内蒙古赤峰大西营子金矿区赋矿火山岩年代学与岩石地球化学特征

doi:10.19657/j.geoscience.1000-8527.2020.003

摘要/Abstract

摘要：

大西营子金矿区位于内蒙古赤峰地区,金矿赋存在玛尼吐组火山岩中。对大西营子金矿区赋矿围岩进行了岩石学、锆石U-Pb年代学和岩石地球化学研究。矿区火山岩主要包括安山岩、粗安岩、粗面岩和火山碎屑岩。通过锆石LA-ICP-MS U-Pb定年,获得安山岩和粗安岩年龄分别为(157.8±6.2) Ma和(156.9±7.4) Ma,应代表其形成年龄。岩石地球化学数据显示该套火山岩具有相对富碱、富铝的特征,属于高钾钙碱性和碱性岩石系列。岩石富集轻稀土元素和大离子亲石元素(Th、U、Zr、Hf),亏损重稀土元素和Nb、Ta、Ti等高场强元素。这些特征显示岩浆来自被俯冲流体交代富集的岩石圈地幔,且经历了以单斜辉石为主的结晶分异过程。结合区域地质资料,认为在大西营子金矿区火山岩形成于造山后伸展环境,与蒙古—鄂霍茨克洋闭合作用有关。

关键词: 造山后, 粗安岩, 锆石U-Pb定年, 大西营子金矿, 蒙古—鄂霍茨克洋

Abstract:

The Daxiyingzi gold deposit is hosted by Manitu Formation volcanic rocks, and is located at Chifeng, Inner Mongolia. We undertake zircon U-Pb dating and whole-rock geochemical analyses of the volcanic rocks from Daxiyingzi, with the aim to constrain the formation age and tectonic evolution of the volcanic rocks. The volcanic rocks mainly consist of andesite, trachyandesite and trachyte. LA-ICP-MS U-Pb zircon dating of the andesite and trachyandesite yield Late Jurassic (~157 Ma) age. The volcanic rocks are featured by their high alkali and Al₂O₃ contents, and are high-K calc-alkaline to alkaline. The volcanic rocks are also characterized by their moderately-enriched light rare earth element (LREE) patterns and high abundances of Th, U, Zr, and Hf, but negative Nb, Ta, and Ti anomalies. These features indicate that the mafic rocks were likely formed by partial melting of the lithospheric mantle metasomatized by subduction, and the AFC process likely played an important role in the magmatic evolution. Combined with previous studies on the contemporaneous tectono-magmatic activities in the northern North China Craton, we suggest that the volcanic rocks were formed in a post-orogenic extensional setting, possibly related to the closure of Mongol-Okhotsk Ocean.

Key words: post-orogenic, trachyandesite, zircon U-Pb dating, Daxiyingzi gold deposit, Mongol-Okhotsk Ocean

中图分类号:

P588.1

柳长峰, 赵守恒, 张浩然, 郎海龙, 张凤娟, 刘文灿. 内蒙古赤峰大西营子金矿区赋矿火山岩年代学与岩石地球化学特征[J]. 现代地质, 2020, 34(01): 27-39.

LIU Changfeng, ZHAO Shouheng, ZHANG Haoran, LANG Hailong, ZHANG Fengjuan, LIU Wencan. Geochronology and Geochemistry Characteristics of Volcanic Rocks from the Daxiyingzi Gold Deposit in Chifeng, Inner Mongolia[J]. Geoscience, 2020, 34(01): 27-39.

图/表 10

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样品及测点	Th/ 10^-6	U/ 10^-6	Th/ U	同位素比值				同位素年龄/Ma						谐和度/%
样品及测点	Th/ 10^-6	U/ 10^-6	Th/ U	²⁰⁷Pb/ ²⁰⁶Pb±1σ	²⁰⁷Pb/ ²³⁵U±1σ	²⁰⁶Pb/ ²³⁸U±1σ		²⁰⁷Pb/ ²⁰⁶Pb±1σ		²⁰⁷Pb/ ²³⁵U±1σ		²⁰⁶Pb/ ²³⁸U±1σ		谐和度/%
zk1603-tw1.1	515	254	2.03	0.049 64±0.002 64	0.181 04±0.008 84	0.026 48±0.000 79	178±119		169±8		169±5		100
zk1603-tw1.2	18	16	1.13	0.105 42±0.005 10	4.335 93±0.197 70	0.298 61±0.011 33	1 722±86		1 700±38		1 684±56		99
zk1603-tw1.3	28	30	0.95	0.067 14±0.010 46	0.186 27±0.025 96	0.020 14±0.001 51	842±295		173±22		129±10		74
zk1603-tw1.4	35	36	0.97	0.032 16±0.005 96	0.114 04±0.020 05	0.025 74±0.001 66	0		110±18		164±10		149
zk1603-tw1.5	185	125	1.48	0.095 01±0.005 87	0.352 17±0.018 72	0.026 91±0.001 05	1 528±112		306±14		171±7		56
zk1603-tw1.6	51	175	0.29	0.153 75±0.003 48	8.915 08±0.200 99	0.420 90±0.009 20	2 388±38		2 329±21		2 265±42		97
zk1603-tw1.7	31	41	0.75	0.103 42±0.003 62	4.218 92±0.140 77	0.296 10±0.008 54	1 686±63		1 678±27		1 672±42		100
zk1603-tw1.8	105	147	0.72	0.165 40±0.003 78	11.334 63±0.259 62	0.497 39±0.011 07	2 512±38		2 551±21		2 603±48		102
zk1603-tw1.9	76	116	0.65	0.158 05±0.003 72	10.023 76±0.235 02	0.460 29±0.010 44	2 435±39		2 437±22		2 441±46		100
zk1603-tw1.10	117	106	1.10	0.041 32±0.003 90	0.141 99±0.012 54	0.024 94±0.001 01	0		135±11		159±6		118
zk1603-tw1.11	28	38	0.74	0.045 43±0.007 09	0.153 40±0.022 13	0.024 51±0.001 61	0±308		145±19		156±10		108
zk1603-tw1.12	24	33	0.71	0.057 54±0.008 02	0.192 85±0.024 16	0.024 32±0.001 63	512±281		179±21		155±10		86
zk1603-tw1.13	263	259	1.01	0.162 45±0.003 58	9.824 02±0.215 26	0.438 81±0.009 33	2 481±37		2 418±20		2 345±42		97
zk1603-tw1.14	10	287	0.03	0.113 46±0.002 63	4.211 51±0.095 72	0.269 33±0.005 79	1 856±41		1 676±19		1 537±29		92
zk1603-tw1.15	85	84	1.02	0.044 75±0.004 83	0.146 97±0.014 76	0.023 83±0.001 09	0±175		139±13		152±7		109
zk1603-tw1.16	41	37	1.10	0.101 76±0.003 72	4.122 40±0.143 43	0.293 95±0.008 70	1 656±66		1 659±28		1 661±43		100
zk1603-tw1.17	65	49	1.33	0.102 66±0.003 39	4.238 25±0.133 78	0.299 55±0.008 21	1 673±60		1 682±26		1 689±41		100
zk1603-tw1.18	261	227	1.15	0.045 86±0.002 73	0.158 06±0.008 66	0.025 01±0.000 78	0±128		149±8		159±5		107
zk1603-tw1.19	38	208	0.18	0.175 62±0.003 93	11.01 27±0.244 55	0.454 93±0.009 80	2 612±37		2 524±21		2 417±43		96
zk1603-tw1.20	71	101	0.70	0.050 05±0.004 44	0.155 97±0.012 60	0.022 61±0.000 98	198±194		147±11		144±6		98
zk1603-tw1.21	10 890	2 866	3.80	0.333 23±0.015 40	1.490 70±0.050 33	0.032 45±0.001 27	3 632±69		927±21		206±8		22
zk1603-tw1.22	12	217	0.06	0.111 92±0.002 62	4.789 90±0.109 72	0.310 46±0.006 69	1 831±42		1 783±19		1 743±33		98
zk1603-tw1.23	25	28	0.90	0.048 27±0.007 79	0.174 44±0.025 73	0.026 22±0.001 88	112±342		163±22		167±12		102
zk1603-tw1.24	41	42	0.99	0.055 66±0.007 05	0.186 39±0.021 42	0.024 29±0.001 44	438±260		174±18		155±9		89
zk1603-tw2.1	93	1 072	0.09	0.108 98±0.002 28	4.623 14±0.102 13	0.307 71±0.006 66	1 782±38		1 754±18		1 729±33		99
zk1603-tw2.2	349	265	1.32	0.049 53±0.004 63	0.179 08±0.015 31	0.026 22±0.001 20	173±205		167±13		167±8		100
zk1603-tw2.3	342	507	0.67	0.164 94±0.003 58	10.629 31±0.243 47	0.467 46±0.010 53	2 507±36		2 491±21		2 472±46		99
zk1603-tw2.4	55	33	1.66	0.100 24±0.003 93	4.071 06±0.153 83	0.294 60±0.009 41	1 629±71		1 649±31		1 665±47		101
zk1603-tw2.5	178	541	0.33	0.115 92±0.002 57	5.157 78±0.119 28	0.322 74±0.007 23	1 894±39		1 846±20		1 803±35		98
zk1603-tw2.6	269	589	0.46	0.161 41±0.003 40	10.246 43±0.228 61	0.460 48±0.010 12	2 470±35		2 457±21		2 442±45		99
zk1603-tw2.7	31	33	0.95	0.049 25±0.007 50	0.164 16±0.022 98	0.024 18±0.001 61	160±321		154±20		154±10		100
zk1603-tw2.8	40	44	0.90	0.049 78±0.010 76	0.182 67±0.035 59	0.026 62±0.002 68	185±438		170±31		169±17		99
zk1603-tw2.9	233	331	0.70	0.156 52±0.003 35	10.181 00±0.230 22	0.471 83±0.010 48	2 418±36		2 451±21		2 492±46		102
zk1603-tw2.10	6	101	0.06	0.110 55±0.003 03	4.920 49±0.135 46	0.322 84±0.008 21	1 809±49		1 806±23		1 804±40		100
zk1603-tw2.11	262	843	0.31	0.159 83±0.003 31	10.081 77±0.22 18	0.457 55±0.009 92	2 454±35		2 442±20		2 429±44		99
zk1603-tw2.12	23	22	1.02	0.048 20±0.043 65	0.148 86±0.127 59	0.022 40±0.006 77	109±1 355		141±113		143±43		101
zk1603-tw2.13	64	123	0.52	0.155 23±0.003 75	9.858 69±0.246 95	0.460 69±0.011 21	2 404±40		2 422±23		2 443±49		101
zk1603-tw2.14	37	35	1.06	0.050 51±0.019 51	0.169 90±0.059 86	0.024 40±0.004 07	219±710		159±52		155±26		98
zk1603-tw2.15	121	93	1.30	0.049 52±0.007 57	0.162 39±0.022 57	0.023 79±0.001 67	173±322		153±20		152±11		99
zk1603-tw2.16	106	69	1.54	0.105 38±0.003 21	4.372 58±0.131 72	0.300 98±0.008 14	1 721±55		1 707±25		1 696±40		99
zk1603-tw2.17	160	205	0.78	0.051 23±0.002 55	0.279 31±0.012 94	0.039 54±0.001 18	251±110		250±10		250±7		100
zk1603-tw2.18	133	133	1.00	0.157 22±0.003 71	10.175 71±0.249 98	0.469 50±0.011 24	2 426±39		2 451±23		2 481±49		101
zk1603-tw2.19	143	250	0.57	0.160 64±0.003 53	10.045 36±0.232 03	0.453 59±0.010 27	2 462±37		2 439±21		2 411±46		99
zk1603-tw2.20	85	124	0.69	0.166 49±0.003 89	10.716 87±0.261 22	0.466 92±0.011 13	2 523±39		2 499±23		2 470±49		99
zk1603-tw2.21	94	93	1.01	0.048 10±0.009 59	0.147 04±0.027 34	0.022 17±0.001 74	104±414		139±24		141±11		102
zk1603-tw2.22	194	250	0.77	0.155 10±0.004 07	9.523 82±0.256 36	0.445 41±0.011 57	2 403±44		2 390±25		2 375±52		99
zk1603-tw2.23	492	317	1.55	0.048 36±0.004 26	0.163 93±0.013 21	0.024 59±0.001 08	117±196		154±12		157±7		102
zk1603-tw2.24	214	380	0.56	0.051 19±0.002 00	0.280 20±0.010 40	0.039 71±0.001 05	249±88		251±8		251±6		100

样品及测点	Th/ 10^-6	U/ 10^-6	Th/ U	同位素比值				同位素年龄/Ma						谐和度/%
样品及测点	Th/ 10^-6	U/ 10^-6	Th/ U	²⁰⁷Pb/ ²⁰⁶Pb±1σ	²⁰⁷Pb/ ²³⁵U±1σ	²⁰⁶Pb/ ²³⁸U±1σ		²⁰⁷Pb/ ²⁰⁶Pb±1σ		²⁰⁷Pb/ ²³⁵U±1σ		²⁰⁶Pb/ ²³⁸U±1σ		谐和度/%
zk1603-tw1.1	515	254	2.03	0.049 64±0.002 64	0.181 04±0.008 84	0.026 48±0.000 79	178±119		169±8		169±5		100
zk1603-tw1.2	18	16	1.13	0.105 42±0.005 10	4.335 93±0.197 70	0.298 61±0.011 33	1 722±86		1 700±38		1 684±56		99
zk1603-tw1.3	28	30	0.95	0.067 14±0.010 46	0.186 27±0.025 96	0.020 14±0.001 51	842±295		173±22		129±10		74
zk1603-tw1.4	35	36	0.97	0.032 16±0.005 96	0.114 04±0.020 05	0.025 74±0.001 66	0		110±18		164±10		149
zk1603-tw1.5	185	125	1.48	0.095 01±0.005 87	0.352 17±0.018 72	0.026 91±0.001 05	1 528±112		306±14		171±7		56
zk1603-tw1.6	51	175	0.29	0.153 75±0.003 48	8.915 08±0.200 99	0.420 90±0.009 20	2 388±38		2 329±21		2 265±42		97
zk1603-tw1.7	31	41	0.75	0.103 42±0.003 62	4.218 92±0.140 77	0.296 10±0.008 54	1 686±63		1 678±27		1 672±42		100
zk1603-tw1.8	105	147	0.72	0.165 40±0.003 78	11.334 63±0.259 62	0.497 39±0.011 07	2 512±38		2 551±21		2 603±48		102
zk1603-tw1.9	76	116	0.65	0.158 05±0.003 72	10.023 76±0.235 02	0.460 29±0.010 44	2 435±39		2 437±22		2 441±46		100
zk1603-tw1.10	117	106	1.10	0.041 32±0.003 90	0.141 99±0.012 54	0.024 94±0.001 01	0		135±11		159±6		118
zk1603-tw1.11	28	38	0.74	0.045 43±0.007 09	0.153 40±0.022 13	0.024 51±0.001 61	0±308		145±19		156±10		108
zk1603-tw1.12	24	33	0.71	0.057 54±0.008 02	0.192 85±0.024 16	0.024 32±0.001 63	512±281		179±21		155±10		86
zk1603-tw1.13	263	259	1.01	0.162 45±0.003 58	9.824 02±0.215 26	0.438 81±0.009 33	2 481±37		2 418±20		2 345±42		97
zk1603-tw1.14	10	287	0.03	0.113 46±0.002 63	4.211 51±0.095 72	0.269 33±0.005 79	1 856±41		1 676±19		1 537±29		92
zk1603-tw1.15	85	84	1.02	0.044 75±0.004 83	0.146 97±0.014 76	0.023 83±0.001 09	0±175		139±13		152±7		109
zk1603-tw1.16	41	37	1.10	0.101 76±0.003 72	4.122 40±0.143 43	0.293 95±0.008 70	1 656±66		1 659±28		1 661±43		100
zk1603-tw1.17	65	49	1.33	0.102 66±0.003 39	4.238 25±0.133 78	0.299 55±0.008 21	1 673±60		1 682±26		1 689±41		100
zk1603-tw1.18	261	227	1.15	0.045 86±0.002 73	0.158 06±0.008 66	0.025 01±0.000 78	0±128		149±8		159±5		107
zk1603-tw1.19	38	208	0.18	0.175 62±0.003 93	11.01 27±0.244 55	0.454 93±0.009 80	2 612±37		2 524±21		2 417±43		96
zk1603-tw1.20	71	101	0.70	0.050 05±0.004 44	0.155 97±0.012 60	0.022 61±0.000 98	198±194		147±11		144±6		98
zk1603-tw1.21	10 890	2 866	3.80	0.333 23±0.015 40	1.490 70±0.050 33	0.032 45±0.001 27	3 632±69		927±21		206±8		22
zk1603-tw1.22	12	217	0.06	0.111 92±0.002 62	4.789 90±0.109 72	0.310 46±0.006 69	1 831±42		1 783±19		1 743±33		98
zk1603-tw1.23	25	28	0.90	0.048 27±0.007 79	0.174 44±0.025 73	0.026 22±0.001 88	112±342		163±22		167±12		102
zk1603-tw1.24	41	42	0.99	0.055 66±0.007 05	0.186 39±0.021 42	0.024 29±0.001 44	438±260		174±18		155±9		89
zk1603-tw2.1	93	1 072	0.09	0.108 98±0.002 28	4.623 14±0.102 13	0.307 71±0.006 66	1 782±38		1 754±18		1 729±33		99
zk1603-tw2.2	349	265	1.32	0.049 53±0.004 63	0.179 08±0.015 31	0.026 22±0.001 20	173±205		167±13		167±8		100
zk1603-tw2.3	342	507	0.67	0.164 94±0.003 58	10.629 31±0.243 47	0.467 46±0.010 53	2 507±36		2 491±21		2 472±46		99
zk1603-tw2.4	55	33	1.66	0.100 24±0.003 93	4.071 06±0.153 83	0.294 60±0.009 41	1 629±71		1 649±31		1 665±47		101
zk1603-tw2.5	178	541	0.33	0.115 92±0.002 57	5.157 78±0.119 28	0.322 74±0.007 23	1 894±39		1 846±20		1 803±35		98
zk1603-tw2.6	269	589	0.46	0.161 41±0.003 40	10.246 43±0.228 61	0.460 48±0.010 12	2 470±35		2 457±21		2 442±45		99
zk1603-tw2.7	31	33	0.95	0.049 25±0.007 50	0.164 16±0.022 98	0.024 18±0.001 61	160±321		154±20		154±10		100
zk1603-tw2.8	40	44	0.90	0.049 78±0.010 76	0.182 67±0.035 59	0.026 62±0.002 68	185±438		170±31		169±17		99
zk1603-tw2.9	233	331	0.70	0.156 52±0.003 35	10.181 00±0.230 22	0.471 83±0.010 48	2 418±36		2 451±21		2 492±46		102
zk1603-tw2.10	6	101	0.06	0.110 55±0.003 03	4.920 49±0.135 46	0.322 84±0.008 21	1 809±49		1 806±23		1 804±40		100
zk1603-tw2.11	262	843	0.31	0.159 83±0.003 31	10.081 77±0.22 18	0.457 55±0.009 92	2 454±35		2 442±20		2 429±44		99
zk1603-tw2.12	23	22	1.02	0.048 20±0.043 65	0.148 86±0.127 59	0.022 40±0.006 77	109±1 355		141±113		143±43		101
zk1603-tw2.13	64	123	0.52	0.155 23±0.003 75	9.858 69±0.246 95	0.460 69±0.011 21	2 404±40		2 422±23		2 443±49		101
zk1603-tw2.14	37	35	1.06	0.050 51±0.019 51	0.169 90±0.059 86	0.024 40±0.004 07	219±710		159±52		155±26		98
zk1603-tw2.15	121	93	1.30	0.049 52±0.007 57	0.162 39±0.022 57	0.023 79±0.001 67	173±322		153±20		152±11		99
zk1603-tw2.16	106	69	1.54	0.105 38±0.003 21	4.372 58±0.131 72	0.300 98±0.008 14	1 721±55		1 707±25		1 696±40		99
zk1603-tw2.17	160	205	0.78	0.051 23±0.002 55	0.279 31±0.012 94	0.039 54±0.001 18	251±110		250±10		250±7		100
zk1603-tw2.18	133	133	1.00	0.157 22±0.003 71	10.175 71±0.249 98	0.469 50±0.011 24	2 426±39		2 451±23		2 481±49		101
zk1603-tw2.19	143	250	0.57	0.160 64±0.003 53	10.045 36±0.232 03	0.453 59±0.010 27	2 462±37		2 439±21		2 411±46		99
zk1603-tw2.20	85	124	0.69	0.166 49±0.003 89	10.716 87±0.261 22	0.466 92±0.011 13	2 523±39		2 499±23		2 470±49		99
zk1603-tw2.21	94	93	1.01	0.048 10±0.009 59	0.147 04±0.027 34	0.022 17±0.001 74	104±414		139±24		141±11		102
zk1603-tw2.22	194	250	0.77	0.155 10±0.004 07	9.523 82±0.256 36	0.445 41±0.011 57	2 403±44		2 390±25		2 375±52		99
zk1603-tw2.23	492	317	1.55	0.048 36±0.004 26	0.163 93±0.013 21	0.024 59±0.001 08	117±196		154±12		157±7		102
zk1603-tw2.24	214	380	0.56	0.051 19±0.002 00	0.280 20±0.010 40	0.039 71±0.001 05	249±88		251±8		251±6		100

样品	岩性		SiO₂		Al₂O₃			TiO₂			Fe₂O₃			FeO			CaO			MgO			K₂O			Na₂O		MnO		P₂O₅			LOI		A/ CNK		里特曼指数			Y		La
ZK1105-YQ1	粗安岩		58.63		16.96			0.88			3.34			2.93			4.78			1.89			3.30			4.70		0.07		0.42			1.82		0.85		3.95			20.16		34.75
ZK801-YQ1	粗面岩		64.27		16.04			0.73			2.19			1.69			2.51			0.89			4.12			5.03		0.09		0.23			1.96		0.93		3.85			23.00		40.00
ZK707-YQ2	粗面岩		64.69		14.62			0.64			2.75			2.61			1.17			0.56			3.82			5.74		0.09		0.18			2.90		0.93		4.10			34.02		30.63
ZK804-YQ1	粗面岩		61.11		16.79			0.78			2.59			2.59			3.02			1.47			3.52			4.45		0.09		0.36			2.95		1.01		3.36			17.40		33.50
ZK1103-YQ1	粗安岩		57.91		16.93			1.07			4.14			3.13			5.20			2.44			2.62			3.88		0.14		0.36			1.95		0.91		2.72			20.37		33.48
ZK1603-YQ1	粗安岩		56.74		16.71			1.04			2.94			4.23			5.12			3.56			2.66			4.08		0.11		0.34			2.21		0.88		3.15			20.44		43.60
ZK1601-YQ1	粗面岩		63.91		16.49			0.60			2.86			1.46			2.47			1.36			3.66			4.40		0.08		0.22			2.25		1.05		3.03			17.89		39.83
ZK1207-YQ2	安山岩		52.39		15.83			0.97			3.02			4.76			5.48			2.66			2.97			2.24		0.17		0.30			9.04		0.94		2.23			17.50		30.07
样品	Ce	Pr		Nd			Sm			Eu			Gd			Tb			Dy			Ho			Er			Tm			Yb			Lu		Zn			Ga		Cs		Rb
ZK1105-YQ1	72.80	8.59		34.22			6.06			1.84			5.24			0.77			3.87			0.75			2.16			0.31			2.04			0.34		51.88			18.37		1.57		67.16
ZK801-YQ1	95.30	11.80		46.20			7.61			1.86			7.52			1.00			4.55			0.82			2.51			0.35			2.01			0.32		52.30			18.70		1.33		56.40
ZK707-YQ2	95.66	14.10		59.71			12.02			2.53			9.35			1.47			7.68			1.47			3.97			0.61			3.92			0.64		60.31			19.26		0.75		57.13
ZK804-YQ1	78.40	10.30		40.80			6.97			1.89			6.72			0.87			3.91			0.69			2.16			0.28			1.63			0.31		75.30			17.10		3.40		54.00
ZK1103-YQ1	70.04	8.52		33.40			6.29			1.86			5.06			0.84			4.08			0.76			2.12			0.30			1.89			0.35		137.10			19.26		3.13		65.35
ZK1603-YQ1	88.61	10.23		38.97			6.55			1.81			5.37			0.80			4.11			0.76			2.16			0.33			2.11			0.56		88.49			19.99		1.37		58.28
ZK1601-YQ1	81.31	9.38		34.53			5.67			1.61			4.73			0.70			3.47			0.65			1.97			0.28			1.84			0.31		68.35			19.62		2.11		88.60
ZK1207-YQ2	62.22	7.63		29.78			5.51			1.69			4.58			0.74			3.79			0.70			1.82			0.25			1.51			0.30		121.10			19.17		8.38		127.57
样品	Sr		Ba			Zr			Nb			Ta			Hf			Th			U			Pb			V		Cr			Co			Ni			Cu			(La/ Yb)_N			Eu^*
ZK1105-YQ1	597.35		1 514.0			232.91			9.52			0.62			7.19			3.85			0.58			23.46			78.98		12.16			9.93			2.24			8.84			11.54			1.00
ZK801-YQ1	285.00		1 269.0			266.00			14.00			0.73			7.70			3.99			0.39			24.70			45.80		10.70			3.90			2.30			7.40			13.45			0.75
ZK707-YQ2	208.74		1 278.0			364.45			16.66			0.82			8.96			5.69			0.62			39.21			22.58		11.06			6.83			12.92			13.28			5.28			0.73
ZK804-YQ1	385.00		1 053.0			318.00			10.00			0.53			6.82			3.20			0.52			26.50			40.00		7.80			6.37			2.21			5.12			13.89			0.84
ZK1103-YQ1	623.60		1 322.0			207.75			10.04			0.59			5.96			3.60			0.50			29.43			121.80		12.12			16.99			3.25			21.16			11.95			1.01
ZK1603-YQ1	659.61		1 201.0			238.98			12.38			0.74			5.65			7.11			1.21			16.80			146.04		28.41			22.53			19.18			27.27			13.99			0.93
ZK1601-YQ1	425.57		1 406.0			383.59			12.59			0.69			11.16			4.78			0.73			25.27			55.10		14.97			7.48			4.79			9.61			14.62			0.95
ZK1207-YQ2	448.04		720.3			172.28			4.56			0.32			4.43			2.41			0.32			13.43			142.80		17.20			19.41			6.54			11.72			13.48			1.03

样品	岩性		SiO₂		Al₂O₃			TiO₂			Fe₂O₃			FeO			CaO			MgO			K₂O			Na₂O		MnO		P₂O₅			LOI		A/ CNK		里特曼指数			Y		La
ZK1105-YQ1	粗安岩		58.63		16.96			0.88			3.34			2.93			4.78			1.89			3.30			4.70		0.07		0.42			1.82		0.85		3.95			20.16		34.75
ZK801-YQ1	粗面岩		64.27		16.04			0.73			2.19			1.69			2.51			0.89			4.12			5.03		0.09		0.23			1.96		0.93		3.85			23.00		40.00
ZK707-YQ2	粗面岩		64.69		14.62			0.64			2.75			2.61			1.17			0.56			3.82			5.74		0.09		0.18			2.90		0.93		4.10			34.02		30.63
ZK804-YQ1	粗面岩		61.11		16.79			0.78			2.59			2.59			3.02			1.47			3.52			4.45		0.09		0.36			2.95		1.01		3.36			17.40		33.50
ZK1103-YQ1	粗安岩		57.91		16.93			1.07			4.14			3.13			5.20			2.44			2.62			3.88		0.14		0.36			1.95		0.91		2.72			20.37		33.48
ZK1603-YQ1	粗安岩		56.74		16.71			1.04			2.94			4.23			5.12			3.56			2.66			4.08		0.11		0.34			2.21		0.88		3.15			20.44		43.60
ZK1601-YQ1	粗面岩		63.91		16.49			0.60			2.86			1.46			2.47			1.36			3.66			4.40		0.08		0.22			2.25		1.05		3.03			17.89		39.83
ZK1207-YQ2	安山岩		52.39		15.83			0.97			3.02			4.76			5.48			2.66			2.97			2.24		0.17		0.30			9.04		0.94		2.23			17.50		30.07
样品	Ce	Pr		Nd			Sm			Eu			Gd			Tb			Dy			Ho			Er			Tm			Yb			Lu		Zn			Ga		Cs		Rb
ZK1105-YQ1	72.80	8.59		34.22			6.06			1.84			5.24			0.77			3.87			0.75			2.16			0.31			2.04			0.34		51.88			18.37		1.57		67.16
ZK801-YQ1	95.30	11.80		46.20			7.61			1.86			7.52			1.00			4.55			0.82			2.51			0.35			2.01			0.32		52.30			18.70		1.33		56.40
ZK707-YQ2	95.66	14.10		59.71			12.02			2.53			9.35			1.47			7.68			1.47			3.97			0.61			3.92			0.64		60.31			19.26		0.75		57.13
ZK804-YQ1	78.40	10.30		40.80			6.97			1.89			6.72			0.87			3.91			0.69			2.16			0.28			1.63			0.31		75.30			17.10		3.40		54.00
ZK1103-YQ1	70.04	8.52		33.40			6.29			1.86			5.06			0.84			4.08			0.76			2.12			0.30			1.89			0.35		137.10			19.26		3.13		65.35
ZK1603-YQ1	88.61	10.23		38.97			6.55			1.81			5.37			0.80			4.11			0.76			2.16			0.33			2.11			0.56		88.49			19.99		1.37		58.28
ZK1601-YQ1	81.31	9.38		34.53			5.67			1.61			4.73			0.70			3.47			0.65			1.97			0.28			1.84			0.31		68.35			19.62		2.11		88.60
ZK1207-YQ2	62.22	7.63		29.78			5.51			1.69			4.58			0.74			3.79			0.70			1.82			0.25			1.51			0.30		121.10			19.17		8.38		127.57
样品	Sr		Ba			Zr			Nb			Ta			Hf			Th			U			Pb			V		Cr			Co			Ni			Cu			(La/ Yb)_N			Eu^*
ZK1105-YQ1	597.35		1 514.0			232.91			9.52			0.62			7.19			3.85			0.58			23.46			78.98		12.16			9.93			2.24			8.84			11.54			1.00
ZK801-YQ1	285.00		1 269.0			266.00			14.00			0.73			7.70			3.99			0.39			24.70			45.80		10.70			3.90			2.30			7.40			13.45			0.75
ZK707-YQ2	208.74		1 278.0			364.45			16.66			0.82			8.96			5.69			0.62			39.21			22.58		11.06			6.83			12.92			13.28			5.28			0.73
ZK804-YQ1	385.00		1 053.0			318.00			10.00			0.53			6.82			3.20			0.52			26.50			40.00		7.80			6.37			2.21			5.12			13.89			0.84
ZK1103-YQ1	623.60		1 322.0			207.75			10.04			0.59			5.96			3.60			0.50			29.43			121.80		12.12			16.99			3.25			21.16			11.95			1.01
ZK1603-YQ1	659.61		1 201.0			238.98			12.38			0.74			5.65			7.11			1.21			16.80			146.04		28.41			22.53			19.18			27.27			13.99			0.93
ZK1601-YQ1	425.57		1 406.0			383.59			12.59			0.69			11.16			4.78			0.73			25.27			55.10		14.97			7.48			4.79			9.61			14.62			0.95
ZK1207-YQ2	448.04		720.3			172.28			4.56			0.32			4.43			2.41			0.32			13.43			142.80		17.20			19.41			6.54			11.72			13.48			1.03