北克拉通北缘鸡冠山斑岩钼矿床成矿年代及印支期成矿事件[J]. 岩石学报, 2009, 25(2): 393-398.
[23]	张彤, 陈志勇, 许立权, 等. 内蒙古卓资县大苏计钼矿辉钼矿铼-锇同位素定年及其地质意义[J]. 岩矿测试, 2009, 28(3): 279-282.
[24]	LIU J M, ZHAO Y, SUN Y L, et al. Recognition of the latest Permian to Early Triassic Cu-Mo mineralization on the northern margin of the North China Block and its geological significance[J]. Gondwana Research, 2010, 17(1): 125-134.
[25]	方曙. 内蒙古自治区大地构造图(1∶150万)及其说明书[R]. 呼和浩特: 内蒙古第十地质矿产勘查开发院, 2014.
[26]	LIU Y S, GAO S, HU Z C, et al. Continental and oceanic crust recycling-induced melt-peridotite interactions in the trans-north China Orogen: U-Pb dating,Hf isotopes and trace elements in zircons from mantle xenoliths[J]. Journal of Petrology, 2010, 51(1/2): 537-571.
[27]	LUDWIG K. Isoplot: A Geochronological Toolkit for Microsoft Excel[J]. Berkeley:Berkeley Geochronology Center Special Publication, 2003: 1-70.
[28]	SCHERER E, MUNKER C, MEZGER K. Calibration of the lutetium-hafnium clock[J]. Science, 2001,293:683-687.
[29]	BOUVIER A, VERVOORT J D, PATCHETT P J. The Lu-Hf and Sm-Nd isotopic composition of CHUR: Constraints from unequilibrated chondrites and implications for the bulk composition of terrestrial planets[J]. Earth and Planetary Science Letters, 2008, 273(1/2): 48-57.
[30]	GRIFFIN W L, PEARSON N J, BELOUSOVA E, et al. The Hf isotope composition of cratonic mantle: LAM-MC-ICPMS analysis of zircon megacrysts in kimberlites[J]. Geochimica et Cosmochimica Acta, 2000, 64(1): 133-147.
[31]	ZHANG W, HU Z C, LIU Y S. Iso-Compass: New freeware software for isotopic data reduction of LA-MC-ICP-MS[J]. Journal of Analytical Atomic Spectrometry, 2020, 35(6): 1087-1096.
[32]	THIRLWALL M F. Long-term reproducibility of multicollector Sr and Nd isotope ratio analysis[J]. Chemical Geology, 1991, 94(2): 85-104.
[33]	LI C F, LI X H, LI Q L, et al. Rapid and precise determination of Sr and Nd isotopic ratios in geological samples from the same filament loading by thermal ionization mass spectrometry employing a single-step separation scheme[J]. Analytica Chimica Acta, 2012,727: 54-60.
[34]	CORFU F, HANCHAR J M, HOSKIN P W O, et al. Atlas of zircon texture[J]. Reviews in Mineralogy and Geochemistry, 2003, 53(1): 469-500.
[35]	ROCK N M S. The nature and origin of lamprophyres: An overview[J]. Geological Society,London,Special Publications, 1987, 30(1): 191-226.
[36]	MAITRE R W. Igneous Rocks: A Classification and Glossary of Terms: Recommendations of the International Union of Geological Sciences Sub Commission on the Systematics of Igneous Rocks[M]. Cambridge: Cambridge University Press, 2002,236.
[37]	路凤香, 舒小辛, 赵崇贺. 有关煌斑岩分类的建议[J]. 地质科技情报, 1991, 10(增): 55-62.
[38]	BOYNTON W V. Cosmochemistry of the rare earth elements: Meteorite studies[M]// Rare Earth Element Geochemistry. Amsterdam: Elsevier, 1984: 63-114.
[39]	MCDONOUGH W, SUN S S. The composition of the earth[J]. Chemical Geology, 1995,120: 223-253.
[40]	ROLLINSON H, BLENKINSOP T. The magmatic,metamorphic and tectonic evolution of the Northern Marginal Zone of the Limpopo Belt in Zimbabwe[J]. Journal of the Geological Society, 1995, 152(1): 65-75.
[41]	XIAO W J, WINDLEY B F, HAO J, et al. Accretion leading to collision and the Permian Solonker suture,Inner Mongolia,China: Termination of the Central Asian Orogenic Belt[J]. Tectonics, 2003, 22(6): 1069.
[42]	MIAO L, ZHANG F, FAN W M, et al. Phanerozoic evolution of the Inner Mongolia-Daxinganling orogenic belt in North China: Constraints from geochronology of ophiolites and associated formations[J]. Geological Society,London,Special Publications, 2007, 280(1): 223-237.
[43]	武将伟, 胡浩, 张富臣, 等. 内蒙古集宁地区小大青山花岗岩成因及动力学背景[J/OL]. 现代地质,1-25.
[44]	宋彦博, 王建平, 沈存利, 等. 内蒙古扎拉格阿木铜矿床成矿岩体地质地球化学及其成矿学意义[J]. 现代地质, 2023, 37(6): 1482-1494.
[45]	张国宾, 孔金贵, 王翠彭, 等. 大兴安岭北段呼玛地区晚石炭世花岗岩年代学和地球化学特征:对古亚洲洋构造演化的制约[J/OL]. 现代地质,1-21.
[46]	ZHANG S H, ZHAO Y, SONG B, et al. Contrasting Late Carboniferous and Late Permian-Middle Triassic intrusive suites from the northern margin of the North China Craton: Geochronology,petrogenesis,and tectonic implications[J]. Geological Society of America Bulletin, 2009, 121 (1-2): 181-200
[47]	张旗, 潘国强, 李承东, 等. 花岗岩结晶分离作用问题: 关于花岗岩研究的思考之二[J]. 岩石学报, 2007, 23(6): 1239-1251.
[48]	管涛, 黄智龙, 许成, 等. 云南白马寨镍矿区煌斑岩⁴⁰Ar-³⁹Ar定年和地球化学特征[J]. 岩石学报, 2006, 22(4): 873-883.
[49]	丁清峰. 煌斑岩及其与金矿关系研究的进展[J]. 世界地质, 2001, 20(1): 17-24.
[50]	唐冬梅, 秦克章, 孙赫, 等. 天宇铜镍矿床的岩相学、锆石U-Pb年代学、地球化学特征: 对东疆镁铁-超镁铁质岩体源区和成因的制约[J]. 岩石学报, 2009, 25(4): 817-831.
[51]	邢凤鸣, 徐祥. 安徽沿江地区中生代岩浆岩的基本特点[J]. 岩石学报, 1995, 11(4): 409-422.
[52]	刘一鸣, 李才, 李三忠, 等. 青藏高原羌南-保山板块都古尔地区早白垩世变质辉长岩: 对班公湖-怒江洋俯冲闭合的制约[J]. 地质通报, 2018, 37(8): 1450-1463.
[53]	马承, 宋伊圩, 孙彪, 等. 西秦岭岷礼成矿带地球化学特征及其地质意义[J]. 黄金科学技术, 2021, 29(4): 489-499.
[54]	NEAL C R, MAHONEY J J, CHAZEY W J. Mantle sources and the highly variable role of continental lithosphere in basalt petrogenesis of the Kerguelen Plateau and broken ridge LIP: Results from ODP leg 183[J]. Journal of Petrology, 2002, 43(7): 1177-1205.
[55]	Taylor S R, McLennan S M. The continental crust: its composition and evolution[M]. // Blackwell: Oxford Press, 1985: 1-312.
[56]	ZHANG Z, MAO J, CHAI F, et al. Geochemistry of the Permian kalatongke mafic intrusions,northern Xinjiang,Northwest China: Implications for the genesis of magmatic Ni-Cu sulfide deposits[J]. Economic Geology, 2009, 104(2): 185-203.
[57]	ROLLINSON H R. Using Geochemical Data:Evaluation,Presentation, Interpretation[M]. Hoboken: Taylor and Francis, 2014.
[58]	吴福元, 李献华, 郑永飞, 等. Lu-Hf同位素体系及其岩石学应用[J]. 岩石学报, 2007, 23(2): 185-220.
[59]	郭文琳, 苏文博, 张健, 等. 天津蓟县铁岭组新剖面钾质斑脱岩锆石U-Pb测年及Hf同位素研究[J]. 岩石学报, 2019, 35(8): 2433-2454.
[60]	TARNEY J, JONES C E. Trace element geochemistry of orogenic igneous rocks and crustal growth models[J]. Journal of the Geological Society, 1994, 151(5): 855-868.
[61]	MCKELVEY B A, ORIANS K J. The determination of dissolved zirconium and hafnium from seawater using isotope dilution inductively coupled plasma mass spectrometry[J]. Marine Chemistry, 1998, 60(3/4): 245-255.
[62]	Menzies M A. Mantle ultramafic xenoliths in alkaline magmas: evidence for mantle heterogeneity modified by magmatic activity[J]. Continental basalts and mantle xenoliths, 1983: 92-110.
[63]	孙景贵, 胡受奚, 凌洪飞, 等. 胶西北两类金矿田的高钾-钾质脉岩元素地球化学与成岩作用研究[J]. 地球化学, 2000, 29(2): 143-152.
[64]	MCLENNAN S M, TAYLOR S R. Heat flow and the chemical composition of continental crust[J]. The Journal of Geology, 1996, 104(4): 369-377.
[65]	STOLZ A J, JOCHUM K P, SPETTEL B, et al. Fluid-and melt-related enrichment in the subarc mantle: Evidence from Nb/Ta variations in island-arc basalts[J]. Geology, 1996, 24(7): 587.
[66]	SAUNDERS A D, TARNEY J, WEAVER S D. Transverse geochemical variations across the Antarctic Peninsula: Implications for the genesis of calc-alkaline magmas[J]. Earth and Planetary Science Letters, 1980, 46(3): 344-360.
[67]	舒小辛. 扬子地台西缘钾质煌斑岩岩石化学所反映的古俯冲作用及其与金刚石含矿性的关系[J]. 大地构造与成矿学, 1993, 17(3): 251-258.
[68]	FREY F A, GREEN D H. The mineralogy,geochemistry and origin of Iherzolite inclusions in Victorian basanites[J]. Geochimica et Cosmochimica Acta, 1974, 38(7): 1023-1059.
[69]	ROCK N M S. Lamprophyres[M]. Glasgow:Blackie, 1991:1-285.
[70]	DUPUY C, LIOTARD J M, DOSTAL J. Zr/hf fractionation in intraplate basaltic rocks: Carbonate metasomatism in the mantle source[J]. Geochimica et Cosmochimica Acta, 1992, 56(6): 2417-2423.
[71]	LIANG Y Y, DENG J, LIU X F, et al. Major and trace element,and Sr isotope compositions of clinopyroxene phenocrysts in mafic dykes on Jiaodong Peninsula,southeastern North China Craton: Insights into magma mixing and source metasomatism[J]. Lithos, 2018,302: 480-495.
[72]	WOODHEAD J D, HERGT J M, DAVIDSON J P, et al. Hafnium isotope evidence for ‘conservative’ element mobility during subduction zone processes[J]. Earth and Planetary Science Letters, 2001, 192(3): 331-346.