西苏门答腊实武牙地区晚三叠世花岗岩锆石年代学及其特提斯构造意义

余小清; 钱鑫; 卢向红; 徐畅; 张玉芝; 甘成势; 王岳军

doi:10.3799/dqkx.2021.039

西苏门答腊实武牙地区晚三叠世花岗岩锆石年代学及其特提斯构造意义

doi: 10.3799/dqkx.2021.039

余小清^{1, 2, ,},
钱鑫^{1, 2, ,},
卢向红^{1, 2},
徐畅^{1, 2},
张玉芝^{1, 2},
甘成势^{1, 2},
王岳军^{1, 2}

1.
中山大学地球科学与工程学院, 广东省地球动力作用与地质灾害重点实验室, 广东广州 510275
2.
南方海洋科学与工程广东省实验室, 广东珠海 519000

基金项目:

国家自然科学基金项目 41830211

国家自然科学基金项目 U1701641

国家自然科学基金项目 42072256

广东省基础与应用基础研究基金项目 2018B030312007

广东省基础与应用基础研究基金项目 2019B1515120019

南方海洋科学与工程广东省实验室（珠海）创新团队建设项目 311021002

详细信息

作者简介:
余小清(1994-), 女, 博士研究生, 地球化学专业. ORCID: 0000-0002-8573-5393. E-mail: yuxq9@mail2.sysu.edu.cn

通讯作者:
钱鑫, E-mail: qianx3@mail.sysu.edu.cn

中图分类号: P595
计量
- 文章访问数: 660
- HTML全文浏览量: 278
- PDF下载量: 39
- 被引次数: 0
出版历程
- 收稿日期: 2021-03-05
- 网络出版日期: 2021-09-14
- 刊出日期: 2021-08-15

Zircon U-Pb Geochronology of Late Triassic Granites from Sibolga Area in Western Sumatra and Its Tethyan Tectonic Implications

Yu Xiaoqing^{1, 2
,
,},
Qian Xin^{1, 2
, ,},
Lu Xianghong^{1, 2},
Xu Chang^{1, 2},
Zhang Yuzhi^{1, 2},
Gan Chengshi^{1, 2},
Wang Yuejun^{1, 2}

1.
Guangdong Provincial Key Lab of Geodynamics and Geohazards, School of Earth Sciences and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
2.
Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai 519000, China

摘要

摘要: 苏门答腊岛位于东特提斯构造域，沿该岛分布了大量不同时代和成因的花岗岩，但这些花岗岩的形成时代和延伸以及对比均未能得到很好的界定，也限制了对东南亚主要岩浆岩带延伸及其构造背景的理解.对西苏门答腊实武牙地区新识别出的花岗岩体开展了精细的LA-ICP-MS锆石U-Pb年代学研究.结果显示，3个花岗岩样品的锆石均为典型的岩浆成因，其岩浆年龄分别为215.1±2.4 Ma（MSWD=0.14）、206.1±5 Ma（MSWD=0.22）、214.3±5 Ma（MSWD=0.11），锆石年代学研究表明西苏门答腊存在晚三叠世的岩浆作用.对比东南亚花岗岩省内同期侵入岩认为，西苏门答腊实武牙地区的晚三叠世花岗岩可与东南亚西部花岗岩省进行对比和联系，该套晚三叠世花岗岩可能形成于中特提斯洋初始俯冲的弧后裂谷环境.
- 西苏门答腊 /
- 晚三叠世 /
- 花岗岩 /
- 锆石U-Pb年龄 /
- 地质年代学 /
- 东特提斯
Abstract: The Sumatra Island, located in the Tethyan tectonic domain, preserves abundant granitoids with various ages and petrogenesis. The paucity of precise geochronological data for these granitoids has hampered our understanding on the extension and tectonic setting of magmatic belts in Southeast Asia. Precise zircon U-Pb geochronological data for granites from the Sibolga area in western Sumatra are presented in this study. Our results suggest that zircon grains from these samples are of igneous origin. LA-ICP-MS zircon U-Pb dating yields crystallization ages of 215.1±2.4 Ma (MSWD=0.14), 206.1±5 Ma (MSWD=0.22) and 214.3±5 Ma (MSWD=0.11) for granites respectively, indicating the Late Triassic magmatism in western Sumatra. Comparing with those of contemporary igneous rocks in Southeast Asia, it proposes that the Late Triassic granites in the Sibolga area are consistent with the West Province granite. Therefore, these granites might be formed in a back-arc rift setting in response to the initial subduction of the Mesotethyan Ocean during the Late Triassic.
- western Sumatra /
- Late Triassic /
- granite /
- zircon U-Pb age /
- geochronology /
- eastern Tethys

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图 1 苏门答腊区域构造图(a)和采样区地质简图(b)

据Searle et al.（2012）、Lin et al.（2013）、Gardiner et al.（2016）和Zhang et al.（2020）修改. 前人数据据Li et al.（2020）和Zhang et al.（2020）；本文数据（1）为19SM-17花岗岩，（2）为19SM-25花岗岩，（3）为19SM-30花岗岩

Fig. 1. Regional tectonic map of Sumatra (a) and simplified geological map of sampling area (b)

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图 2 实武牙地区花岗岩显微照片

Qtz.石英；Pl.斜长石；Kfs.钾长石；Bt.黑云母；Zrn.锆石

Fig. 2. Photomicrographs of granites from the Sibolga area

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图 3 实武牙地区花岗岩锆石颗粒的阴极发光图像

圆圈表示原位U-Pb同位素的测试位置，蓝色圈代表捕获锆石，红色圈代表结晶锆石

Fig. 3. Cathodoluminescence (CL) images of zircon grains for granites from the Sibolga area

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图 4 实武牙地区花岗岩样品的锆石U-Pb谐和图、加权平均年龄图(a、c、e)和锆石稀土元素配分图(b、d、f)

Fig. 4. Zircon U-Pb concordia diagrams, weighted average diagrams (a, c, e) and chondrite-normalized REE patterns (b, d, f) for zircons from granites in the Sibolga area

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图 5 西苏门答腊和东南亚花岗岩省的晚三叠世岩浆岩年龄对比

苏门答腊岛的数据来自Cobbing（2005）、张海坤等（2017）、Li et al.（2020）和Zhang et al.（2020）；东南亚花岗岩省数据来自Barley et al.（2003）、Searle et al.（2012）、Wai-Pan Ng et al.（2015）、Gardiner et al.（2016）和Qian et al.（2017）

Fig. 5. Late Triassic igneous age comparison between West Sumatra and Southeast Asia granite provinces

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表 1 西苏门答腊实武牙地区晚三叠世花岗岩的锆石LA-ICP-MS U-Pb测试分析数据

Table 1. LA-ICP-MS zircon U-Pb analytical results for Late Triassic granites from the Sibolga area

样品号	元素含量(10^-6)		Th/U	同位素比值						年龄(Ma)						谐和度(%)
样品号	Th	U	Th/U	²⁰⁷Pb/²⁰⁶Pb	1σ	²⁰⁷Pb/²³⁵U	1σ	²⁰⁶Pb/²³⁸U	1σ	²⁰⁷Pb/²⁰⁶Pb	1σ	²⁰⁷Pb/²³⁵U	1σ	²⁰⁶Pb/²³⁸U	1σ	谐和度(%)
19SM-17-1-01	501	1 081	0.46	0.051 26	0.001 86	0.240 82	0.009 25	0.034 10	0.000 87	252	81	219	8	216	5	99
19SM-17-1-02	410	733	0.56	0.052 10	0.001 63	0.240 53	0.008 18	0.033 51	0.000 84	290	70	219	7	213	5	97
19SM-17-1-03	523	717	0.73	0.052 11	0.001 61	0.240 87	0.008 12	0.033 55	0.000 84	290	69	219	7	213	5	97
19SM-17-1-04	110	247	0.45	0.050 95	0.002 00	0.239 29	0.009 85	0.034 09	0.000 88	239	88	218	8	216	5	99
19SM-17-1-05	138	303	0.45	0.052 19	0.001 88	0.241 87	0.009 23	0.033 63	0.000 86	294	80	220	8	213	5	97
19SM-17-1-06	367	711	0.52	0.051 42	0.002 37	0.242 75	0.011 54	0.034 27	0.000 90	260	103	221	9	217	6	98
19SM-17-1-07	367	959	0.38	0.051 39	0.001 46	0.241 46	0.007 63	0.034 10	0.000 85	259	64	220	6	216	5	98
19SM-17-1-08	168	342	0.49	0.051 37	0.001 81	0.240 49	0.009 02	0.033 98	0.000 86	258	79	219	7	215	5	98
19SM-17-1-09	194	121	1.61	0.060 02	0.001 99	0.740 43	0.026 41	0.089 54	0.002 28	604	70	563	15	553	13	98
19SM-17-1-10	311	488	0.64	0.080 45	0.002 06	2.266 15	0.066 10	0.204 45	0.005 09	1 208	50	1 202	21	1 199	27	100
19SM-17-1-11	113	283	0.40	0.052 74	0.002 03	0.244 38	0.009 88	0.033 63	0.000 87	318	85	222	8	213	5	96
19SM-17-1-12	548	1 115	0.49	0.051 26	0.001 51	0.239 74	0.007 77	0.033 94	0.000 85	253	66	218	6	215	5	99
19SM-17-1-13	199	511	0.39	0.052 44	0.001 87	0.242 96	0.009 20	0.033 63	0.000 86	305	79	221	8	213	5	97
19SM-17-1-14	353	793	0.45	0.052 69	0.001 70	0.243 47	0.008 51	0.033 54	0.000 85	315	72	221	7	213	5	96
19SM-17-1-15	99	168	0.59	0.048 87	0.002 65	0.233 73	0.012 90	0.034 71	0.000 94	142	123	213	11	220	6	103
19SM-17-1-17	502	638	0.79	0.051 39	0.001 65	0.240 58	0.008 37	0.033 98	0.000 86	258	72	219	7	215	5	98
19SM-17-1-18	1 233	3 074	0.40	0.051 70	0.001 56	0.241 30	0.008 00	0.033 88	0.000 86	272	68	220	7	215	5	98
19SM-17-1-19	605	1 546	0.39	0.052 01	0.001 63	0.242 26	0.008 28	0.033 80	0.000 86	286	70	220	7	214	5	97
19SM-17-1-20	284	567	0.50	0.049 95	0.001 72	0.237 91	0.008 76	0.034 57	0.000 89	193	78	217	7	219	6	101
19SM-17-1-21	312	664	0.47	0.049 55	0.001 75	0.233 33	0.008 81	0.034 18	0.000 88	174	81	213	7	217	5	102
19SM-17-1-22	304	703	0.43	0.050 88	0.001 78	0.238 36	0.008 92	0.034 00	0.000 88	235	79	217	7	216	5	99
19SM-17-1-23	173	250	0.69	0.078 34	0.003 62	1.982 63	0.094 27	0.183 69	0.005 07	1 155	89	1 110	32	1 087	28	98
19SM-17-1-24	483	931	0.52	0.051 54	0.001 86	0.238 89	0.009 19	0.033 64	0.000 87	265	81	218	8	213	5	98
19SM-17-1-25	95	163	0.58	0.080 10	0.003 01	2.148 97	0.085 51	0.194 72	0.005 14	1 200	72	1 165	28	1 147	28	98
19SM-25-1-01	125	179	0.70	0.052 67	0.003 05	0.235 88	0.013 70	0.032 51	0.000 85	315	126	215	11	206	5	96
19SM-25-1-02	90	198	0.45	0.053 54	0.003 16	0.238 21	0.014 07	0.032 30	0.000 85	352	128	217	12	205	5	94
19SM-25-1-03	124	189	0.66	0.052 01	0.003 83	0.236 81	0.017 33	0.033 05	0.000 93	286	160	216	14	210	6	97
19SM-25-1-04	103	126	0.82	0.056 09	0.003 49	0.239 01	0.014 83	0.030 93	0.000 83	456	133	218	12	196	5	90
19SM-25-1-05	111	226	0.49	0.051 50	0.001 92	0.235 12	0.009 05	0.033 14	0.000 80	263	83	214	7	210	5	98
19SM-25-1-06	395	731	0.54	0.051 60	0.001 65	0.233 30	0.007 88	0.032 82	0.000 78	268	72	213	6	208	5	98
19SM-25-1-07	157	336	0.47	0.054 46	0.002 08	0.238 94	0.009 40	0.031 85	0.000 77	390	83	218	8	202	5	93
19SM-25-1-09	102	427	0.24	0.056 19	0.003 06	0.241 81	0.013 20	0.031 23	0.000 81	459	117	220	11	198	5	90
19SM-25-1-10	93	192	0.49	0.054 46	0.003 62	0.237 00	0.015 67	0.031 59	0.000 86	390	142	216	13	201	5	93
19SM-25-1-11	136	302	0.45	0.052 38	0.001 83	0.236 09	0.008 62	0.032 71	0.000 79	302	78	215	7	208	5	96
19SM-25-1-12	224	339	0.66	0.054 25	0.002 21	0.238 01	0.009 95	0.031 84	0.000 78	381	89	217	8	202	5	93
19SM-25-1-13	185	273	0.68	0.051 06	0.002 20	0.235 82	0.010 39	0.033 52	0.000 83	243	96	215	9	213	5	99
19SM-25-1-14	70	95	0.74	0.051 09	0.002 59	0.235 58	0.012 07	0.033 47	0.000 85	245	113	215	10	212	5	99
19SM-25-1-15	117	161	0.73	0.051 26	0.003 07	0.234 39	0.014 04	0.033 19	0.000 88	253	132	214	12	211	5	98
19SM-25-1-16	169	389	0.43	0.051 57	0.001 93	0.233 31	0.009 04	0.032 84	0.000 80	266	84	213	7	208	5	98
19SM-25-1-18	127	218	0.58	0.051 69	0.002 17	0.235 14	0.010 08	0.033 01	0.000 82	272	93	214	8	209	5	98
19SM-25-1-19	59	40	1.48	0.076 97	0.004 03	2.013 82	0.106 01	0.189 89	0.005 19	1 120	101	1 120	36	1 121	28	100
19SM-25-1-20	166	362	0.46	0.051 87	0.002 10	0.236 14	0.009 79	0.033 04	0.000 82	280	90	215	8	210	5	97
19SM-30-1-01	541	849	0.64	0.051 51	0.001 38	0.241 35	0.007 70	0.034 00	0.000 92	264	60	220	6	216	6	98
19SM-30-1-02	134	297	0.45	0.050 36	0.001 56	0.237 76	0.008 40	0.034 25	0.000 93	212	70	217	7	217	6	100
19SM-30-1-03	441	908	0.49	0.052 31	0.002 32	0.241 37	0.011 35	0.033 48	0.000 94	299	98	220	9	212	6	97
19SM-30-1-04	363	703	0.52	0.049 95	0.001 65	0.236 51	0.008 76	0.034 36	0.000 93	193	75	216	7	218	6	101
19SM-30-1-05	135	261	0.52	0.051 59	0.002 78	0.297 62	0.016 56	0.041 86	0.001 21	267	119	265	13	264	7	100
19SM-30-1-06	239	543	0.44	0.050 95	0.001 45	0.240 66	0.007 96	0.034 28	0.000 92	238	65	219	7	217	6	99
19SM-30-1-07	145	294	0.49	0.051 03	0.004 10	0.235 34	0.018 94	0.033 47	0.001 06	242	175	215	16	212	7	99
19SM-30-1-08	130	304	0.43	0.050 22	0.001 78	0.239 74	0.009 29	0.034 65	0.000 94	205	80	218	8	220	6	101
19SM-30-1-09	107	236	0.45	0.053 13	0.001 76	0.251 52	0.009 25	0.034 36	0.000 93	334	73	228	8	218	6	96
19SM-30-1-10	1 187	3 200	0.37	0.052 29	0.001 32	0.244 58	0.007 38	0.033 95	0.000 90	298	56	222	6	215	6	97
19SM-30-1-11	457	1 181	0.39	0.051 29	0.001 53	0.241 83	0.008 11	0.034 22	0.000 90	254	67	220	7	217	6	99
19SM-30-1-12	179	792	0.23	0.056 31	0.004 59	0.251 60	0.020 41	0.032 43	0.001 03	464	172	228	17	206	6	90
19SM-30-1-13	386	682	0.57	0.051 86	0.001 56	0.241 86	0.008 15	0.033 85	0.000 89	279	67	220	7	215	6	98
19SM-30-1-14	165	276	0.60	0.048 58	0.002 11	0.229 43	0.010 45	0.034 28	0.000 93	128	99	210	9	217	6	104
19SM-30-1-15	795	1 016	0.78	0.049 23	0.001 53	0.229 86	0.007 91	0.033 90	0.000 89	159	71	210	7	215	6	102
19SM-30-1-16	328	693	0.47	0.051 22	0.001 52	0.237 80	0.007 88	0.033 70	0.000 88	251	67	217	6	214	5	99
19SM-30-1-17	125	266	0.47	0.049 59	0.001 77	0.231 53	0.008 89	0.033 89	0.000 90	176	81	212	7	215	6	102
19SM-30-1-18	1 276	3 755	0.34	0.052 77	0.001 42	0.245 89	0.007 53	0.033 83	0.000 88	319	60	223	6	215	5	96
19SM-30-1-19	232	563	0.41	0.051 55	0.001 81	0.240 34	0.009 06	0.033 84	0.000 89	265	79	219	7	215	6	98
19SM-30-1-20	375	602	0.62	0.052 27	0.001 79	0.239 56	0.008 83	0.033 27	0.000 87	297	76	218	7	211	5	97
19SM-30-1-21	578	1 551	0.37	0.050 80	0.001 49	0.236 17	0.007 60	0.033 75	0.000 87	232	66	215	6	214	5	99
19SM-30-1-22	105	174	0.61	0.050 13	0.001 95	0.233 47	0.009 52	0.033 80	0.000 89	201	88	213	8	214	6	101
19SM-30-1-23	543	1 247	0.44	0.055 46	0.001 84	0.244 45	0.008 68	0.032 00	0.000 83	430	72	222	7	203	5	91
19SM-30-1-24	105	210	0.50	0.048 70	0.002 23	0.232 61	0.010 92	0.034 67	0.000 93	133	104	212	9	220	6	103

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表 2 西苏门答腊实武牙地区晚三叠世花岗岩的锆石稀土元素（10^-6）含量

Table 2. LA-ICP-MS zircon REE (10^-6) analytical result for Late Triassic granites from the Sibolga area

样品号	La	Ce	Pr	Nd	Sm	Eu	Gd	Tb	Dy	Ho	Er	Tm	Yb	Lu	ΣREE	δEu
19SM-17-1-01	0.89	8.63	0.33	3.49	6.06	0.40	33.30	12.30	144.0	53.0	226	46.3	432	82.5	1 049	0.03
19SM-17-1-02	1.67	12.20	0.53	3.60	4.10	0.28	21.00	7.64	88.2	33.5	146	29.6	273	52.5	673	0.03
19SM-17-1-03	0.03	20.80	0.14	2.24	3.69	0.94	19.70	6.91	80.4	31.4	145	32.2	323	64.2	730	0.11
19SM-17-1-04	0.01	2.16	0.19	3.43	6.99	0.89	34.90	12.10	139.0	49.6	209	40.5	358	67.1	924	0.06
19SM-17-1-05	0.01	3.95	0.05	1.00	1.71	0.13	11.20	4.15	50.1	18.5	81	17.0	164	32.8	386	0.03
19SM-17-1-06	18.40	57.30	5.97	27.50	9.13	0.35	22.10	7.17	84.4	31.4	137	28.1	266	52.1	746	0.02
19SM-17-1-07	12.80	39.00	4.06	19.90	5.85	0.22	15.40	4.93	57.3	21.9	102	22.6	226	44.1	575	0.02
19SM-17-1-08	0.05	2.54	0.25	4.25	8.79	0.89	43.10	14.60	160.0	55.2	218	40.5	354	65.8	968	0.05
19SM-17-1-11	4.26	13.60	1.24	5.58	2.56	0.13	8.26	2.98	37.6	15.0	68	14.5	136	26.4	336	0.03
19SM-17-1-12	19.40	57.50	5.65	26.70	8.30	0.34	20.70	6.71	75.0	28.4	128	28.0	266	50.0	721	0.03
19SM-17-1-13	5.54	18.60	1.79	8.53	3.63	0.22	12.60	4.68	59.6	23.4	108	22.5	225	40.6	535	0.03
19SM-17-1-14	5.67	22.30	1.71	8.25	3.45	0.19	13.10	4.54	53.5	21.2	98	20.7	196	37.5	486	0.03
19SM-17-1-15	0.02	2.62	0.18	3.03	5.85	0.44	25.40	8.27	92.2	32.6	136	27.3	245	45.2	624	0.04
19SM-17-1-17	0.17	11.50	0.59	9.01	13.40	1.02	46.30	13.20	135.0	46.0	188	36.3	321	58.4	879	0.04
19SM-17-1-18	10.80	38.60	3.51	16.40	7.82	0.32	26.00	9.32	116.0	47.0	224	48.4	462	86.9	1 097	0.02
19SM-17-1-19	0.03	7.37	0.05	0.96	3.04	0.09	17.80	6.92	86.8	35.1	162	34.2	324	59.2	738	0.01
19SM-17-1-20	0.04	4.84	0.13	2.13	4.16	0.45	21.00	7.59	91.7	35.2	157	33.6	315	58.9	732	0.05
19SM-17-1-21	0.01	6.69	0.05	0.98	2.70	0.23	14.90	5.33	63.7	24.9	113	24.1	223	40.9	520	0.04
19SM-17-1-22	0.00	10.70	0.03	0.49	1.66	0.11	10.2	3.77	46.9	19.2	90	19.8	187	34.4	425	0.03
19SM-17-1-24	23.40	65.50	6.73	31.50	7.84	0.29	17.0	5.24	60.6	22.9	104	22.3	213	41.4	621	0.03
19SM-25-1-01	0.13	3.55	0.29	4.33	7.20	1.49	28.6	8.36	91.0	32.5	131	24.8	214	41.3	588	0.10
19SM-25-1-02	0.02	4.44	0.06	1.14	2.28	0.31	11.8	4.17	49.2	18.7	79	15.4	141	28.5	357	0.06
19SM-25-1-03	3.12	10.10	1.13	8.24	8.33	1.45	30.9	9.65	100.0	34.4	142	27.5	245	46.6	669	0.09
19SM-25-1-04	0.81	3.90	0.50	6.15	7.53	2.24	27.5	8.60	86.3	29.6	117	21.9	196	39.4	548	0.16
19SM-25-1-05	0.01	4.48	0.04	0.98	2.61	0.17	12.9	4.69	54.8	20.8	91	18.8	175	34.7	422	0.03
19SM-25-1-06	0.60	9.55	0.27	3.10	5.33	0.30	29.9	10.70	124.0	46.3	194	37.5	337	66.9	865	0.02
19SM-25-1-07	18.80	46.20	5.13	24.80	6.66	0.34	18.3	5.72	63.2	23.3	101	20.8	195	39.6	569	0.03
19SM-25-1-09	0.42	5.21	0.07	0.85	1.80	0.18	9.2	3.24	38.8	14.8	67	14.0	132	26.0	314	0.05
19SM-25-1-10	8.35	20.30	2.10	10.40	4.11	0.46	12.8	4.05	43.9	15.6	68	13.7	131	26.4	360	0.06
19SM-25-1-11	0.05	3.56	0.05	0.91	1.98	0.18	10.9	4.07	49.6	19.1	85	17.3	168	33.7	394	0.04
19SM-25-1-12	4.12	13.10	1.41	10.10	9.10	1.43	36.4	11.40	117.0	40.5	164	31.5	286	56.0	782	0.08
19SM-25-1-13	0.03	4.01	0.38	5.89	8.51	1.27	36.8	11.40	125.0	42.7	173	32.6	293	57.7	791	0.07
19SM-25-1-14	0.56	2.93	0.49	5.85	7.86	2.68	26.8	7.75	81.9	27.4	109	20.5	183	38.3	515	0.18
19SM-25-1-15	1.20	4.89	0.57	5.94	7.63	2.11	28.6	8.44	87.3	30.3	122	23.7	204	39.7	567	0.14
19SM-25-1-16	0.00	5.49	0.04	0.92	2.04	0.16	11.9	4.35	51.2	19.6	85	17.4	161	32.4	391	0.03
19SM-25-1-18	0.04	4.47	0.10	2.15	5.38	0.74	27.0	9.29	101.0	35.5	143	27.5	250	47.3	653	0.06
19SM-25-1-20	0.01	5.05	0.06	1.09	2.37	0.24	13.7	4.67	54.6	20.8	90	18.4	170	32.9	413	0.04
19SM-30-1-01	0.02	12.80	0.14	2.38	5.03	0.18	23.1	7.97	94.1	35.4	148	30.2	279	48.7	687	0.02
19SM-30-1-02	0.00	4.37	0.05	0.84	2.05	0.16	11.4	3.95	47.4	17.4	74	15.9	154	28.4	359	0.03
19SM-30-1-03	0.01	8.27	0.07	1.43	3.35	0.11	17.6	6.41	79.0	29.9	129	26.7	252	43.8	597	0.01
19SM-30-1-04	0.00	8.47	0.06	1.66	3.70	0.15	20.1	7.34	85.9	32.6	140	28.8	271	47.9	648	0.02
19SM-30-1-05	1.05	7.30	0.30	2.31	2.66	0.20	13.7	4.80	57.6	21.9	95	19.9	187	34.3	448	0.03
19SM-30-1-06	0.00	7.95	0.04	0.99	2.62	0.11	13.6	5.03	57.4	21.5	93	20.5	194	34.0	450	0.02
19SM-30-1-07	0.00	3.44	0.04	0.82	2.14	0.24	10.3	3.88	45.5	17.5	77	16.6	163	27.8	368	0.05
19SM-30-1-08	0.00	4.79	0.03	0.56	1.35	0.10	8.0	2.96	35.3	13.7	60	12.8	121	21.8	282	0.03
19SM-30-1-09	0.00	3.54	0.04	0.60	1.53	0.17	8.8	3.19	38.1	14.3	63	13.7	137	23.7	308	0.05
19SM-30-1-10	13.20	48.30	5.44	30.90	13.10	0.39	45.0	16.60	202.0	75.3	314	63.7	579	100.0	1 507	0.02
19SM-30-1-11	10.40	36.70	3.43	17.10	5.53	0.21	15.2	5.12	61.2	23.7	108	24.1	231	40.8	582	0.02
19SM-30-1-12	0.05	3.17	0.03	0.31	0.77	0.03	4.38	2.00	26.9	11.2	53	12.3	124	22.5	260	0.02
19SM-30-1-13	1.67	11.70	0.62	4.93	6.20	0.25	27.2	9.88	107.0	38.3	160	33.6	320	54.2	776	0.02
19SM-30-1-14	0.25	4.03	0.26	4.18	6.12	1.06	25.5	8.66	93.4	32.7	135	28.1	259	42.7	642	0.08
19SM-30-1-15	0.19	10.70	0.68	10.40	17.00	1.55	67.2	21.90	227.0	76.3	308	64.0	583	94.7	1 483	0.05
19SM-30-1-16	28.60	71.40	7.63	34.40	8.65	0.26	22.0	6.39	70.7	25.5	109	23.1	221	37.9	666	0.02
19SM-30-1-17	0.01	5.25	0.11	2.22	3.91	0.60	18.0	6.15	68.4	24.5	101	21.1	198	34.4	484	0.07
19SM-30-1-18	0.32	8.91	0.17	2.07	6.73	0.06	41.5	17.40	218.0	86.3	384	81.1	743	123.0	1 714	0.00
19SM-30-1-19	0.00	6.84	0.05	1.06	2.36	0.11	13.2	5.09	61.8	23.4	101	21.6	209	37.5	483	0.02
19SM-30-1-20	0.11	7.34	0.16	3.00	5.46	0.44	26.2	9.20	100.0	36.2	149	31.4	293	48.9	711	0.04
19SM-30-1-21	16.00	59.30	8.36	45.90	16.90	1.10	35.9	11.70	132.0	49.1	210	43.3	413	66.4	1 109	0.04
19SM-30-1-22	0.02	2.88	0.20	3.39	5.55	0.88	21.8	7.68	85.2	30.4	125	26.7	228	39.3	577	0.08
19SM-30-1-23	4.43	24.20	2.76	16.20	8.10	1.68	17.6	6.37	71.0	26.1	115	25.6	248	46.5	614	0.14
19SM-30-1-24	2.92	11.20	1.89	7.14	4.81	0.66	17.0	5.80	62.8	23.0	99	21.0	194	33.8	485	0.07

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西苏门答腊实武牙地区晚三叠世花岗岩锆石年代学及其特提斯构造意义

doi: 10.3799/dqkx.2021.039

作者简介:
余小清(1994-), 女, 博士研究生, 地球化学专业. ORCID: 0000-0002-8573-5393. E-mail: yuxq9@mail2.sysu.edu.cn

通讯作者:
钱鑫, E-mail: qianx3@mail.sysu.edu.cn

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Zircon U-Pb Geochronology of Late Triassic Granites from Sibolga Area in Western Sumatra and Its Tethyan Tectonic Implications

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西苏门答腊实武牙地区晚三叠世花岗岩锆石年代学及其特提斯构造意义

doi: 10.3799/dqkx.2021.039

作者简介: 余小清(1994-), 女, 博士研究生, 地球化学专业. ORCID: 0000-0002-8573-5393. E-mail: yuxq9@mail2.sysu.edu.cn

通讯作者: 钱鑫, E-mail: qianx3@mail.sysu.edu.cn

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Zircon U-Pb Geochronology of Late Triassic Granites from Sibolga Area in Western Sumatra and Its Tethyan Tectonic Implications

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作者简介:
余小清(1994-), 女, 博士研究生, 地球化学专业. ORCID: 0000-0002-8573-5393. E-mail: yuxq9@mail2.sysu.edu.cn

通讯作者:
钱鑫, E-mail: qianx3@mail.sysu.edu.cn