Origin and Tectonic Significance of the Hongshan Alkaline Volcanic-Intrusive Complex in the Southern Taihang Mountains: Constraints from Zircon U-Pb Geochronology and Geochemistry

doi:10.19657/j.geoscience.1000-8527.2024.137

Abstract

Abstract:

The Hanxing region of the southern Taihang Mountains, located in the central North China Craton, hosts numerous Mesozoic intermediate-mafic intrusive rocks. Among them, the Hongshan alkaline complex exhibits a distinctive lithological composition and serves as a key to understanding the tectonic evolution of the craton during the Early Cretaceous. This study conducted whole rock geochemistry and zircon U-Pb chronology analysis on typical lithology in the Hongshan intrusion and related volcanic rocks, and compared which with the published geochemical data, zircon U-Pb ages, and Lu-Hf isotopes of various intrusions in the Handan-Xingtai region. The genesis and evolution of the Hongshan complex were analyzed. This study shows that the Hongshan alkaline volcanic-intrusive complex consists of high-silica, Al-rich, and high-alkali rocks belonging to the shoshonite series. The La and La/Sm ratios exhibit a positive correlation. Hf isotopic compositions of zircons vary between enriched mantle and ancient lower crust (ε_Hf(t)= —17-—10, T_DM2=1800-2200 Ma), indicative that it is of crust-mantle mixed origin. The zircon U-Pb ages of quartz syenite, quartz syenite porphyry, pyroxene syenite, and trachytic tuff are 129.6±2.9 Ma, 128.6±3.0 Ma, 126.5±0.47 Ma, and 130.6±3.0 Ma, respectively, which are consistent with the magmatic timeframe of other intrusions in the Handan-Xingtai region. Comprehensive research suggests that the Hongshan alkaline complex was formed through the mixing of shoshonitic magma with both crustal- and mantle-derived magmas. The shoshonitic magma originated from the partial melting of pyroxenite residues formed during the early evolution of the craton and retained in the mantle. The mafic magma, on the other hand, was generated by partial melting of an enriched mantle source. This magmatic evolution and rock formation reflect a process of lithospheric thinning and asthenospheric upwelling, which was likely triggered by the rollback of the Paleo-Pacific Plate during the Early Cretaceous, leading to the development of a back-arc extensional setting in regions including Hanxing.

Key words: alkaline complex, magma evolution, fractional crystallization, magma mixing, southern Taihang Mountains region

CLC Number:

ZHANG Lemin, ZHANG Juquan, WU Xiaohe, GUO Ziqi, WEN Yujing, QIN Chao, BAI Fusheng, ZHU Yibing. Origin and Tectonic Significance of the Hongshan Alkaline Volcanic-Intrusive Complex in the Southern Taihang Mountains: Constraints from Zircon U-Pb Geochronology and Geochemistry[J]. Geoscience, 2025, 39(03): 752-773.

Figures/Tables 17

References 113

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点号	元素含量(10^-6)		同位素比值			年龄(Ma)
点号	Th	U	²⁰⁷Pb/²⁰⁶Pb (1σ)	²⁰⁷Pb/²³⁵U (1σ)	²⁰⁶Pb/²³⁸U (1σ)	²⁰⁷Pb/²⁰⁶Pb (1σ)	²⁰⁷Pb/²³⁵U (1σ)	²⁰⁶Pb/²³⁸U (1σ)
ST20-4-2	2520.94	1517.28	0.0495(0.0009)	0.1483(0.0025)	0.0218(0.0003)	172.3(42.6)	140.4(2.2)	138.9(1.9)
ST20-4-3	4770.22	2354.92	0.0495(0.0008)	0.1426(0.0031)	0.0209(0.0004)	172.3(2.8)	135.3(2.7)	133.2(2.4)
ST20-4-4	5087.91	2821.75	0.0497(0.0008)	0.1342(0.0024)	0.0196(0.0003)	189(38.9)	127.9(2.2)	125.1(1.8)
ST20-4-11	2803.82	1821.53	0.0496(0.0008)	0.133(0.002)	0.0195(0.0002)	176(6.5)	126.7(1.8)	124.4(1.3)
ST20-4-12	743.86	412.13	0.0514(0.0022)	0.1445(0.0052)	0.0206(0.0003)	257.5(100)	137(4.6)	131.7(1.9)
ST20-4-16	4640.04	1948.16	0.0497(0.0009)	0.1437(0.0025)	0.0211(0.0004)	189(47.2)	136.3(2.2)	134.6(2.2)
ST20-4-17	4921.51	2370.92	0.0499(0.0007)	0.145(0.0033)	0.0211(0.0004)	190.8(33.3)	137.5(3)	134.5(2.7)
ST20-4-20	3332.63	1935.71	0.0478(0.0008)	0.1286(0.0022)	0.0196(0.0002)	87.1(36.1)	122.9(2)	125(1.6)
ST20-4-22	3288.99	2107.21	0.05(0.0009)	0.138(0.0028)	0.0201(0.0003)	194.5(42.6)	131.3(2.5)	128.1(1.9)
ST20-4-26	3341.68	2067.19	0.0501(0.0011)	0.1394(0.0028)	0.0203(0.0003)	211.2(51.8)	132.5(2.5)	129.6(2.1)
ST20-4-28	2578.08	1697.67	0.0497(0.0009)	0.1458(0.0035)	0.0214(0.0004)	189(40.7)	138.2(3.1)	136.2(2.8)
ST20-4-32	3498.82	1690.55	0.0486(0.0009)	0.1393(0.0033)	0.0208(0.0004)	131.6(42.6)	132.4(2.9)	132.8(2.3)
ST20-4-33	2201.67	1275.61	0.0473(0.0008)	0.1314(0.0029)	0.0202(0.0003)	61.2(40.7)	125.4(2.6)	128.7(1.8)
ST20-5-1	44.66	50.26	0.0546(0.0037)	0.1534(0.0093)	0.0208(0.0004)	398.2(150)	144.9(8.2)	132.7(2.4)
ST20-5-2	79.41	185.01	0.1825(0.0015)	12.3731(0.154)	0.4915(0.0056)	2675.6(13.3)	2633.1(11.8)	2577.3(24.1)
ST20-5-3	250.75	211.6	0.0497(0.0017)	0.1392(0.005)	0.0203(0.0002)	189(77.8)	132.3(4.5)	129.3(1.5)
ST20-5-4	77.69	77.05	0.0472(0.0036)	0.1237(0.0092)	0.0193(0.0003)	61.2(170.3)	118.4(8.4)	123.4(2.1)
ST20-5-7	42.58	76.2	0.0507(0.0035)	0.1408(0.0091)	0.0205(0.0005)	227.8(165.7)	133.8(8.1)	131.1(3)
ST20-5-8	163.27	180.44	0.0518(0.0018)	0.1455(0.005)	0.0204(0.0003)	276(77.8)	137.9(4.5)	130.4(1.7)
ST20-5-9	344.83	370.41	0.0508(0.0015)	0.1433(0.0044)	0.0204(0.0002)	235.3(68.5)	136(3.9)	130.4(1.6)
ST20-5-12	991.25	637.26	0.0504(0.0015)	0.1349(0.004)	0.0195(0.0003)	213(66.7)	128.5(3.6)	124.5(1.6)
ST20-5-13	12.26	102.79	0.1777(0.0019)	11.2809(0.2036)	0.4599(0.007)	2631.8(17.6)	2546.6(16.9)	2439.1(31)
ST20-5-16	253.21	281.49	0.1724(0.0016)	11.1802(0.216)	0.4705(0.0085)	2580.6(16.5)	2538.3(18.1)	2485.9(37.4)
ST17-26-1	157.49	153.38	0.0512(0.0019)	0.1463(0.0054)	0.0208(0.0003)	250.1(91.7)	138.6(4.8)	132.7(1.7)
ST17-26-2	102.33	279.21	0.1619(0.0013)	10.4929(0.1231)	0.4697(0.0051)	2476.2(18.7)	2479.3(11)	2482.4(22.6)
ST17-26-3	113.5	152.66	0.0994(0.0011)	3.8782(0.0553)	0.2832(0.0034)	1613(21)	1609.2(11.6)	1607.6(17.3)
ST17-26-4	498.79	625.08	0.0493(0.0011)	0.1366(0.003)	0.0201(0.0002)	166.8(51.8)	130(2.7)	128.5(1.2)
ST17-26-7	242.2	307.86	0.125(0.0012)	5.9621(0.1261)	0.3448(0.0061)	2029.3(17.1)	1970.3(18.4)	1909.7(29.5)
ST17-26-8	134.8	293.52	0.1691(0.0015)	11.1422(0.1254)	0.4789(0.0056)	2550(15.9)	2535.1(10.6)	2522.6(24.7)
ST17-26-9	1019.4	511.31	0.0529(0.0013)	0.1507(0.0039)	0.0207(0.0002)	324.1(27.8)	142.5(3.4)	132(1.4)
ST17-26-11	567.37	570.37	0.0533(0.0013)	0.1504(0.0036)	0.0205(0.0002)	338.9(55.6)	142.3(3.2)	130.8(1.3)
ST17-26-15	115.27	486.03	0.1657(0.0012)	9.3111(0.1098)	0.4076(0.0041)	2514.5(13.1)	2369.1(10.9)	2203.9(18.8)
ST17-26-19	179.13	296.65	0.1036(0.001)	4.168(0.0668)	0.2918(0.0039)	1700(17.1)	1667.7(13.2)	1650.3(19.7)
HSH-1-1	1376.12	887.24	0.0488(0.0003)	0.1341(0.0012)	0.0199(0.0002)	200.1(13)	127.8(1.1)	127.3(1)
HSH-1-2	360.25	313.43	0.0483(0.0005)	0.1323(0.0014)	0.0199(0.0001)	122.3(50)	126.2(1.3)	127(0.9)
HSH-1-3	968.05	461.73	0.049(0.0004)	0.1333(0.0015)	0.0198(0.0002)	146.4(16.7)	127.1(1.3)	126.1(1.2)
HSH-1-4	4980.35	1191.09	0.0489(0.0002)	0.1341(0.0013)	0.0199(0.0002)	142.7(11.1)	127.8(1.2)	127.2(1.1)
HSH-1-5	64.4	78.18	0.0506(0.0013)	0.1383(0.0035)	0.0199(0.0002)	233.4(57.4)	131.5(3.1)	127.3(1.2)
HSH-1-6	286.94	288.85	0.0485(0.0005)	0.1337(0.0018)	0.02(0.0002)	124.2(24.1)	127.4(1.6)	127.9(1.3)
HSH-1-7	464.57	278.07	0.0491(0.0005)	0.1343(0.0015)	0.0199(0.0002)	150.1(22.2)	127.9(1.3)	127(1)
HSH-1-8	638.56	462.47	0.0496(0.0004)	0.1357(0.0013)	0.0199(0.0002)	176(12)	129.2(1.1)	126.9(1)
HSH-1-9	987.79	730	0.0489(0.0003)	0.1344(0.0012)	0.0199(0.0001)	142.7(17.6)	128.1(1.1)	127.2(0.9)
HSH-1-10	651.83	570.15	0.0486(0.0004)	0.1326(0.0015)	0.0198(0.0002)	131.6(12)	126.5(1.3)	126.3(1.1)
HSH-1-11	371.03	579.23	0.0497(0.0003)	0.1364(0.0013)	0.0199(0.0001)	189(16.7)	129.8(1.2)	127.1(0.9)
HSH-1-12	73.47	121.7	0.0495(0.0012)	0.1343(0.0034)	0.0197(0.0002)	172.3(55.5)	128(3.1)	125.6(1)
HSH-1-13	791.98	535.76	0.0489(0.0005)	0.1321(0.0015)	0.0196(0.0002)	146.4(20.4)	126(1.4)	125(1)
HSH-1-14	183.11	177.51	0.0506(0.0008)	0.1359(0.0022)	0.0195(0.0002)	220.4(35.2)	129.4(2)	124.7(1.2)
HSH-1-15	746.91	400.81	0.0484(0.0005)	0.1305(0.0015)	0.0196(0.0001)	116.8(21.3)	124.5(1.3)	125(0.7)
HSH-1-16	441.67	435.83	0.0501(0.0004)	0.1378(0.0014)	0.02(0.0002)	198.2(13.9)	131.1(1.2)	127.7(1)
HSH-1-17	299.92	304.16	0.0485(0.0005)	0.1325(0.0016)	0.0198(0.0002)	124.2(22.2)	126.4(1.4)	126.5(1)

点号	元素含量(10^-6)		同位素比值			年龄(Ma)
点号	Th	U	²⁰⁷Pb/²⁰⁶Pb (1σ)	²⁰⁷Pb/²³⁵U (1σ)	²⁰⁶Pb/²³⁸U (1σ)	²⁰⁷Pb/²⁰⁶Pb (1σ)	²⁰⁷Pb/²³⁵U (1σ)	²⁰⁶Pb/²³⁸U (1σ)
ST20-4-2	2520.94	1517.28	0.0495(0.0009)	0.1483(0.0025)	0.0218(0.0003)	172.3(42.6)	140.4(2.2)	138.9(1.9)
ST20-4-3	4770.22	2354.92	0.0495(0.0008)	0.1426(0.0031)	0.0209(0.0004)	172.3(2.8)	135.3(2.7)	133.2(2.4)
ST20-4-4	5087.91	2821.75	0.0497(0.0008)	0.1342(0.0024)	0.0196(0.0003)	189(38.9)	127.9(2.2)	125.1(1.8)
ST20-4-11	2803.82	1821.53	0.0496(0.0008)	0.133(0.002)	0.0195(0.0002)	176(6.5)	126.7(1.8)	124.4(1.3)
ST20-4-12	743.86	412.13	0.0514(0.0022)	0.1445(0.0052)	0.0206(0.0003)	257.5(100)	137(4.6)	131.7(1.9)
ST20-4-16	4640.04	1948.16	0.0497(0.0009)	0.1437(0.0025)	0.0211(0.0004)	189(47.2)	136.3(2.2)	134.6(2.2)
ST20-4-17	4921.51	2370.92	0.0499(0.0007)	0.145(0.0033)	0.0211(0.0004)	190.8(33.3)	137.5(3)	134.5(2.7)
ST20-4-20	3332.63	1935.71	0.0478(0.0008)	0.1286(0.0022)	0.0196(0.0002)	87.1(36.1)	122.9(2)	125(1.6)
ST20-4-22	3288.99	2107.21	0.05(0.0009)	0.138(0.0028)	0.0201(0.0003)	194.5(42.6)	131.3(2.5)	128.1(1.9)
ST20-4-26	3341.68	2067.19	0.0501(0.0011)	0.1394(0.0028)	0.0203(0.0003)	211.2(51.8)	132.5(2.5)	129.6(2.1)
ST20-4-28	2578.08	1697.67	0.0497(0.0009)	0.1458(0.0035)	0.0214(0.0004)	189(40.7)	138.2(3.1)	136.2(2.8)
ST20-4-32	3498.82	1690.55	0.0486(0.0009)	0.1393(0.0033)	0.0208(0.0004)	131.6(42.6)	132.4(2.9)	132.8(2.3)
ST20-4-33	2201.67	1275.61	0.0473(0.0008)	0.1314(0.0029)	0.0202(0.0003)	61.2(40.7)	125.4(2.6)	128.7(1.8)
ST20-5-1	44.66	50.26	0.0546(0.0037)	0.1534(0.0093)	0.0208(0.0004)	398.2(150)	144.9(8.2)	132.7(2.4)
ST20-5-2	79.41	185.01	0.1825(0.0015)	12.3731(0.154)	0.4915(0.0056)	2675.6(13.3)	2633.1(11.8)	2577.3(24.1)
ST20-5-3	250.75	211.6	0.0497(0.0017)	0.1392(0.005)	0.0203(0.0002)	189(77.8)	132.3(4.5)	129.3(1.5)
ST20-5-4	77.69	77.05	0.0472(0.0036)	0.1237(0.0092)	0.0193(0.0003)	61.2(170.3)	118.4(8.4)	123.4(2.1)
ST20-5-7	42.58	76.2	0.0507(0.0035)	0.1408(0.0091)	0.0205(0.0005)	227.8(165.7)	133.8(8.1)	131.1(3)
ST20-5-8	163.27	180.44	0.0518(0.0018)	0.1455(0.005)	0.0204(0.0003)	276(77.8)	137.9(4.5)	130.4(1.7)
ST20-5-9	344.83	370.41	0.0508(0.0015)	0.1433(0.0044)	0.0204(0.0002)	235.3(68.5)	136(3.9)	130.4(1.6)
ST20-5-12	991.25	637.26	0.0504(0.0015)	0.1349(0.004)	0.0195(0.0003)	213(66.7)	128.5(3.6)	124.5(1.6)
ST20-5-13	12.26	102.79	0.1777(0.0019)	11.2809(0.2036)	0.4599(0.007)	2631.8(17.6)	2546.6(16.9)	2439.1(31)
ST20-5-16	253.21	281.49	0.1724(0.0016)	11.1802(0.216)	0.4705(0.0085)	2580.6(16.5)	2538.3(18.1)	2485.9(37.4)
ST17-26-1	157.49	153.38	0.0512(0.0019)	0.1463(0.0054)	0.0208(0.0003)	250.1(91.7)	138.6(4.8)	132.7(1.7)
ST17-26-2	102.33	279.21	0.1619(0.0013)	10.4929(0.1231)	0.4697(0.0051)	2476.2(18.7)	2479.3(11)	2482.4(22.6)
ST17-26-3	113.5	152.66	0.0994(0.0011)	3.8782(0.0553)	0.2832(0.0034)	1613(21)	1609.2(11.6)	1607.6(17.3)
ST17-26-4	498.79	625.08	0.0493(0.0011)	0.1366(0.003)	0.0201(0.0002)	166.8(51.8)	130(2.7)	128.5(1.2)
ST17-26-7	242.2	307.86	0.125(0.0012)	5.9621(0.1261)	0.3448(0.0061)	2029.3(17.1)	1970.3(18.4)	1909.7(29.5)
ST17-26-8	134.8	293.52	0.1691(0.0015)	11.1422(0.1254)	0.4789(0.0056)	2550(15.9)	2535.1(10.6)	2522.6(24.7)
ST17-26-9	1019.4	511.31	0.0529(0.0013)	0.1507(0.0039)	0.0207(0.0002)	324.1(27.8)	142.5(3.4)	132(1.4)
ST17-26-11	567.37	570.37	0.0533(0.0013)	0.1504(0.0036)	0.0205(0.0002)	338.9(55.6)	142.3(3.2)	130.8(1.3)
ST17-26-15	115.27	486.03	0.1657(0.0012)	9.3111(0.1098)	0.4076(0.0041)	2514.5(13.1)	2369.1(10.9)	2203.9(18.8)
ST17-26-19	179.13	296.65	0.1036(0.001)	4.168(0.0668)	0.2918(0.0039)	1700(17.1)	1667.7(13.2)	1650.3(19.7)
HSH-1-1	1376.12	887.24	0.0488(0.0003)	0.1341(0.0012)	0.0199(0.0002)	200.1(13)	127.8(1.1)	127.3(1)
HSH-1-2	360.25	313.43	0.0483(0.0005)	0.1323(0.0014)	0.0199(0.0001)	122.3(50)	126.2(1.3)	127(0.9)
HSH-1-3	968.05	461.73	0.049(0.0004)	0.1333(0.0015)	0.0198(0.0002)	146.4(16.7)	127.1(1.3)	126.1(1.2)
HSH-1-4	4980.35	1191.09	0.0489(0.0002)	0.1341(0.0013)	0.0199(0.0002)	142.7(11.1)	127.8(1.2)	127.2(1.1)
HSH-1-5	64.4	78.18	0.0506(0.0013)	0.1383(0.0035)	0.0199(0.0002)	233.4(57.4)	131.5(3.1)	127.3(1.2)
HSH-1-6	286.94	288.85	0.0485(0.0005)	0.1337(0.0018)	0.02(0.0002)	124.2(24.1)	127.4(1.6)	127.9(1.3)
HSH-1-7	464.57	278.07	0.0491(0.0005)	0.1343(0.0015)	0.0199(0.0002)	150.1(22.2)	127.9(1.3)	127(1)
HSH-1-8	638.56	462.47	0.0496(0.0004)	0.1357(0.0013)	0.0199(0.0002)	176(12)	129.2(1.1)	126.9(1)
HSH-1-9	987.79	730	0.0489(0.0003)	0.1344(0.0012)	0.0199(0.0001)	142.7(17.6)	128.1(1.1)	127.2(0.9)
HSH-1-10	651.83	570.15	0.0486(0.0004)	0.1326(0.0015)	0.0198(0.0002)	131.6(12)	126.5(1.3)	126.3(1.1)
HSH-1-11	371.03	579.23	0.0497(0.0003)	0.1364(0.0013)	0.0199(0.0001)	189(16.7)	129.8(1.2)	127.1(0.9)
HSH-1-12	73.47	121.7	0.0495(0.0012)	0.1343(0.0034)	0.0197(0.0002)	172.3(55.5)	128(3.1)	125.6(1)
HSH-1-13	791.98	535.76	0.0489(0.0005)	0.1321(0.0015)	0.0196(0.0002)	146.4(20.4)	126(1.4)	125(1)
HSH-1-14	183.11	177.51	0.0506(0.0008)	0.1359(0.0022)	0.0195(0.0002)	220.4(35.2)	129.4(2)	124.7(1.2)
HSH-1-15	746.91	400.81	0.0484(0.0005)	0.1305(0.0015)	0.0196(0.0001)	116.8(21.3)	124.5(1.3)	125(0.7)
HSH-1-16	441.67	435.83	0.0501(0.0004)	0.1378(0.0014)	0.02(0.0002)	198.2(13.9)	131.1(1.2)	127.7(1)
HSH-1-17	299.92	304.16	0.0485(0.0005)	0.1325(0.0016)	0.0198(0.0002)	124.2(22.2)	126.4(1.4)	126.5(1)

样品编号	ST17-26	ST20-4	ST20-5	HSH-1	YH-5	LSY-1	LSY-4
岩石名称	粗面质凝灰岩	石英正长岩	石英正长斑岩	辉石正长岩	正长斑岩	粗面岩	粗粒正长岩
主量元素
SiO₂	60.24	66.94	61.10	63.52	60.50	60.66	64.02
Al₂O₃	15.81	14.70	16.53	17.18	16.49	16.42	18.12
TiO₂	0.52	0.29	0.49	0.29	0.45	0.36	0.10
Fe₂O₃	4.50	2.76	4.66	3.11	3.17	2.75	1.14
FeO	1.82	1.12	0.88	0.65	2.92	2.73	0.68
CaO	2.74	1.59	1.25	1.60	2.27	2.95	1.02
MgO	2.23	0.11	1.25	0.72	1.36	1.56	0.11
K₂O	5.12	5.70	6.78	6.09	5.18	5.00	6.98
Na₂O	5.16	5.18	5.35	6.36	5.86	5.81	5.86
MnO	0.12	0.11	0.16	0.05	0.13	0.05	0.01
P₂O₅	0.35	0.14	0.28	0.11	0.34	0.30	0.12
灼失量	0.95	0.33	0.9	0.89	0.22	0.27	0.83
TFe₂O₃	6.52	4.00	5.64	3.76	6.09	5.48	1.82
总量	99.56	98.97	99.63	100.57	98.89	98.86	98.99
微量元素
Li	10.08	24.38	235.33	20.20	28.39	5.54	7.66
Be	4.85	9.60	7.22	3.60	6.60	5.77	2.84
Sc	12.42	4.06	8.37	4.80	6.33	7.12	1.52
V	126.8	197.79	190.30	87.30	102.50	98.70	159.10
Cr	60.34	13.02	29.62	9.22	16.90	45.10	10.90
Co	9.48	5.82	9.52	5.42	9.69	11.21	1.58
Ni	20.33	5.73	10.82	19.40	9.72	19.56	3.38
Cu	62.86	175.24	103.41	22.50	9.08	135.41	11.96
Zn	55.61	85.55	51.11	58.20	275.30	40.92	19.57
Ga	18.15	25.67	20.31	22.00	23.62	21.21	30.21
Rb	125.20	155.34	151.08	164.00	177.40	151.70	178.50
Sr	656.82	499.44	715.74	1300.00	1147.40	853.50	388.00
Zr	195.42	936.36	220.51	49.10	324.30	261.10	400.20
Nb	13.55	14.73	16.58	6.05	21.99	13.78	12.58
Mo	1.08	0.44	1.65	1.55	0.89	0.89	0.85
Y	26.48	25.72	21.09	14.90	22.44	16.11	12.59
Cd	0.02	0.03	0.15	0.017	169.69	31.66	1.70
In	0.05	0.03	0.05	0.022	0.05	0.04	0.02
Cs	2.25	1.46	2.03	2.54	2.70	1.95	0.48
Ba	853.13	504.30	997.43	1090.00	944.10	753.70	529.80
Hf	5.20	22.25	5.94	1.43	9.07	5.50	8.36
Ta	2.37	0.96	12.86	0.380	1.34	0.76	0.35
W	9.28	0.64	1.92	1.210	2.64	2.17	4.10
Tl	0.68	0.31	0.55	0.523	0.79	0.58	0.40
Pb	11.01	16.02	50.19	33.300	41.07	12.25	13.11
Bi	0.25	0.64	0.73	0.078	0.74	0.22	0.20
Th	8.67	26.90	8.04	3.630	7.44	8.88	12.73
U	2.44	12.04	2.89	1.090	1.03	1.59	2.60
La	24.81	27.96	30.99	26.400	36.48	23.70	26.08
Ce	45.12	35.85	51.68	40.500	70.96	45.39	32.04
Pr	5.59	4.16	6.04	4.920	8.42	5.45	3.02
Nd	22.75	15.69	23.60	19.900	32.56	21.73	9.77
Sm	4.76	3.08	4.45	3.600	6.40	4.25	1.67
Eu	1.36	1.02	1.42	1.350	1.56	1.44	0.59
Gd	3.97	2.86	3.86	3.210	5.28	3.66	1.58
Tb	0.59	0.43	0.54	0.529	0.76	0.51	0.25
Dy	3.30	2.62	2.90	2.740	4.35	2.96	1.65
Ho	0.64	0.59	0.57	0.501	0.77	0.54	0.36
Er	1.73	1.79	1.56	1.420	2.22	1.57	1.22
Tm	0.29	0.37	0.27	0.217	0.35	0.25	0.23
Yb	1.80	2.74	1.66	1.260	2.31	1.73	1.69
Lu	0.27	0.46	0.26	0.195	0.37	0.27	0.27

样品编号	ST17-26	ST20-4	ST20-5	HSH-1	YH-5	LSY-1	LSY-4
岩石名称	粗面质凝灰岩	石英正长岩	石英正长斑岩	辉石正长岩	正长斑岩	粗面岩	粗粒正长岩
主量元素
SiO₂	60.24	66.94	61.10	63.52	60.50	60.66	64.02
Al₂O₃	15.81	14.70	16.53	17.18	16.49	16.42	18.12
TiO₂	0.52	0.29	0.49	0.29	0.45	0.36	0.10
Fe₂O₃	4.50	2.76	4.66	3.11	3.17	2.75	1.14
FeO	1.82	1.12	0.88	0.65	2.92	2.73	0.68
CaO	2.74	1.59	1.25	1.60	2.27	2.95	1.02
MgO	2.23	0.11	1.25	0.72	1.36	1.56	0.11
K₂O	5.12	5.70	6.78	6.09	5.18	5.00	6.98
Na₂O	5.16	5.18	5.35	6.36	5.86	5.81	5.86
MnO	0.12	0.11	0.16	0.05	0.13	0.05	0.01
P₂O₅	0.35	0.14	0.28	0.11	0.34	0.30	0.12
灼失量	0.95	0.33	0.9	0.89	0.22	0.27	0.83
TFe₂O₃	6.52	4.00	5.64	3.76	6.09	5.48	1.82
总量	99.56	98.97	99.63	100.57	98.89	98.86	98.99
微量元素
Li	10.08	24.38	235.33	20.20	28.39	5.54	7.66
Be	4.85	9.60	7.22	3.60	6.60	5.77	2.84
Sc	12.42	4.06	8.37	4.80	6.33	7.12	1.52
V	126.8	197.79	190.30	87.30	102.50	98.70	159.10
Cr	60.34	13.02	29.62	9.22	16.90	45.10	10.90
Co	9.48	5.82	9.52	5.42	9.69	11.21	1.58
Ni	20.33	5.73	10.82	19.40	9.72	19.56	3.38
Cu	62.86	175.24	103.41	22.50	9.08	135.41	11.96
Zn	55.61	85.55	51.11	58.20	275.30	40.92	19.57
Ga	18.15	25.67	20.31	22.00	23.62	21.21	30.21
Rb	125.20	155.34	151.08	164.00	177.40	151.70	178.50
Sr	656.82	499.44	715.74	1300.00	1147.40	853.50	388.00
Zr	195.42	936.36	220.51	49.10	324.30	261.10	400.20
Nb	13.55	14.73	16.58	6.05	21.99	13.78	12.58
Mo	1.08	0.44	1.65	1.55	0.89	0.89	0.85
Y	26.48	25.72	21.09	14.90	22.44	16.11	12.59
Cd	0.02	0.03	0.15	0.017	169.69	31.66	1.70
In	0.05	0.03	0.05	0.022	0.05	0.04	0.02
Cs	2.25	1.46	2.03	2.54	2.70	1.95	0.48
Ba	853.13	504.30	997.43	1090.00	944.10	753.70	529.80
Hf	5.20	22.25	5.94	1.43	9.07	5.50	8.36
Ta	2.37	0.96	12.86	0.380	1.34	0.76	0.35
W	9.28	0.64	1.92	1.210	2.64	2.17	4.10
Tl	0.68	0.31	0.55	0.523	0.79	0.58	0.40
Pb	11.01	16.02	50.19	33.300	41.07	12.25	13.11
Bi	0.25	0.64	0.73	0.078	0.74	0.22	0.20
Th	8.67	26.90	8.04	3.630	7.44	8.88	12.73
U	2.44	12.04	2.89	1.090	1.03	1.59	2.60
La	24.81	27.96	30.99	26.400	36.48	23.70	26.08
Ce	45.12	35.85	51.68	40.500	70.96	45.39	32.04
Pr	5.59	4.16	6.04	4.920	8.42	5.45	3.02
Nd	22.75	15.69	23.60	19.900	32.56	21.73	9.77
Sm	4.76	3.08	4.45	3.600	6.40	4.25	1.67
Eu	1.36	1.02	1.42	1.350	1.56	1.44	0.59
Gd	3.97	2.86	3.86	3.210	5.28	3.66	1.58
Tb	0.59	0.43	0.54	0.529	0.76	0.51	0.25
Dy	3.30	2.62	2.90	2.740	4.35	2.96	1.65
Ho	0.64	0.59	0.57	0.501	0.77	0.54	0.36
Er	1.73	1.79	1.56	1.420	2.22	1.57	1.22
Tm	0.29	0.37	0.27	0.217	0.35	0.25	0.23
Yb	1.80	2.74	1.66	1.260	2.31	1.73	1.69
Lu	0.27	0.46	0.26	0.195	0.37	0.27	0.27