新疆北部喇嘛苏铜矿床成矿时代与构造背景:来自石榴子石原位LA-ICP-MS U-Pb测年的证据

doi:10.19657/j.geoscience.1000-8527.2023.003

现代地质 ›› 2023, Vol. 37 ›› Issue (03): 645-661.DOI: 10.19657/j.geoscience.1000-8527.2023.003

• 矿床学与地球化学探矿学 • 上一篇下一篇

新疆北部喇嘛苏铜矿床成矿时代与构造背景:来自石榴子石原位LA-ICP-MS U-Pb测年的证据

王晓彤¹^,²(), 刘军¹(), 杨艳³, 何军成²

1.中国地质科学院矿产资源研究所自然资源部成矿作用与资源评价重点实验室, 北京 100037
2.中国地质大学(北京), 北京 100083
3.中国地质调查局发展研究中心, 北京 100037

收稿日期:2022-05-13 修回日期:2023-04-17 出版日期:2023-06-10 发布日期:2023-07-20
通讯作者: 刘军,男,研究员,博士生导师,1983年出生,矿床学专业,主要从事岩浆热液矿床成因及区域成矿规律研究。Email: junliu@yeah.net。
作者简介:王晓彤,女,硕士研究生,1998年出生,矿物学、岩石学、矿床学专业,主要从事矽卡岩型铜矿成因研究。Email: wangxiaotongcugb@163.com。
基金资助:
国家自然科学基金项目(41672066);国家自然科学基金项目(41820104010);中央级公益性科研院所基本科研业务费项目(KK2106);中央级公益性科研院所基本科研业务费项目(KK2205);国家重点研发计划项目(2017YFC0601403)

Geochronology and Tectonic Setting of the Lamasu Cu Deposit in Northern Xinjiang: Evidence from In-situ LA-ICP-MS Garnet U-Pb Dating

WANG Xiaotong¹^,²(), LIU Jun¹(), YANG Yan³, HE Juncheng²

1. MNR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China
2. China University of Geosciences (Beijing), Beijing 100083, China
3. Development Research Center of Chinese Geological Survey, Beijing 100037, China

Received:2022-05-13 Revised:2023-04-17 Online:2023-06-10 Published:2023-07-20

摘要/Abstract

摘要：

石榴子石是矽卡岩型矿床中最常见的蚀变矿物,石榴子石U-Pb定年技术的发展应用为准确限定矽卡岩成矿作用时代提供了新手段。我国西天山地区发育大量矽卡岩型铜矿床,由于缺乏精确的成矿年代学数据,制约了矿床成因和成矿动力学背景认识的深入。为了精确厘定西天山地区矽卡岩型铜矿化时代,本文选取代表性的喇嘛苏大型铜矿床矽卡岩带中石榴子石为研究对象,利用电子探针和LA-ICP-MS原位U-Pb定年技术开展了矿物成分和年代学分析。根据喇嘛苏矿床石榴子石的岩相学特征,将其分为红棕色石榴子石、浅棕色石榴子石和黄绿色石榴子石三类。电子探针分析显示,三类石榴子石的端元组分均主要为钙铁榴石(56.96%~85.09%),其次为钙铝榴石(14.33%~43.85%),属于钙铁榴石-钙铝榴石系列。U-Pb定年获得3件石榴子石的加权平均年龄介于(389.1±2.0)~(387.0±2.3)Ma之间,表明成矿时间为中泥盆世。结合区域构造演化史,喇嘛苏矽卡岩型铜矿床形成于北天山洋壳的俯冲环境。

关键词: LA-ICP-MS U-Pb, 石榴子石, 矽卡岩, 喇嘛苏, 新疆

Abstract:

Garnet, as a typical altered mineral in skarn deposits, is suggested to be an important mineral for obtaining accurate ore-forming age. There are abundant skarn Cu deposits in the Chinese Western Tianshan, yet the actual skarn Cu ore-forming ages remain controversial. This limits sufficient understanding of skarn Cu ore genesis and metallogenic dynamic background in the Chinese Western Tianshan. To obtain accurate metallogenic age of skarn Cu deposits in the Chinese Western Tianshan, we selected garnet from the Lamasu Cu deposit for systematic geochemical and geochronological study by Electron Probe X-ray Micro-Analyzer (EPMA) and LA-ICP-MS U-Pb dating. According to the hand-specimen and petrographic characteristics of the garnet minerals, the Lamasu deposit has three types of garnets, including red-brown, light-brown and yellow-green garnets. These garnets belong to the andradite-grossularite series, and occur as andradite (56.96%-85.09%) with minor grossularite (14.33%-43.85%). Three types of garnets yielded LA-ICP-MS U-Pb weighted average ages of (389.1±2.0) to (387.0±2.3) Ma, indicating that the Lamasu Cu mineralization occurred during the Middle Devonian subduction of the northern Tianshan oceanic crust.

Key words: LA-ICP-MS U-Pb dating, garnet, skarn, Lamasu, Xinjiang

中图分类号:

王晓彤, 刘军, 杨艳, 何军成. 新疆北部喇嘛苏铜矿床成矿时代与构造背景:来自石榴子石原位LA-ICP-MS U-Pb测年的证据[J]. 现代地质, 2023, 37(03): 645-661.

WANG Xiaotong, LIU Jun, YANG Yan, HE Juncheng. Geochronology and Tectonic Setting of the Lamasu Cu Deposit in Northern Xinjiang: Evidence from In-situ LA-ICP-MS Garnet U-Pb Dating[J]. Geoscience, 2023, 37(03): 645-661.

图/表 9

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矿床名称	类型	金属量	品位	赋矿围岩	金属矿物	年龄(Ma)	参考文献
科克赛	斑岩型 Cu-Mo	27 kt Cu	0.2%~ 0.5% Cu	二长花岗斑岩、粉砂岩、砂岩	Cpy+Py+Po+Mo+Sph+Gal	锆石U-Pb:301.9±1.8	[31-32]
喇嘛苏	矽卡岩型Cu	0.6 Mt Cu	0.3%~ 6.3% Cu	花岗闪长斑岩、碳酸盐岩地层	Po+Mag+Cpy+Py+Sph+Mo	锆石U-Pb:(366.0±3.0)~(390.5±7.7) 石榴子石U-Pb:(389.4±2.0) ~(387.1±2.3)	[4,11,14?-16], 本次工作
达巴特	斑岩型 Cu-Mo	52 kt Cu, 5.6 t Mo	0.67% Cu	流纹斑岩、花岗斑岩、凝灰岩、砂岩	Cpy+Asp+Bo+Sph+Mo	锆石U-Pb:297.3±8.0 辉钼矿Re-Os:299.6±3.2	[33]
恰尔巴赫特	斑岩型 Cu-Mo	n/a	n/a	闪长岩、花岗闪长岩	Cpy+Mo+Cc+Py	锆石U-Pb:368.0±5.0、354.0±4.0	[34]
色勒特果勒	矽卡岩型 Cu-Mo	14 kt Cu, 357 t Mo	0.12%~ 2.02%Cu, 0.01%~ 0.1% Mo	闪长(玢)岩	Cpy+Bo+Mo+Cc+Py+Po	锆石U-Pb:301.8±2.9、302.4±2.6 辉钼矿Re-Os:301.0±2.0	[35]
莱历斯高尔	斑岩型 Cu-Mo	2 kt Cu 707 t Mo	2%Cu, 0.01%~ 0.2% Mo	花岗闪长斑岩、砂岩、粉砂岩	Mo+Py+Po+ Cpy	锆石U-Pb:374.0±4.0 辉钼矿Re-Os:372.5±5.0	[36-37]
3571	斑岩型Cu	2 kt Cu	n/a	花岗闪长斑岩	Cpy+Py+Po	锆石U-Pb:350.0±0.7、354.0±0.7	[38-39]
肯登高尔	矽卡岩型 Cu-Mo	19 kt Cu, 1 kt Mo	0.6%~ 1.2% Cu, 0.04%~ 0.3% Mo	花岗闪长岩、灰岩、粉砂岩	Cpy+Mo+Py+Bo+Po	锆石U-Pb:313.0±4.0、316.3±3.5 辉钼矿Re-Os:313.9±2.5	[40?-42]
109	斑岩型Cu	6.4 kt Cu	0.8% Cu	钠长斑岩	Cpy+Bo+Py	锆石U-Pb:300.0±4.0	[43]
哈勒尕提	矽卡岩型 Cu-Fe	n/a	n/a	二长花岗岩、碳酸盐岩地层	Cpy+Bo+Cc+Mag+Mo	锆石U-Pb:367.3±2.2、 368.0±2.0 辉钼矿Re-Os:370.1±2.4	[44-45]
莫斯早特	斑岩型Cu	n/a	n/a	钠长斑岩	Cpy+Bo+Cpy+Py	云母Ar-Ar:268.0±5.0	[46]
阔库确科	矽卡岩型Cu	n/a	n/a	花岗岩	Mag+Hem+ Cpy+Gal+Sph	锆石U-Pb:362.3±2.8	[47]
可克萨拉	矽卡岩型 Fe-Cu	n/a	n/a	二长花岗岩	Mag+Cpy+Py	辉钼矿Re-Os:288.3±1.5	[48]
克峡希	斑岩型Cu	51 kt Cu	0.48% Cu	闪长(玢)岩、花岗闪长岩	Cpy+Py+Sph+Gal	锆石U-Pb:357.2±3.0、356.4±2.2、350.8±3.8、348.0±2.2	[49]

矿床名称	类型	金属量	品位	赋矿围岩	金属矿物	年龄(Ma)	参考文献
科克赛	斑岩型 Cu-Mo	27 kt Cu	0.2%~ 0.5% Cu	二长花岗斑岩、粉砂岩、砂岩	Cpy+Py+Po+Mo+Sph+Gal	锆石U-Pb:301.9±1.8	[31-32]
喇嘛苏	矽卡岩型Cu	0.6 Mt Cu	0.3%~ 6.3% Cu	花岗闪长斑岩、碳酸盐岩地层	Po+Mag+Cpy+Py+Sph+Mo	锆石U-Pb:(366.0±3.0)~(390.5±7.7) 石榴子石U-Pb:(389.4±2.0) ~(387.1±2.3)	[4,11,14?-16], 本次工作
达巴特	斑岩型 Cu-Mo	52 kt Cu, 5.6 t Mo	0.67% Cu	流纹斑岩、花岗斑岩、凝灰岩、砂岩	Cpy+Asp+Bo+Sph+Mo	锆石U-Pb:297.3±8.0 辉钼矿Re-Os:299.6±3.2	[33]
恰尔巴赫特	斑岩型 Cu-Mo	n/a	n/a	闪长岩、花岗闪长岩	Cpy+Mo+Cc+Py	锆石U-Pb:368.0±5.0、354.0±4.0	[34]
色勒特果勒	矽卡岩型 Cu-Mo	14 kt Cu, 357 t Mo	0.12%~ 2.02%Cu, 0.01%~ 0.1% Mo	闪长(玢)岩	Cpy+Bo+Mo+Cc+Py+Po	锆石U-Pb:301.8±2.9、302.4±2.6 辉钼矿Re-Os:301.0±2.0	[35]
莱历斯高尔	斑岩型 Cu-Mo	2 kt Cu 707 t Mo	2%Cu, 0.01%~ 0.2% Mo	花岗闪长斑岩、砂岩、粉砂岩	Mo+Py+Po+ Cpy	锆石U-Pb:374.0±4.0 辉钼矿Re-Os:372.5±5.0	[36-37]
3571	斑岩型Cu	2 kt Cu	n/a	花岗闪长斑岩	Cpy+Py+Po	锆石U-Pb:350.0±0.7、354.0±0.7	[38-39]
肯登高尔	矽卡岩型 Cu-Mo	19 kt Cu, 1 kt Mo	0.6%~ 1.2% Cu, 0.04%~ 0.3% Mo	花岗闪长岩、灰岩、粉砂岩	Cpy+Mo+Py+Bo+Po	锆石U-Pb:313.0±4.0、316.3±3.5 辉钼矿Re-Os:313.9±2.5	[40?-42]
109	斑岩型Cu	6.4 kt Cu	0.8% Cu	钠长斑岩	Cpy+Bo+Py	锆石U-Pb:300.0±4.0	[43]
哈勒尕提	矽卡岩型 Cu-Fe	n/a	n/a	二长花岗岩、碳酸盐岩地层	Cpy+Bo+Cc+Mag+Mo	锆石U-Pb:367.3±2.2、 368.0±2.0 辉钼矿Re-Os:370.1±2.4	[44-45]
莫斯早特	斑岩型Cu	n/a	n/a	钠长斑岩	Cpy+Bo+Cpy+Py	云母Ar-Ar:268.0±5.0	[46]
阔库确科	矽卡岩型Cu	n/a	n/a	花岗岩	Mag+Hem+ Cpy+Gal+Sph	锆石U-Pb:362.3±2.8	[47]
可克萨拉	矽卡岩型 Fe-Cu	n/a	n/a	二长花岗岩	Mag+Cpy+Py	辉钼矿Re-Os:288.3±1.5	[48]
克峡希	斑岩型Cu	51 kt Cu	0.48% Cu	闪长(玢)岩、花岗闪长岩	Cpy+Py+Sph+Gal	锆石U-Pb:357.2±3.0、356.4±2.2、350.8±3.8、348.0±2.2	[49]

样号	TiO₂	CaO	K₂O	P₂O₅	NiO	Na₂O	MgO	SiO₂	Al₂O₃	MnO	FeO	Cr₂O₃	Total	Ura	And	Pyr	Spe	Gro
XS-54-1.1	0.14	35.46	0	0	0.01	0	0.19	36.77	6.81	0.12	19.43	0.02	98.95	0.05	63.49	0.73	0.27	35.46
XS-54-1.2	0.01	34.13	0.01	0.03	0	0.06	0.06	35.90	2.64	0.08	24.92	0.05	97.90	0.15	85.09	0.24	0.19	14.33
XS-54-1.3	0	34.93	0	0.04	0.01	0.02	0.04	36.55	6.19	0.13	20.91	0	98.82	0	69.77	0.17	0.28	29.77
XS-54-1.4	0	34.36	0.04	0.02	0	0.06	0.13	36.43	5.62	0.11	21.49	0.01	98.27	0.04	72.69	0.51	0.24	26.52
XS-54-1.5	0.02	34.52	0	0.03	0	0.03	0.04	36.37	6.13	0.15	20.84	0.02	98.15	0.07	70.32	0.18	0.33	29.10
XS-54-1.6	0.01	34.32	0	0	0	0.02	0.02	36.27	6.71	0.20	20.55	0.03	98.14	0.11	68.05	0.10	0.45	30.54
XS-54-1.7	0	35.03	0	0.03	0.03	0	0.02	35.94	4.53	0.13	23.18	0.01	98.90	0.04	77.17	0.08	0.30	22.40
XS-54-1.8	0	34.25	0.02	0.03	0	0.01	0.01	36.39	5.16	0.16	22.41	0	98.42	0	75.35	0.02	0.35	23.85
XS-54-1.9	0.02	33.78	0.02	0.04	0.01	0	0.03	37.04	5.90	0.18	21.68	0	98.70	0	71.72	0.11	0.42	26.41
XS-54-1.10	0.02	34.56	0.01	0	0	0.02	0.03	36.80	6.16	0.17	21.08	0.01	98.87	0.04	70.74	0.11	0.40	28.57
XS-54-1.11	0.01	33.99	0.01	0.01	0.03	0.03	0.05	35.95	3.12	0.16	24.83	0	98.17	0	84.96	0.22	0.37	14.44
XS-54-1.12	0	33.73	0	0	0	0.02	0.05	36.33	3.71	0.15	24.31	0	98.31	0	82.08	0.20	0.36	16.58
XS-54-1.13	0	34.20	0.01	0.01	0	0.03	0.01	36.73	6.33	0.18	20.74	0.01	98.23	0.02	69.72	0.03	0.41	29.38
XS-54-1.14	0.03	34.18	0	0	0.02	0.01	0.03	36.60	5.54	0.14	21.73	0	98.26	0	73.45	0.10	0.31	25.83
XS-54-1.15	0.06	34.70	0	0	0.02	0	0.03	36.30	6.75	0.17	20.13	0.01	98.16	0.03	67.58	0.12	0.39	31.88
样号	TiO₂	CaO	K₂O	P₂O₅	NiO	Na₂O	MgO	SiO₂	Al₂O₃	MnO	FeO	Cr₂O₃	Total	Ura	And	Pyr	Spe	Gro
XS-38-1.1	0.58	34.98	0.04	0.04	0	0.02	0.73	36.44	7.36	0.28	17.62	0.01	98.10	0.04	56.96	2.79	0.60	39.61
XS-38-1.2	0.49	33.73	0.02	0	0	0.05	0.60	35.45	8.33	0.26	16.49	2.75	98.15	8.61	52.46	2.35	0.57	34.51
XS-38-1.3	0.19	35.02	0.01	0.01	0.02	0	0.66	37.50	8.35	0.35	17.29	0	99.41	0.01	55.88	2.55	0.77	40.79
XS-38-1.4	0.07	35.08	0	0.02	0.04	0	0.62	37.98	8.04	0.36	17.95	0.02	100.16	0.05	58.02	2.37	0.77	38.78
XS-38-1.5	0.03	34.69	0	0.01	0	0.01	0.54	36.66	7.14	0.39	18.89	0.06	98.40	0.20	61.88	2.10	0.86	34.97
XS-38-1.6	0	35.15	0.01	0.01	0	0.01	0.52	37.51	9.78	0.32	16.48	0.01	99.79	0.04	53.41	2.01	0.70	43.85
XS-38-1.7	0.04	35.17	0.02	0.04	0	0.02	0.36	37.35	7.35	0.17	18.84	0.02	99.37	0.06	61.64	1.39	0.36	36.55
XS-38-1.8	0	35.07	0	0.02	0	0.07	0.28	37.73	6.75	0.20	19.67	0.01	99.79	0.02	64.67	1.07	0.45	33.79
XS-38-1.9	0	35.09	0.01	0.03	0	0.03	0.40	37.59	7.01	0.19	19.11	0	99.46	0	62.52	1.55	0.41	35.51
XS-38-1.10	0.05	34.99	0	0	0	0.02	0.26	37.19	6.24	0.20	20.03	0	98.98	0	66.07	1.01	0.44	32.48
XS-38-1.11	0.13	34.95	0	0.06	0.02	0.03	0.21	36.87	5.87	0.22	20.67	0.04	99.05	0.13	68.31	0.82	0.50	30.24
XS-38-1.12	0.01	34.82	0.01	0.02	0.01	0.01	0.23	36.41	4.59	0.18	22.54	0.03	98.87	0.10	74.80	0.91	0.40	23.79
样号	TiO₂	CaO	K₂O	P₂O₅	NiO	Na₂O	MgO	SiO₂	Al₂O₃	MnO	FeO	Cr₂O₃	Total	Ura	And	Pyr	Spe	Gro
XS-62-1.1	0.27	34.54	0	0	0	0.02	0.18	36.94	6.91	0.22	19.35	0.03	98.45	0.09	64.79	0.70	0.50	33.92
XS-62-1.2	0.38	34.58	0.02	0.01	0	0.01	0.35	36.61	7.42	0.25	18.48	0.01	98.13	0.02	61.35	1.37	0.57	36.68
XS-62-1.3	0.17	34.37	0.02	0.03	0.02	0.01	0.09	36.54	4.95	0.19	22.17	0	98.53	0	74.95	0.34	0.43	24.28
XS-62-1.4	0.33	34.90	0	0.03	0	0.03	0.24	36.89	6.08	0.15	20.08	0	98.74	0	66.49	0.94	0.34	32.24
XS-62-1.5	0.15	34.65	0.01	0	0	0	0.27	36.84	5.35	0.14	21.03	0.02	98.47	0.07	70.09	1.06	0.32	28.46
XS-62-1.6	0.50	34.57	0.01	0.04	0	0.04	0.28	36.52	6.12	0.18	20.09	0	98.35	0.01	67.02	1.11	0.41	31.46
XS-62-1.7	0.29	34.90	0	0.02	0.03	0	0.29	36.62	6.25	0.18	19.69	0.01	98.28	0.04	65.04	1.12	0.40	33.40
XS-62-1.8	0.36	34.87	0	0	0	0	0.25	37.05	6.67	0.21	19.52	0.01	98.93	0.04	64.61	0.97	0.46	33.92
XS-62-1.9	0.23	35.02	0.03	0.03	0.03	0	0.32	36.54	6.38	0.20	19.60	0	98.37	0	64.40	1.25	0.44	33.91
XS-62-1.10	0.31	34.61	0.01	0.01	0.01	0.01	0.25	36.67	6.00	0.18	20.03	0	98.08	0	66.79	1.01	0.41	31.79
XS-62-1.11	0.38	34.63	0.01	0.01	0.01	0.05	0.30	36.47	5.90	0.16	20.09	0.01	98.02	0.03	66.88	1.18	0.37	31.54
XS-62-1.12	0.36	34.63	0.01	0.03	0.03	0.02	0.24	36.30	5.31	0.21	20.95	0	98.09	0	69.83	0.95	0.47	28.75
XS-62-1.13	0.31	34.99	0.01	0.02	0	0	0.23	36.83	5.36	0.20	21.21	0	99.16	0	70.01	0.92	0.44	28.63
XS-62-1.14	0.19	34.68	0.02	0	0	0.01	0.17	36.61	6.39	0.24	19.97	0.01	98.29	0.03	66.59	0.69	0.54	32.15
XS-62-1.15	0.14	34.68	0	0.03	0	0	0.13	36.66	5.75	0.18	20.91	0	98.49	0	69.94	0.53	0.41	29.12

样号	TiO₂	CaO	K₂O	P₂O₅	NiO	Na₂O	MgO	SiO₂	Al₂O₃	MnO	FeO	Cr₂O₃	Total	Ura	And	Pyr	Spe	Gro
XS-54-1.1	0.14	35.46	0	0	0.01	0	0.19	36.77	6.81	0.12	19.43	0.02	98.95	0.05	63.49	0.73	0.27	35.46
XS-54-1.2	0.01	34.13	0.01	0.03	0	0.06	0.06	35.90	2.64	0.08	24.92	0.05	97.90	0.15	85.09	0.24	0.19	14.33
XS-54-1.3	0	34.93	0	0.04	0.01	0.02	0.04	36.55	6.19	0.13	20.91	0	98.82	0	69.77	0.17	0.28	29.77
XS-54-1.4	0	34.36	0.04	0.02	0	0.06	0.13	36.43	5.62	0.11	21.49	0.01	98.27	0.04	72.69	0.51	0.24	26.52
XS-54-1.5	0.02	34.52	0	0.03	0	0.03	0.04	36.37	6.13	0.15	20.84	0.02	98.15	0.07	70.32	0.18	0.33	29.10
XS-54-1.6	0.01	34.32	0	0	0	0.02	0.02	36.27	6.71	0.20	20.55	0.03	98.14	0.11	68.05	0.10	0.45	30.54
XS-54-1.7	0	35.03	0	0.03	0.03	0	0.02	35.94	4.53	0.13	23.18	0.01	98.90	0.04	77.17	0.08	0.30	22.40
XS-54-1.8	0	34.25	0.02	0.03	0	0.01	0.01	36.39	5.16	0.16	22.41	0	98.42	0	75.35	0.02	0.35	23.85
XS-54-1.9	0.02	33.78	0.02	0.04	0.01	0	0.03	37.04	5.90	0.18	21.68	0	98.70	0	71.72	0.11	0.42	26.41
XS-54-1.10	0.02	34.56	0.01	0	0	0.02	0.03	36.80	6.16	0.17	21.08	0.01	98.87	0.04	70.74	0.11	0.40	28.57
XS-54-1.11	0.01	33.99	0.01	0.01	0.03	0.03	0.05	35.95	3.12	0.16	24.83	0	98.17	0	84.96	0.22	0.37	14.44
XS-54-1.12	0	33.73	0	0	0	0.02	0.05	36.33	3.71	0.15	24.31	0	98.31	0	82.08	0.20	0.36	16.58
XS-54-1.13	0	34.20	0.01	0.01	0	0.03	0.01	36.73	6.33	0.18	20.74	0.01	98.23	0.02	69.72	0.03	0.41	29.38
XS-54-1.14	0.03	34.18	0	0	0.02	0.01	0.03	36.60	5.54	0.14	21.73	0	98.26	0	73.45	0.10	0.31	25.83
XS-54-1.15	0.06	34.70	0	0	0.02	0	0.03	36.30	6.75	0.17	20.13	0.01	98.16	0.03	67.58	0.12	0.39	31.88
样号	TiO₂	CaO	K₂O	P₂O₅	NiO	Na₂O	MgO	SiO₂	Al₂O₃	MnO	FeO	Cr₂O₃	Total	Ura	And	Pyr	Spe	Gro
XS-38-1.1	0.58	34.98	0.04	0.04	0	0.02	0.73	36.44	7.36	0.28	17.62	0.01	98.10	0.04	56.96	2.79	0.60	39.61
XS-38-1.2	0.49	33.73	0.02	0	0	0.05	0.60	35.45	8.33	0.26	16.49	2.75	98.15	8.61	52.46	2.35	0.57	34.51
XS-38-1.3	0.19	35.02	0.01	0.01	0.02	0	0.66	37.50	8.35	0.35	17.29	0	99.41	0.01	55.88	2.55	0.77	40.79
XS-38-1.4	0.07	35.08	0	0.02	0.04	0	0.62	37.98	8.04	0.36	17.95	0.02	100.16	0.05	58.02	2.37	0.77	38.78
XS-38-1.5	0.03	34.69	0	0.01	0	0.01	0.54	36.66	7.14	0.39	18.89	0.06	98.40	0.20	61.88	2.10	0.86	34.97
XS-38-1.6	0	35.15	0.01	0.01	0	0.01	0.52	37.51	9.78	0.32	16.48	0.01	99.79	0.04	53.41	2.01	0.70	43.85
XS-38-1.7	0.04	35.17	0.02	0.04	0	0.02	0.36	37.35	7.35	0.17	18.84	0.02	99.37	0.06	61.64	1.39	0.36	36.55
XS-38-1.8	0	35.07	0	0.02	0	0.07	0.28	37.73	6.75	0.20	19.67	0.01	99.79	0.02	64.67	1.07	0.45	33.79
XS-38-1.9	0	35.09	0.01	0.03	0	0.03	0.40	37.59	7.01	0.19	19.11	0	99.46	0	62.52	1.55	0.41	35.51
XS-38-1.10	0.05	34.99	0	0	0	0.02	0.26	37.19	6.24	0.20	20.03	0	98.98	0	66.07	1.01	0.44	32.48
XS-38-1.11	0.13	34.95	0	0.06	0.02	0.03	0.21	36.87	5.87	0.22	20.67	0.04	99.05	0.13	68.31	0.82	0.50	30.24
XS-38-1.12	0.01	34.82	0.01	0.02	0.01	0.01	0.23	36.41	4.59	0.18	22.54	0.03	98.87	0.10	74.80	0.91	0.40	23.79
样号	TiO₂	CaO	K₂O	P₂O₅	NiO	Na₂O	MgO	SiO₂	Al₂O₃	MnO	FeO	Cr₂O₃	Total	Ura	And	Pyr	Spe	Gro
XS-62-1.1	0.27	34.54	0	0	0	0.02	0.18	36.94	6.91	0.22	19.35	0.03	98.45	0.09	64.79	0.70	0.50	33.92
XS-62-1.2	0.38	34.58	0.02	0.01	0	0.01	0.35	36.61	7.42	0.25	18.48	0.01	98.13	0.02	61.35	1.37	0.57	36.68
XS-62-1.3	0.17	34.37	0.02	0.03	0.02	0.01	0.09	36.54	4.95	0.19	22.17	0	98.53	0	74.95	0.34	0.43	24.28
XS-62-1.4	0.33	34.90	0	0.03	0	0.03	0.24	36.89	6.08	0.15	20.08	0	98.74	0	66.49	0.94	0.34	32.24
XS-62-1.5	0.15	34.65	0.01	0	0	0	0.27	36.84	5.35	0.14	21.03	0.02	98.47	0.07	70.09	1.06	0.32	28.46
XS-62-1.6	0.50	34.57	0.01	0.04	0	0.04	0.28	36.52	6.12	0.18	20.09	0	98.35	0.01	67.02	1.11	0.41	31.46
XS-62-1.7	0.29	34.90	0	0.02	0.03	0	0.29	36.62	6.25	0.18	19.69	0.01	98.28	0.04	65.04	1.12	0.40	33.40
XS-62-1.8	0.36	34.87	0	0	0	0	0.25	37.05	6.67	0.21	19.52	0.01	98.93	0.04	64.61	0.97	0.46	33.92
XS-62-1.9	0.23	35.02	0.03	0.03	0.03	0	0.32	36.54	6.38	0.20	19.60	0	98.37	0	64.40	1.25	0.44	33.91
XS-62-1.10	0.31	34.61	0.01	0.01	0.01	0.01	0.25	36.67	6.00	0.18	20.03	0	98.08	0	66.79	1.01	0.41	31.79
XS-62-1.11	0.38	34.63	0.01	0.01	0.01	0.05	0.30	36.47	5.90	0.16	20.09	0.01	98.02	0.03	66.88	1.18	0.37	31.54
XS-62-1.12	0.36	34.63	0.01	0.03	0.03	0.02	0.24	36.30	5.31	0.21	20.95	0	98.09	0	69.83	0.95	0.47	28.75
XS-62-1.13	0.31	34.99	0.01	0.02	0	0	0.23	36.83	5.36	0.20	21.21	0	99.16	0	70.01	0.92	0.44	28.63
XS-62-1.14	0.19	34.68	0.02	0	0	0.01	0.17	36.61	6.39	0.24	19.97	0.01	98.29	0.03	66.59	0.69	0.54	32.15
XS-62-1.15	0.14	34.68	0	0.03	0	0	0.13	36.66	5.75	0.18	20.91	0	98.49	0	69.94	0.53	0.41	29.12

测点编号	U (10^-6)	Th (10^-6)	同位素比值						年龄(Ma)
测点编号	U (10^-6)	Th (10^-6)	²⁰⁷Pb/²⁰⁶Pb	1σ	²⁰⁷Pb/²³⁵U	1σ	²⁰⁶Pb/²³⁸U	1σ	²⁰⁶Pb/²³⁸U	1σ
XS-38-1.01	2.19	3.91	0.10624	0.00480	0.97423	0.04483	0.06701	0.00100	418.1	6.1
XS-38-1.02	2.80	3.03	0.06128	0.00281	0.52662	0.02345	0.06294	0.00074	393.5	4.5
XS-38-1.03	2.75	4.72	0.06566	0.00273	0.55335	0.02293	0.06154	0.00065	385.0	4.0
XS-38-1.04	3.15	5.49	0.06828	0.00245	0.57845	0.02025	0.06212	0.00073	388.5	4.4
XS-38-1.05	3.24	5.02	0.08470	0.00330	0.74906	0.02955	0.06397	0.00069	399.7	4.2
XS-38-1.06	2.44	5.00	0.06519	0.00317	0.57318	0.02722	0.06473	0.00085	404.4	5.1
XS-38-1.07	3.70	7.28	0.05967	0.00287	0.51385	0.02558	0.06206	0.00071	388.2	4.3
XS-38-1.08	2.35	4.53	0.07744	0.00435	0.68068	0.03773	0.06494	0.00091	405.6	5.5
XS-38-1.09	2.48	2.74	0.07557	0.00377	0.66296	0.03280	0.06428	0.00081	401.6	4.9
XS-38-1.10	3.23	4.52	0.05417	0.00229	0.46372	0.02007	0.06204	0.00078	388.0	4.7
XS-38-1.11	1.83	2.77	0.08526	0.00434	0.74076	0.03684	0.06421	0.00103	401.2	6.3
XS-38-1.12	3.31	6.89	0.06030	0.00254	0.51765	0.02181	0.06267	0.00080	391.8	4.8
XS-38-1.13	3.13	6.24	0.06132	0.00282	0.52011	0.02439	0.06128	0.00072	383.4	4.4
XS-38-1.14	1.94	1.19	0.05189	0.00349	0.43832	0.02802	0.06241	0.00112	390.3	6.8
XS-38-1.15	1.62	1.74	0.05419	0.00419	0.46815	0.03577	0.06299	0.00102	393.8	6.2
XS-38-1.16	1.75	1.80	0.06194	0.00377	0.51189	0.02956	0.06213	0.00101	388.6	6.1
XS-38-1.17	1.46	1.45	0.08986	0.00476	0.80177	0.04398	0.06482	0.00101	404.9	6.1
XS-38-1.18	3.19	5.81	0.06305	0.00313	0.53526	0.02502	0.06260	0.00079	391.4	4.8
XS-38-1.19	2.42	2.85	0.09605	0.00409	0.85978	0.03448	0.06646	0.00090	414.8	5.4
XS-38-1.20	3.38	4.55	0.06258	0.00327	0.52593	0.02596	0.06221	0.00084	389.1	5.1
XS-38-1.21	2.25	2.57	0.06831	0.00368	0.60775	0.03253	0.06533	0.00101	407.9	6.1
XS-38-1.22	3.31	4.77	0.05589	0.00222	0.46966	0.01864	0.06153	0.00070	384.9	4.3
XS-38-1.23	2.60	4.06	0.05267	0.00312	0.45368	0.02802	0.06272	0.00091	392.1	5.5
XS-38-1.24	3.72	5.30	0.05884	0.00269	0.49249	0.02175	0.06172	0.00074	386.1	4.5
XS-38-1.25	1.94	1.50	0.07121	0.00404	0.61265	0.03637	0.06285	0.00102	392.9	6.2
XS-38-1.26	1.24	1.75	0.17668	0.00756	1.68913	0.06862	0.07165	0.00130	446.1	7.8
XS-38-1.27	1.20	1.14	0.11446	0.00599	1.02963	0.05306	0.06642	0.00113	414.6	6.8
XS-38-1.28	1.53	2.01	0.07636	0.00448	0.68303	0.03923	0.06459	0.00123	403.5	7.5
XS-38-1.29	2.44	2.83	0.06786	0.00317	0.56899	0.02615	0.06158	0.00086	385.2	5.2
XS-38-1.30	1.22	1.24	0.07836	0.00510	0.67218	0.04258	0.06494	0.00105	405.6	6.4
XS-38-1.31	1.14	1.10	0.05936	0.00445	0.49490	0.03659	0.06230	0.00132	389.6	8.0
XS-38-1.32	1.39	2.56	0.06900	0.00499	0.56854	0.04116	0.06170	0.00129	385.9	7.9
XS-38-1.33	1.41	1.74	0.12310	0.00716	1.14046	0.07416	0.06772	0.00135	422.4	8.1
XS-38-1.34	1.63	2.31	0.09456	0.00497	0.84240	0.04268	0.06550	0.00109	409.0	6.6
XS-38-1.35	1.09	1.06	0.06083	0.00524	0.49798	0.03829	0.06252	0.00118	390.9	7.2
XS-38-1.36	2.26	3.00	0.06973	0.00354	0.58730	0.02807	0.06270	0.00096	392.1	5.8
XS-38-1.37	1.24	1.66	0.06121	0.00391	0.50920	0.03089	0.06290	0.00109	393.3	6.6
XS-38-1.38	1.27	1.65	0.07313	0.00513	0.62032	0.04162	0.06331	0.00123	395.7	7.5
XS-38-1.39	3.34	6.25	0.06098	0.00261	0.51366	0.02136	0.06177	0.00074	386.4	4.5
XS-38-1.40	2.21	2.61	0.09676	0.00428	0.86014	0.03896	0.06470	0.00095	404.1	5.8
XS-54-1.01	1.52	3.49	0.06295	0.00512	0.54913	0.04506	0.06278	0.00125	392.5	7.6
XS-54-1.02	1.48	3.41	0.06639	0.00648	0.52988	0.04653	0.06252	0.00128	390.9	7.8
XS-54-1.03	3.27	8.10	0.05836	0.00456	0.48594	0.03473	0.06225	0.00115	389.3	7.0
XS-54-1.04	3.33	5.34	0.05602	0.00328	0.46072	0.02395	0.06208	0.00088	388.3	5.3
XS-54-1.05	2.23	5.42	0.05689	0.00437	0.47801	0.03590	0.06264	0.00122	391.7	7.4
XS-54-1.06	2.11	4.46	0.05277	0.00568	0.42636	0.04360	0.06283	0.00135	392.8	8.2
XS-54-1.07	1.99	4.83	0.05751	0.00524	0.47738	0.04164	0.06318	0.00141	394.9	8.6
XS-54-1.08	1.98	2.95	0.05224	0.00405	0.45241	0.03341	0.06441	0.00115	402.4	7.0
XS-54-1.09	2.93	5.81	0.06024	0.00303	0.50420	0.02451	0.06216	0.00083	388.7	5.1
XS-54-1.10	2.45	6.05	0.06469	0.00386	0.54619	0.02999	0.06354	0.00098	397.1	5.9
XS-54-1.11	1.46	5.24	0.06358	0.00445	0.56505	0.03880	0.06566	0.00121	409.9	7.3
XS-54-1.12	4.93	2.91	0.05681	0.00388	0.47783	0.03157	0.06199	0.00090	387.7	5.5
XS-54-1.13	1.84	4.79	0.06082	0.00460	0.50035	0.03558	0.06203	0.00120	388.0	7.3
XS-54-1.14	7.02	1.57	0.05569	0.00207	0.47990	0.01857	0.06225	0.00080	389.3	4.8
XS-54-1.15	1.22	3.40	0.06581	0.00685	0.50882	0.05037	0.06243	0.00148	390.4	9.0
XS-54-1.16	2.72	5.19	0.06941	0.00434	0.59009	0.03505	0.06367	0.00103	397.9	6.3
XS-54-1.17	3.59	3.69	0.06013	0.00290	0.50224	0.02349	0.06155	0.00081	385.0	4.9
XS-54-1.18	2.53	7.51	0.04847	0.00419	0.42698	0.04255	0.06336	0.00135	396.0	8.2
XS-54-1.19	3.41	9.53	0.06071	0.00446	0.51259	0.03532	0.06199	0.00107	387.7	6.5
XS-54-1.20	3.22	8.36	0.06067	0.00284	0.51314	0.02324	0.06250	0.00092	390.8	5.6
XS-54-1.21	1.79	5.78	0.08202	0.00507	0.68648	0.04289	0.06293	0.00119	393.4	7.2
XS-54-1.22	2.04	1.91	0.05567	0.00362	0.49172	0.03220	0.06396	0.00113	399.6	6.8
XS-54-1.23	2.29	5.58	0.05767	0.00320	0.49582	0.02742	0.06324	0.00110	395.3	6.6
XS-54-1.24	2.27	5.69	0.05455	0.00390	0.45684	0.03138	0.06235	0.00115	389.9	7.0
XS-54-1.25	3.62	3.23	0.06062	0.00283	0.50671	0.02344	0.06128	0.00086	383.4	5.2
XS-54-1.26	2.36	4.63	0.05907	0.00303	0.49275	0.02523	0.06192	0.00097	387.3	5.9
XS-54-1.27	2.07	4.26	0.05759	0.00397	0.47776	0.03053	0.06219	0.00117	388.9	7.1
XS-54-1.28	2.45	5.93	0.06426	0.00342	0.54446	0.02849	0.06257	0.00095	391.2	5.8
XS-54-1.29	1.80	5.22	0.05363	0.00412	0.44685	0.03485	0.06163	0.00116	385.6	7.0
XS-54-1.30	1.99	4.84	0.07597	0.00451	0.65705	0.03805	0.06372	0.00118	398.2	7.1
XS-54-1.31	2.62	3.85	0.05840	0.00312	0.48407	0.02437	0.06161	0.00089	385.4	5.4
XS-54-1.32	2.68	2.54	0.06000	0.00327	0.50785	0.02670	0.06225	0.00086	389.3	5.2
XS-54-1.33	2.57	5.39	0.05539	0.00318	0.47651	0.02679	0.06278	0.00096	392.5	5.8
XS-54-1.34	2.35	3.29	0.05937	0.00306	0.50877	0.02552	0.06423	0.00095	401.3	5.8
XS-54-1.35	2.39	3.33	0.06459	0.00353	0.57482	0.03093	0.06531	0.00106	407.8	6.4
XS-54-1.36	3.35	3.82	0.05402	0.00249	0.46237	0.02088	0.06290	0.00082	393.2	5.0
XS-54-1.37	1.94	3.54	0.07644	0.00494	0.65284	0.04043	0.06296	0.00118	393.6	7.1
XS-54-1.38	2.71	7.07	0.06277	0.00336	0.52973	0.02739	0.06270	0.00088	392.0	5.4
XS-54-1.39	2.97	6.81	0.05691	0.00295	0.47920	0.02336	0.06263	0.00087	391.6	5.3
XS-54-1.40	2.18	3.13	0.05545	0.00331	0.45842	0.02612	0.06169	0.00096	385.9	5.8
XS-62-1.01	1.07	0.844	0.12666	0.00781	1.15680	0.07238	0.06711	0.00128	418.7	7.7
XS-62-1.02	1.59	1.60	0.06332	0.00398	0.54015	0.03375	0.06189	0.00107	387.1	6.5
XS-62-1.03	3.01	3.05	0.05879	0.00288	0.49456	0.02356	0.06153	0.00078	384.9	4.7
XS-62-1.04	2.83	3.95	0.06634	0.00305	0.56131	0.02488	0.06196	0.00091	387.5	5.5
XS-62-1.05	1.99	4.83	0.21446	0.00878	2.31909	0.10343	0.07828	0.00133	485.9	7.9
XS-62-1.06	2.18	2.97	0.05839	0.00359	0.49896	0.03034	0.06313	0.00108	394.6	6.5
XS-62-1.07	1.88	2.73	0.06590	0.00420	0.54229	0.03140	0.06168	0.00115	385.8	7.0
XS-62-1.08	1.86	1.86	0.08128	0.00508	0.71451	0.04295	0.06426	0.00105	401.5	6.4
XS-62-1.09	1.61	1.75	0.08303	0.00506	0.72110	0.04231	0.06436	0.00106	402.1	6.4
XS-62-1.10	2.26	4.83	0.06103	0.00366	0.50822	0.02856	0.06167	0.00096	385.7	5.8
XS-62-1.11	2.50	4.97	0.05937	0.00309	0.50175	0.02609	0.06178	0.00090	386.4	5.5
XS-62-1.12	1.37	2.30	0.07325	0.00705	0.62411	0.05591	0.06307	0.00139	394.3	8.4
XS-62-1.13	1.42	1.85	0.06364	0.00462	0.53488	0.03834	0.06252	0.00104	390.9	6.3
XS-62-1.14	2.09	2.85	0.06428	0.00538	0.54958	0.04464	0.06259	0.00110	391.3	6.7
XS-62-1.15	2.06	4.19	0.05832	0.00343	0.48790	0.02767	0.06223	0.00099	389.1	6.0
XS-62-1.16	2.39	4.73	0.06432	0.00352	0.55507	0.02988	0.06267	0.00083	391.8	5.0
XS-62-1.17	3.08	3.53	0.05922	0.00299	0.51907	0.02692	0.06332	0.00089	395.8	5.4
XS-62-1.18	1.30	1.36	0.32404	0.0109	4.12568	0.13862	0.09266	0.00174	571.2	10.3
XS-62-1.19	3.06	4.11	0.08861	0.00375	0.78347	0.03545	0.06377	0.00080	398.5	4.8
XS-62-1.20	1.78	2.36	0.06297	0.00399	0.55706	0.03583	0.06463	0.00111	403.8	6.7
XS-62-1.21	2.18	4.17	0.06638	0.00432	0.57582	0.03484	0.06328	0.00090	395.5	5.5
XS-62-1.22	1.76	2.94	0.06663	0.00386	0.56467	0.03118	0.06317	0.00105	394.9	6.4
XS-62-1.23	1.68	2.29	0.08251	0.00612	0.71499	0.05200	0.06413	0.00131	400.7	7.9
XS-62-1.24	2.98	2.82	0.07192	0.00405	0.63278	0.03700	0.06417	0.00098	400.9	5.9
XS-62-1.25	2.13	2.93	0.06245	0.00346	0.52860	0.02956	0.06212	0.00097	388.5	5.9
XS-62-1.26	1.24	1.21	0.07262	0.00532	0.60326	0.04030	0.06260	0.00124	391.4	7.5
XS-62-1.27	0.98	1.16	0.07518	0.00587	0.63310	0.04702	0.06483	0.00134	405.0	8.1
XS-62-1.28	2.17	3.13	0.06577	0.00372	0.55178	0.02977	0.06269	0.00106	392.0	6.4
XS-62-1.29	1.55	2.34	0.06100	0.00411	0.51550	0.03457	0.06294	0.00129	393.5	7.8
XS-62-1.30	1.99	3.22	0.09413	0.00480	0.84323	0.04424	0.06506	0.00098	406.3	5.9
XS-62-1.31	1.87	3.49	0.06415	0.00359	0.54576	0.03123	0.06225	0.00108	389.3	6.6
XS-62-1.32	1.90	3.04	0.07978	0.00426	0.69402	0.03675	0.06425	0.00105	401.4	6.4

新疆北部喇嘛苏铜矿床成矿时代与构造背景:来自石榴子石原位LA-ICP-MS U-Pb测年的证据

Geochronology and Tectonic Setting of the Lamasu Cu Deposit in Northern Xinjiang: Evidence from In-situ LA-ICP-MS Garnet U-Pb Dating

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