Geochronology and Geochemistry Characteristics of Volcanic Rocks from the Daxiyingzi Gold Deposit in Chifeng, Inner Mongolia

doi:10.19657/j.geoscience.1000-8527.2020.003

Abstract

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

CLC Number:

P588.1

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.

Figures/Tables 10

References 63

[1]	毛景文, 谢桂青, 张作衡, 等. 中国北方中生代大规模成矿作用的期次及其地球动力学背景[J]. 岩石学报, 2005,21(1) : 169-188.
[2]	HART C J, GOLDFARB R J, QIU Y M, et al. Gold deposits of the northern margin of the North China Craton: Multiple Late Paleozoic-Mesozoic mineralizing events[J]. Mineralium Deposita, 2002,37(3/4):326-351.
[3]	KUSKY T M, LI J. Paleoproterozoic tectonic evolution of the North China Craton[J]. Journal of Asian Earth Sciences, 2003,22:383-397.
[4]	YANG J H, WU F Y, WILDE S A. A review of the geodynamic setting of large-scale late Mesozoic gold mineralization in the North China Craton: an association with lithospheric thinning[J]. Ore Geology Reviews, 2003,23:125-152.
[5]	孙珍军. 华北克拉通北缘赤峰—朝阳地区金矿成矿作用研究[D]. 长春: 吉林大学, 2013: 1-194.
[6]	徐贵忠, 佘宏全, 杨忆, 等. 赤峰西部地区金矿床成矿时代及其成矿机制的新认识[J]. 矿床地质, 2001,20(2):99-106.
[7]	苗来成, 范蔚茗, 翟明国, 等. 金厂沟梁—二道沟金矿田内花岗岩类侵入体锆石的离子探针U-Pb年代学及意义[J]. 岩石学报, 2003,19(1):71-80.
[8]	李永刚, 翟明国, 杨进辉, 等. 内蒙古赤峰安家营子金矿成矿时代以及对华北中生代爆发成矿的意义[J]. 中国科学(地球科学), 2003,33(10):960-966.
[9]	姜能, 张文淮. 内蒙古赤峰莲花山金矿床成矿物理化学条件及成矿机理[J]. 地球化学, 1996,25(1):73-83.
[10]	李延河, 丁悌平. 内蒙古赤峰红花沟金矿稳定同位素研究[J]. 矿床地质, 1990,9(3):257-269.
[11]	邱玉民, 谢锡才. 内蒙古红花沟金矿床同位素地质特征及矿床成因探讨[J]. 矿产与地质, 1992,15(4):311-314.
[12]	FU L B, WEI J H, CHEN H Y, et al. The relationship between gold mineralization, exhumation of metamorphic core complex and magma cooling: Formation of the Anjiayingzi Au deposit, northern North China Craton[J]. Ore Geology Reviews, 2016,73(2):222-240.
[13]	罗镇宽, 苗来成. 中国绿岩型金矿床——认识、问题与展望[J]. 黄金科学技术, 1994,2(3):1-9.
[14]	陈伟军, 刘红涛. 赤峰—朝阳金矿化集中区主要金矿类型及其地质特征研究[J]. 黄金科学技术, 2006,14(5):1-7.
[15]	李永刚, 翟明国, 苗来成, 等. 内蒙古赤峰地区安家营子金矿成矿流体研究[J]. 岩石学报, 2004,20(4):961-968.
[16]	张长春, 王时麒, 张韬. 内蒙古金厂沟梁金矿床稳定同位素组成和矿床成因讨论[J]. 地质力学学报, 2002,8(2):156-164.
[17]	程裕棋. 中国区域地质概论[M]. 北京: 地质出版社, 1994: 1-152.
[18]	柳小明, 高山, 第五春荣, 等. 单颗粒锆石的20μm小斑束原位微区LA-ICP-MS U-Pb年龄和微量元素的同时测定[J]. 科学通报, 2007,52(2):228-235.
[19]	PUPIN J P. Zircon and granite petrology[J]. Contributions to Mineralogy and Petrology, 1980,3(8):207-220.
[20]	KOSCHEK G. Origin and significance of the SEM cathodoluminescence from zircon[J]. Journal of Microscopy, 2011,171(3):223-232.
[21]	MIDDLEMOST E A K. Naming materials in the magma/igneous rock system[J]. Earth-Science Reviews, 1994,37(3/4):215-224.
[22]	LE MAITRE R W. A proposal by the IUGS subcommission on the systematics of igneous rocks for a chemical classification of volcanic rocks based on the total alkali silica (TAS) diagram[J]. Australian Journal of Earth Sciences, 1984,31(2):243-255.
[23]	RICKWOOD P C. Boundary lines within petrologic diagrams which use oxides of major and minor elements[J]. Lithos, 1989,22(4):247-263.
[24]	IRVINE T N, BARAGAR W P A. A guide to the chemical classification of the common volcanic rocks[J]. Canadian Journal of Earth Sciences, 1971,8(5):523-548.
[25]	BOYNTON W V. Geochemistry of the earth elements: Meteorite studies[M] //HENDERSON R. Rare Earth Element Geochemistry: Developments in Geochemistry. Amsterdam: Elsevier, 1984: 89-92.
[26]	SUN S S, MCDONOUGH W F. Chemical and isotopic systematics of oceanic basalts: Implications for mantle composition and processes[M] //SAUNDERS A D, NORRY M J. Magmatism in the Ocean Basalts. London:Geological Society of London, 1989: 313-345.
[27]	付乐兵. 华北克拉通北缘赤峰—朝阳地区中生代构造岩浆演化与金成矿 [D]. 武汉: 中国地质大学(武汉), 2012: 1-175.
[28]	段培新, 李长民, 刘翠, 等. 内蒙古赤峰金厂沟梁金矿区花岗岩类年代学、地球化学特征及其地质意义[J]. 岩石学报, 2014,30(11):3189-3202.
[29]	侯万荣. 内蒙古哈达门沟金矿床与金厂沟梁金矿床对比研究[D]. 北京: 中国地质科学院, 2011: 1-180.
[30]	宋维民, 邢德和, 郭胜哲, 等. 内蒙古金厂沟梁西对面沟岩体岩石地球化学特征及意义[J]. 地质与资源, 2009,18(2):134-139.
[31]	陈井胜, 彭艳东, 刘淼, 等. 辽西建平烧锅营子金矿花岗岩的锆石U-Pb年代学、地球化学特征及地质意义[J]. 中国地质, 2016,43(1):395-409.
[32]	李洪奎, 时文革, 李逸凡, 等. 山东胶东地区金矿成矿时代研究[J]. 黄金科学技术, 2013,21(3):1-9.
[33]	林博磊, 李碧乐. 胶东玲珑花岗岩的地球化学、U-Pb 年代学、Lu-Hf 同位素及地质意义[J]. 成都理工大学学报(自然科学版), 2013,40(2):147-160.
[34]	韩世炯, 孙景贵, 邢树文, 等. 中国东北部陆缘内生金矿床成因类型、成矿时代及地球动力学背景[J]. 吉林大学学报(地球科学版), 2013,43(3):716-733.
[35]	GREEN T H. Significance of Nb/Ta as an indicator of geochemical processes in the crust-mantle system[J]. Chemical Geology, 1995,120(3):347-359.
[36]	TISCHENDORF G, PAELCHEN W. Classification of granitoids[J]. Zeitschrift Fuer Geologische Wissenschaften, 1985,13(5):615-627.
[37]	WILSON M. Igneous Petrogenesis [M]. London: Unwin Hyman Press, 1989: 295-323.
[38]	SAUNDERS A D, STOREY M, KENT R W, et al. Consequences of plume-lithosphere interactions, magmatism and the cause of continental breakup[J]. Geological Society, 1992,68(1):41-60.
[39]	MCKENZIE D, O’NIONS R K. Partial melt distributions from inversion of rare earth element concentrations[J]. Journal of Petrology, 1991,32(5):1021-1091.
[40]	WOODHEAD J D, HERGT J M, DAVIDSON J P, et al. Hafnium isotope evidence for‘conservative’ element mobility during subduction zone processes[J]. Earth and Planetary Science Letters, 2001,192(3):331-346.
[41]	ALBAREDE F, LUAIS B, FITTON G, et al. The geochemical regimes of Piton de la Fournaise volcano(Reunion) during the last 530000 years[J]. Journal of Petrology, 1997,38(2):171-201.
[42]	GEIST D, NAUMANN T, LARSON P. Evolution of Galapagos magmas: mantle and crustal fractionation without assimilation[J]. Journal of Petrology, 1998,39(5):953-971.
[43]	ZHOU X M, LI W X. Origin of Late Mesozoic igneous rocks in Southeastern China: Implications for lithosphere subduction and underplating of mafic magmas[J]. Tectonophysics, 2000,326(3/4):269-287.
[44]	杨扬, 高福红, 陈井胜, 等. 赤峰地区中生代火山岩锆石U-Pb年代学证据[J]. 吉林大学学报(地球科学版), 2012,42(增):256-268.
[45]	XU W L, PEI F P, WANG F, et al. Spatial-temporal relationships of Mesozoic volcanic rocks in NE China: Constraints on tectonic overprinting and transformations between multiple tectonic regimes[J]. Journal of Asian Earth Science, 2013,74(18):167-193.
[46]	WOOD D A. The application of a Th-Hf-Ta diagram to problems of tectonic magmatic classification and to establishing the nature of crustal contamination of basaltic lavas of the British Tertiary Volcanic Province[J]. Earth and Planetary Science Letters, 1980,50(1):11-30.
[47]	MESCHEDE M. A method of discriminating between different types of mid-ocean ridge basalts and continental tholeiites with the Nb-Zr-Y diagram[J]. Chemical Geology, 1986,56(3/4):207-218.
[48]	PEARCE J A, CANN J R. Tectonic setting of basic volcanic-rocks determined using trace-element analyses[J]. Earth and Planetary Science Letters, 1973,19(2):290-300.
[49]	PEARCE J A, NORRY M J. Petrogenetic implications of Ti, Zr, Y, and Nb variations in volcanic rocks[J]. Contributions to Mineralogy and Petrology, 1979,69(1):33-47.
[50]	陈志广, 张连昌, 周新华, 等. 满洲里新右旗火山岩剖面年代学和地球化学特征[J]. 岩石学报, 2006,22(12):2971-2986.
[51]	张玉涛, 张连昌, 英基丰, 等. 大兴安岭北段塔河地区早白垩世火山岩地球化学及源区特征[J]. 岩石学报, 2007,23(11) : 2811-2822.
[52]	LIU C F, ZHOU Z G, WANG G S, et al. Geochronology and geochemistry of the Late Jurassic bimodal volcanic rocks from Hailisen area, central-southern Great Xing’an Range, Northeast China[J]. Geological Journal, 2018,53(5):2099-2117.
[53]	赵越, 徐刚, 张拴宏, 等. 燕山运动与东亚构造体制的转变[J]. 地学前缘, 2004,11(3):319-328.
[54]	于海飞, 张志诚, 帅歌伟, 等. 北京十三陵—西山髫髻山组火山岩年龄及其地质意义[J]. 地质论评, 2016,62(4):807-826.
[55]	YANG W, LI S G. Geochronology and geochemistry of the Mesozoic volcanic rocks in Western Liaoning:Implications for lithospheric thinning of the North China Craton[J]. Lithos, 2008,102(1):88-117.
[56]	MA Q, ZHENG J P, XU Y G, et al. Are continental “adakites” derived from thickened or foundered lower crust?[J]. Earth and Planetary Science Letters, 2015,419:125-133.
[57]	LI S Z, ZHAO G C, SUN M, et al. Mesozoic, not Paleoproterozoic SHRIMP U-Pb zircon ages of two Liaoji granites, eastern block, North China Craton[J]. International Geology Review, 2004,46(2):162-176.
[58]	WU F Y, YANG J H, WILDE S A, et al. Geochronology, petrogenesis and tectonic implications of Jurassic granites in the Liaodong Peninsula, NE China[J]. Chemical Geology, 2005,221(1/2):127-156.
[59]	YANG K F, FAN H R, SANTOSH M, et al.Reactivation of the Archean lower crust: Implications for zircon geochronology, elemental and Sr-Nd-Hf isotopic geochemistry of Late Mesozoic granitoids from northwestern Jiaodong Terrane, the North China Craton[J]. Lithos, 2012,146/147(8):112-127.
[60]	MA L, JIANG S Y, DAI B Z, et al.Multiple sources for the origin of Late Jurassic Linglong adakitic granite in the Shandong Peninsula, eastern China: Zircon U-Pb geochronological, geochemical and Sr-Nd-Hf isotopic evidence [J]. Lithos, 2013,162/163(3):251-263.
[61]	许文良, 王枫, 裴福萍, 等. 中国东北中生代构造体制与区域成矿背景:来自中生代火山岩组合时空变化的制约[J]. 岩石学报, 2013,29(2):339-353.
[62]	唐杰, 许文良, 王枫, 等. 古太平洋板块在欧亚大陆下的俯冲历史:东北亚陆缘中生代—古近纪岩浆记录[J]. 中国科学(地球科学), 2018,48(5):549-583.
[63]	HILDE T W C, UYEDA S, KROENKE L. Evolution of the western Pacific and its margin[J]. Tectonophysics, 1977,38(1/2):145-165.

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