Zircon U-Pb Isotopic Geochronology,Bulk Geochemistry and Their Geological Significance of the Quartz Monzodiorite from the Taibaihe Region in the South Qinling Orogen

doi:10.19657/j.geoscience.1000-8527.2023.013

Abstract

Abstract:

In order to ascertain the formation time, petrogenesis, magma source and tectonic setting of the intermediate rocks in Taibaihe area of South Qinling, zircon U-Pb geochronology and geochemistry of the quartz monzodiorite have been studied in the thesis. The results of LA-ICP-MS zircon U-Pb gechronology show that the ²⁰⁶Pb/²³⁸U weighted mean age of quartz monzodioirte is (216.8±2.2) Ma (MSWD=1.15,n=20), indicating that it was formed in the Late Triassic. According to the lithogeochemistry studies, the quartz monzodioirte belongs to the aluminum unsaturate and high potassium calc-alkaline series. This suite of rocks are rich in LILE (such as K, Rb) and HFSE (such as Zr, Hf), and relatively depleted in Nb, Ta, P, and Ti. The quartz monzodiorite is rich in LREE and poor in HREE, with slightly negative Eu anomalies. The magma source has the characteristics of crust-mantle mixed molten. Based on the tectonic evolution of the South Qinling Orogen, we consider that the Taibaihe quartz monzodioirte may be formed in the syn-collisional to post-collisional stage of the orogeny, belonging to the product of same homologous magmatism activity as Xiba granites. According to the previous studies of regional magmatism, tectonic activity and mineralization, and the new work of magmatic-metallogenic ages modification in our study, it is considered that the metallogenic age of Fengtai ore cluster region is Late Triassic.

Key words: LA-ICP-MS zircon U-Pb age, geochemistry, quartz monzodiorite, South Qinling orogenic belt, Taibaihe

CLC Number:

WANG Ruiting, LI Qingfeng, QIN Xishe, ZHANG Bin, WANG Bowen, JI Yuefei. Zircon U-Pb Isotopic Geochronology,Bulk Geochemistry and Their Geological Significance of the Quartz Monzodiorite from the Taibaihe Region in the South Qinling Orogen[J]. Geoscience, 2023, 37(03): 562-572.

Figures/Tables 8

References 58

[1]	MENG Q, ZHANG G W. Timing of collision of the North and South China blocks: Controversy and reconciliation[J]. Geology, 1999, 27: 123-126. DOI URL
[2]	张国伟, 张本仁, 袁学诚, 等. 秦岭造山带与大陆动力学[M]. 北京: 科学出版社, 2001.
[3]	LI S Z, KUSKY T M, WANG L, et al. Collision leading to multiple-stage large-scale extrusion in the Qinling orogen: Insights from the Mianlue suture[J]. Gondwana Research, 2007, 12(1/2): 121-143. DOI URL
[4]	葛肖虹, 马文璞. 中国区域大地构造学教程[M]. 北京: 地质出版社, 2014: 1-466.
[5]	张帆, 刘树文, 李秋根, 等. 秦岭西坝花岗岩LA-ICP-MS锆石U-Pb年代学及其地质意义[J]. 北京大学学报(自然科学版), 2009, 45(5): 833-840.
[6]	CHEN S C, WANG Y T, YU J J, et al. Petrogenesis of Triassic granitoids in the Fengxian-Taibai ore cluster, Western Qinling Orogen, central China: Implications for tectonic evolution and polymetallic mineralization[J]. Ore Geology Reviews, 2020, 123: 103577. DOI URL
[7]	张成立, 王涛, 王晓霞. 秦岭造山带早中生代花岗岩成因及其构造环境[J]. 高校地质学报, 2008, 14(3): 304-316.
[8]	汪欢, 王建平, 刘家军, 等. 南秦岭西坝花岗质岩体矿物学特征及成岩意义[J]. 现代地质, 2011, 25(3): 489-502.
[9]	尚瑞钧, 严阵. 秦巴花岗岩[M]. 武汉: 中国地质大学出版社, 1988: 1-228.
[10]	李荣社, 宋子季, 校培喜, 等. 区域地质调查报告(1∶5万靖口关幅、江口镇幅)[R]. 西安: 陕西省地质矿产局, 1992: 1-163.
[11]	邵世才, 汪东波. 南秦岭三个典型金矿床的Ar-Ar年代及其地质意义[J]. 地质学报, 2001, 75(1): 106-110.
[12]	张作衡, 毛景文, 李晓峰. 双王角砾岩型金矿床地质地球化学及成矿机制[J]. 矿床地质, 2004, 23(2): 241-252.
[13]	刘协鲁, 王义天, 胡乔青, 等. 陕西凤太矿集区柴蚂金矿床成矿时代的⁴⁰Ar-³⁹Ar年龄证据[J]. 矿床地质, 2018, 37(1): 163-174.
[14]	张革利, 田涛, 王瑞廷, 等. 凤太矿集区东塘子铅锌矿床S、Pb同位素组成对成矿物质来源的示踪[J]. 中国地质, 2020, 47(2): 472-484.
[15]	王相, 唐荣扬, 李实, 等. 秦岭造山与金属成矿[M]. 北京: 冶金工业出版社, 1996: 187-230.
[16]	LUDING K R. User’s Manual for Isoplot 3.00: A Geochronological Toolkit for Microsoft Excel[M]. Berkeley: Berkeley Geochronological Center Special Publication, 2003: 25-32.
[17]	吴元保, 郑永飞. 锆石成因矿物学研究及其对U-Pb年龄解释的制约[J]. 科学通报, 2004, 49(16): 1589-1604.
[18]	PECCERILLO A, TAYLOR S R. Geochemistry of Eocene calc-alkaline volcanic rocks from the Kastamonu area, Northern Turkey[J]. Contributions to Mineralogy and Petrology, 1976, 58(1): 63-81. DOI URL
[19]	MIDDLEMOST E A K. Magmas and magmatic tocks: an introduction to igneous petrology[J]. Geological Magazine, 1985, 123(1): 87-88.
[20]	MANIAR P D, PICCOLI P M. Tectonic discrimination of grani-toids[J]. Geological Society of America Bulletin, 1989, 101(5): 635-643. DOI URL
[21]	SUN S S, MCDONOUGH W F. Chemical and isotopic systematics of oceanic basalts: Implications for mantle composition and processes[J]. Geological Society, London, Special Publications, 1989, 42(1): 313-345. DOI URL
[22]	秦江锋, 赖绍聪, 李永飞. 扬子板块北缘碧口地区阳坝花岗闪长岩体成因研究及其地质意义[J]. 岩石学报, 2005, 21(3): 697-710.
[23]	DAN M. Some remarks on the movement of small melt fractions in the mantle[J]. Earth and Planetary Science Letters, 1989, 95(1/2): 53-72. DOI URL
[24]	RUDNICK R L, FOUNTAIN D M. Nature and composition of the continental crust: A lower crustal perspective[J]. Reviews of Geophysics, 1995, 33(3): 267. DOI URL
[25]	金勤海, 鞠党辰. 陕西太白南部西坝复式岩体的成因及其与双王金矿床的关系[J]. 现代地质, 1990, 4(4): 65-76.
[26]	ALTHERR R, HOLL A, HEGNER E, et al. High-potassium, calc-alkaline I-type plutonism in the European Variscides: Northern Vosges (France) and northern Schwarzwald (Germany)[J]. Lithos, 2000, 50(1/2/3): 51-73. DOI URL
[27]	张本仁, 高山, 张宏飞, 等. 秦岭造山带地球化学[M]. 北京: 科学出版社, 2002: 1-187.
[28]	JIANG Y H, JIN G D, LIAO S Y, et al. Geochemical and Sr-Nd-Hf isotopic constraints on the origin of Late Triassic granitoids from the Qinling orogen, central China: Implications for a continental arc to continent-continent collision[J]. Lithos, 2010, 117(1/2/3/4): 183-197. DOI URL
[29]	刘树文, 杨朋涛, 李秋根, 等. 秦岭中段印支期花岗质岩浆作用与造山过程[J]. 吉林大学学报(地球科学版), 2011, 41(6): 1928-1943.
[30]	杨朋涛, 刘树文, 李秋根, 等. 何家庄岩体的年龄和成因及其对南秦岭早三叠世构造演化的制约[J]. 中国科学(地球科学), 2013, 43(11): 1874-1893.
[31]	张国伟, 董云鹏, 赖绍聪, 等. 秦岭—大别造山带南缘勉略构造带与勉略缝合带[J]. 中国科学(D辑地球科学), 2003, 33(12): 1121-1135.
[32]	张国伟, 程顺有, 郭安林, 等. 秦岭—大别中央造山系南缘勉略古缝合带的再认识——兼论中国大陆主体的拼合[J]. 地质通报, 2004, 23(9/10): 846-853.
[33]	LAI S C, QIN J F, CHEN L, et al. Geochemistry of ophiolites from the Mian-Lue suture zone: Implications for the tectonic evolution of the Qinling orogen, central China[J]. International Geology Review, 2008, 50(7): 650-664. DOI URL
[34]	DONG Y P, ZHANG G W, NEUBAUER F, et al. Tectonic evolution of the Qinling orogen, China: Review and synthesis[J]. Journal of Asian Earth Sciences, 2011, 41(3): 213-237. DOI URL
[35]	DONG Y P, LIU X M, ZHANG G W, et al. Triassic diorites and granitoids in the Foping area: Constraints on the conversion from subduction to collision in the Qinling orogen, China[J]. Journal of Asian Earth Sciences, 2012, 47: 123-142. DOI URL
[36]	冯益民, 曹宣铎, 张二朋, 等. 西秦岭造山带的演化、构造格局和性质[J]. 西北地质, 2003, 36(1): 1-10.
[37]	汪欢. 陕西双王金矿区岩浆岩特征及与金成矿的关系[D]. 北京: 中国地质大学(北京), 2012, 1-112.
[38]	石准立, 刘瑾璇, 樊硕诚, 等. 陕西双王金矿床地质特征及其成因[M]. 西安: 陕西科学技术出版社, 1989: 1-116.
[39]	石准立, 刘瑾璇, 金勤海. 与碱性碳酸岩有关的双王金矿床[M]// 秦巴金矿论文集. 北京: 地质出版社, 1993: 133-146.
[40]	冯建忠, 汪东波, 王学明, 等. 陕西凤县八卦庙超大型金矿床成矿地质特征及成矿作用[J]. 地质学报, 2003, 77(3): 387-398, 438.
[41]	张娟. 西秦岭双王金矿床与火成碳酸岩成因关系[J]. 矿床地质, 2021, 40(1): 169-173.
[42]	张娟. 陕西凤太矿集区八卦庙超大型金矿床成矿过程与成矿机制研究[D]. 北京: 中国地质科学院, 2016: 1-200.
[43]	王博闻, 张斌, 李青锋, 等. 南秦岭双盒子花岗斑岩地球化学特征、锆石U-Pb测年及其地质意义[J]. 矿产与地质, 2019, 33(6): 1016-1025.
[44]	于荣炳. K-Ar年龄失真问题的探讨[J]. 国外前寒武纪地质, 1991, 14(4): 70-88.
[45]	吴珍汉. 用钾-氩法求地质事件真实年龄的方法探讨[J]. 现代地质, 1989, 3(4): 404-412.
[46]	王瑞廷, 王东生, 代军治, 等. 秦岭造山带陕西段主要矿集区铅锌银铜金矿综合勘查技术研究[M]. 北京: 地质出版社, 2012.
[47]	陈绍聪, 王义天, 胡乔青, 等. 西秦岭凤太矿集区花岗闪长斑岩脉的成因类型和年龄及其地质意义[J]. 地球学报, 2018, 39(1): 14-26.
[48]	苏蔷薇, 张静, 王文博. 陕西秦岭梁岩体LA-ICP-MS锆石U-Pb年龄及其地质意义[J]. 现代地质, 2016, 30(5): 994-1003.
[49]	王瑞廷, 张革利, 李青锋, 等. 秦岭凤太铅锌-金矿集区成矿规律与找矿预测[J]. 地球科学与环境学报, 2021, 43(3): 528-548.
[50]	刘必政, 王建平, 王可新, 等. 陕西省双王金矿床成矿流体特征及其地质意义[J]. 现代地质, 2011, 25(6): 1088-1098.
[51]	毛景文, 周振华, 丰成友, 等. 初论中国三叠纪大规模成矿作用及其动力学背景[J]. 中国地质, 2012, 39(6): 1437-1471.
[52]	王义天, 王瑞廷, 胡乔青, 等. 西秦岭凤太和西成矿集区铅锌成矿作用对比[J]. 矿物学报, 2013, 33(增): 52-54.
[53]	王义天, 李霞, 王瑞廷, 等. 陕西凤太矿集区丝毛岭金矿床成矿时代的Ar-Ar年龄证据[J]. 地球科学与环境学报, 2014, 36(3): 61-72.
[54]	王义天, 毛景文, 胡乔青, 等. 西秦岭西成和凤太矿集区三叠纪多金属成矿作用特征、规律及找矿方向[J]. 地球科学与环境学报, 2021, 43(3): 409-435.
[55]	王义天, 胡乔青, 王瑞廷, 等. 陕西凤太矿集区铅锌矿床的成矿模型及其找矿意义[J]. 矿床地质, 2020, 39(4): 587-606.
[56]	HU Q Q, WANG Y T, MAO J W, et al. Genesis of the Bafang-shan-Erlihe Zn-Pb-Cu deposit in the Fengxian-Taibai ore cluster, West Qinling, China: Evidence from ore geology and ore-forming fluids[J]. Ore Geology Reviews, 2020, 126: 103734. DOI URL
[57]	谢玉玲, 徐九华, 何知礼, 等. 太白金矿流体包裹体中黄铁矿和铁白云石等子矿物的发现及成因意义[J]. 矿床地质, 2000, 19(1): 54-60.
[58]	谭运金, 邵世才, 田民民. 西秦岭礼县—太白地区金、铅锌矿床的地质地球化学[J]. 矿床地质, 2000, 19(3): 201-210.

分析点	含量(10^-6)		Th/U	同位素比值						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
029AB01	120.85	181.58	0.67	0.049 63	0.003 34	0.233 37	0.015 41	0.034 13	0.000 60	177.6	149.80	213.0	12.69	216.3	3.71
030AB02	120.05	177.62	0.68	0.050 63	0.003 66	0.234 76	0.016 69	0.033 65	0.000 60	224.0	159.16	214.1	13.72	213.4	3.75
031AB03	88.77	125.32	0.71	0.055 02	0.004 27	0.249 65	0.018 98	0.032 93	0.000 64	413.1	164.77	226.3	15.42	208.9	4.00
032AB04	93.54	150.03	0.62	0.051 08	0.004 14	0.237 84	0.018 93	0.033 80	0.000 66	244.3	176.60	216.7	15.53	214.3	4.08
033AB05	39.31	74.43	0.53	0.053 06	0.006 56	0.247 13	0.030 04	0.033 80	0.000 89	331.2	258.67	224.2	24.45	214.3	5.54
034AB06	73.22	138.52	0.53	0.050 28	0.004 43	0.239 56	0.020 75	0.034 58	0.000 70	208.1	192.02	218.1	16.99	219.1	4.38
038AB07	203.38	273.74	0.74	0.050 73	0.002 86	0.246 43	0.013 61	0.035 25	0.000 55	228.5	125.01	223.7	11.09	223.3	3.45
039AB08	73.54	114.14	0.64	0.049 64	0.005 09	0.227 43	0.022 94	0.033 25	0.000 72	178.3	222.92	208.1	18.98	210.8	4.50
040AB09	70.87	117.44	0.60	0.055 20	0.007 23	0.264 92	0.034 36	0.034 83	0.000 77	420.0	268.75	238.6	27.58	220.7	4.77
041AB10	84.16	121.35	0.69	0.051 29	0.005 19	0.245 59	0.024 40	0.034 75	0.000 79	253.9	216.63	223.0	19.89	220.2	4.90
042AB11	95.68	159.23	0.60	0.076 38	0.005 02	0.369 51	0.023 59	0.035 10	0.000 69	1 104.9	126.18	319.3	17.49	222.4	4.32
043AB12	106.71	133.51	0.80	0.049 14	0.005 30	0.221 87	0.023 56	0.032 76	0.000 75	154.6	234.91	203.5	19.58	207.8	4.69
044AB13	84.66	117.21	0.72	0.050 79	0.005 35	0.237 86	0.024 60	0.033 98	0.000 81	231.2	226.36	216.7	20.17	215.4	5.03
046AB14	52.50	98.39	0.53	0.050 73	0.006 35	0.237 00	0.029 13	0.033 90	0.000 92	228.7	265.57	216.0	23.91	214.9	5.74
047AB15	86.77	123.85	0.70	0.051 02	0.005 55	0.250 27	0.026 71	0.035 59	0.000 87	241.6	232.37	226.8	21.69	225.5	5.42
048AB16	86.07	132.55	0.65	0.049 80	0.004 61	0.232 04	0.021 13	0.033 81	0.000 71	185.6	202.56	211.9	17.41	214.3	4.41
049AB17	88.23	140.74	0.63	0.050 59	0.004 33	0.239 61	0.020 16	0.034 37	0.000 68	222.0	186.76	218.1	16.51	217.8	4.21
050AB18	95.85	136.27	0.70	0.046 69	0.003 88	0.221 11	0.018 06	0.034 36	0.000 65	33.3	187.89	202.8	15.02	217.8	4.08
051AB19	105.36	132.96	0.79	0.049 76	0.004 32	0.233 56	0.019 88	0.034 05	0.000 69	184.0	190.22	213.1	16.37	215.8	4.32
052AB20	102.79	157.96	0.65	0.049 59	0.003 29	0.238 11	0.015 53	0.034 83	0.000 59	175.8	147.98	216.9	12.74	220.7	3.71

分析点	含量(10^-6)		Th/U	同位素比值						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
029AB01	120.85	181.58	0.67	0.049 63	0.003 34	0.233 37	0.015 41	0.034 13	0.000 60	177.6	149.80	213.0	12.69	216.3	3.71
030AB02	120.05	177.62	0.68	0.050 63	0.003 66	0.234 76	0.016 69	0.033 65	0.000 60	224.0	159.16	214.1	13.72	213.4	3.75
031AB03	88.77	125.32	0.71	0.055 02	0.004 27	0.249 65	0.018 98	0.032 93	0.000 64	413.1	164.77	226.3	15.42	208.9	4.00
032AB04	93.54	150.03	0.62	0.051 08	0.004 14	0.237 84	0.018 93	0.033 80	0.000 66	244.3	176.60	216.7	15.53	214.3	4.08
033AB05	39.31	74.43	0.53	0.053 06	0.006 56	0.247 13	0.030 04	0.033 80	0.000 89	331.2	258.67	224.2	24.45	214.3	5.54
034AB06	73.22	138.52	0.53	0.050 28	0.004 43	0.239 56	0.020 75	0.034 58	0.000 70	208.1	192.02	218.1	16.99	219.1	4.38
038AB07	203.38	273.74	0.74	0.050 73	0.002 86	0.246 43	0.013 61	0.035 25	0.000 55	228.5	125.01	223.7	11.09	223.3	3.45
039AB08	73.54	114.14	0.64	0.049 64	0.005 09	0.227 43	0.022 94	0.033 25	0.000 72	178.3	222.92	208.1	18.98	210.8	4.50
040AB09	70.87	117.44	0.60	0.055 20	0.007 23	0.264 92	0.034 36	0.034 83	0.000 77	420.0	268.75	238.6	27.58	220.7	4.77
041AB10	84.16	121.35	0.69	0.051 29	0.005 19	0.245 59	0.024 40	0.034 75	0.000 79	253.9	216.63	223.0	19.89	220.2	4.90
042AB11	95.68	159.23	0.60	0.076 38	0.005 02	0.369 51	0.023 59	0.035 10	0.000 69	1 104.9	126.18	319.3	17.49	222.4	4.32
043AB12	106.71	133.51	0.80	0.049 14	0.005 30	0.221 87	0.023 56	0.032 76	0.000 75	154.6	234.91	203.5	19.58	207.8	4.69
044AB13	84.66	117.21	0.72	0.050 79	0.005 35	0.237 86	0.024 60	0.033 98	0.000 81	231.2	226.36	216.7	20.17	215.4	5.03
046AB14	52.50	98.39	0.53	0.050 73	0.006 35	0.237 00	0.029 13	0.033 90	0.000 92	228.7	265.57	216.0	23.91	214.9	5.74
047AB15	86.77	123.85	0.70	0.051 02	0.005 55	0.250 27	0.026 71	0.035 59	0.000 87	241.6	232.37	226.8	21.69	225.5	5.42
048AB16	86.07	132.55	0.65	0.049 80	0.004 61	0.232 04	0.021 13	0.033 81	0.000 71	185.6	202.56	211.9	17.41	214.3	4.41
049AB17	88.23	140.74	0.63	0.050 59	0.004 33	0.239 61	0.020 16	0.034 37	0.000 68	222.0	186.76	218.1	16.51	217.8	4.21
050AB18	95.85	136.27	0.70	0.046 69	0.003 88	0.221 11	0.018 06	0.034 36	0.000 65	33.3	187.89	202.8	15.02	217.8	4.08
051AB19	105.36	132.96	0.79	0.049 76	0.004 32	0.233 56	0.019 88	0.034 05	0.000 69	184.0	190.22	213.1	16.37	215.8	4.32
052AB20	102.79	157.96	0.65	0.049 59	0.003 29	0.238 11	0.015 53	0.034 83	0.000 59	175.8	147.98	216.9	12.74	220.7	3.71

样品号	SiO₂	TiO₂	Al₂O₃	Fe₂O₃	FeO	MnO	MgO	CaO		Na₂O	K₂O		P₂O₅		LOI		H₂O⁺		总量
J3T-1	61.00	0.80	15.48	1.31	3.85	0.08	4.03	4.98		3.48	3.46		0.21		1.22		0.36		100.26
J3T-2	60.84	0.86	15.42	1.70	3.70	0.09	3.91	4.80		3.17	3.72		0.20		1.50		0.40		100.31
J3T-3	66.29	0.51	15.10	1.15	2.30	0.06	2.15	3.46		3.52	4.00		0.13		1.25		0.42		100.34
样品号	Sc	V	Cr	Cu	Ni	Co	W	Mo		Rb	Ba		Th		U		Ta		Nb
J3T-1	20.70	116.00	163.00	37.00	66.50	23.60	43.00	1.48		141.00	1040.00		12.80		2.91		1.47		15.50
J3T-2	17.70	125.00	157.00	42.20	65.30	24.30	36.40	0.38		172.00	1110.00		15.90		2.69		1.32		16.60
J3T-3	13.50	74.00	70.90	17.00	29.60	15.10	43.00	1.87		164.00	90.00		17.40		2.33		0.96		13.50
样品号	Pb	Sr	Zr	Hf	Y	La	Ce	Pr		Nd	Sm		Eu		Gd		Tb		Dy
J3T-1	25.20	563.00	263.00	7.79	18.80	38.20	70.10	8.02		28.10	4.97		1.24		4.31		0.68		3.46
J3T-2	26.50	535.00	302.00	8.87	19.20	40.50	77.40	8.94		30.90	5.54		1.27		4.34		0.72		3.62
J3T-3	26.30	419.00	183.00	5.61	15.40	35.40	64.20	7.12		23.20	4.18		1.02		3.29		0.50		2.96
样品号	Ho	Er	Tm	Yb	Lu	ΣREE	LREE/HREE		La_N/Yb_N			δEu		δCe		La_N/Sm_N		Gd_N/Yb_N
J3T-1	0.67	1.88	0.29	1.94	0.27	164.13	11.16		14.12			0.80		0.93		4.96		1.84
J3T-2	0.74	2.08	0.32	2.18	0.32	178.87	11.49		13.33			0.76		0.95		4.72		1.65
J3T-3	0.54	1.55	0.24	1.68	0.24	146.12	12.28		15.11			0.81		0.94		5.47		1.62

样品号	SiO₂	TiO₂	Al₂O₃	Fe₂O₃	FeO	MnO	MgO	CaO		Na₂O	K₂O		P₂O₅		LOI		H₂O⁺		总量
J3T-1	61.00	0.80	15.48	1.31	3.85	0.08	4.03	4.98		3.48	3.46		0.21		1.22		0.36		100.26
J3T-2	60.84	0.86	15.42	1.70	3.70	0.09	3.91	4.80		3.17	3.72		0.20		1.50		0.40		100.31
J3T-3	66.29	0.51	15.10	1.15	2.30	0.06	2.15	3.46		3.52	4.00		0.13		1.25		0.42		100.34
样品号	Sc	V	Cr	Cu	Ni	Co	W	Mo		Rb	Ba		Th		U		Ta		Nb
J3T-1	20.70	116.00	163.00	37.00	66.50	23.60	43.00	1.48		141.00	1040.00		12.80		2.91		1.47		15.50
J3T-2	17.70	125.00	157.00	42.20	65.30	24.30	36.40	0.38		172.00	1110.00		15.90		2.69		1.32		16.60
J3T-3	13.50	74.00	70.90	17.00	29.60	15.10	43.00	1.87		164.00	90.00		17.40		2.33		0.96		13.50
样品号	Pb	Sr	Zr	Hf	Y	La	Ce	Pr		Nd	Sm		Eu		Gd		Tb		Dy
J3T-1	25.20	563.00	263.00	7.79	18.80	38.20	70.10	8.02		28.10	4.97		1.24		4.31		0.68		3.46
J3T-2	26.50	535.00	302.00	8.87	19.20	40.50	77.40	8.94		30.90	5.54		1.27		4.34		0.72		3.62
J3T-3	26.30	419.00	183.00	5.61	15.40	35.40	64.20	7.12		23.20	4.18		1.02		3.29		0.50		2.96
样品号	Ho	Er	Tm	Yb	Lu	ΣREE	LREE/HREE		La_N/Yb_N			δEu		δCe		La_N/Sm_N		Gd_N/Yb_N
J3T-1	0.67	1.88	0.29	1.94	0.27	164.13	11.16		14.12			0.80		0.93		4.96		1.84
J3T-2	0.74	2.08	0.32	2.18	0.32	178.87	11.49		13.33			0.76		0.95		4.72		1.65
J3T-3	0.54	1.55	0.24	1.68	0.24	146.12	12.28		15.11			0.81		0.94		5.47		1.62