Geochemical characteristics, source area properties and tectonic significance of Ore bearing metasedimentary rocks from Tebai gold deposit in Alxa right banner area

CHENG Xian-yu; TIAN Jian; LI Yike; DONG Man-hua; CAO Kan; ZHANG Tian-fu

doi:10.19948/j.12-1471/P.2023.01.05

2023 Vol. 46, No. 1

Article Contents

Article navigation > North China Geology > 2023 > 46(1): 42-49,60

Next Article Previous Article

CHENG Xian-yu, TIAN Jian, LI Yike, DONG Man-hua, CAO Kan, ZHANG Tian-fu. 2023. Geochemical characteristics, source area properties and tectonic significance of Ore bearing metasedimentary rocks from Tebai gold deposit in Alxa right banner area. North China Geology, 46(1): 42-49,60. doi: 10.19948/j.12-1471/P.2023.01.05

Citation:

CHENG Xian-yu, TIAN Jian, LI Yike, DONG Man-hua, CAO Kan, ZHANG Tian-fu. 2023. Geochemical characteristics, source area properties and tectonic significance of Ore bearing metasedimentary rocks from Tebai gold deposit in Alxa right banner area. North China Geology, 46(1): 42-49,60. doi: 10.19948/j.12-1471/P.2023.01.05

Geochemical characteristics, source area properties and tectonic significance of Ore bearing metasedimentary rocks from Tebai gold deposit in Alxa right banner area

1. China Geological Survey Tianjin Geological Survey Center, Tianjin 300170, China;
2. North China Center of GeoscienceInnovation, Tianjin 300170, China;
3. Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037;
4. Inner Mongolia Geology Limited Company, Hohhot 010010, China

Received Date: 12 March 2022

Abstract

Abstract

In this paper, geochemical analysis of the ore bearing metasedimentary rocks of the Tebai gold deposit in Alxa Right Banner is carried out, The main lithology is mica quartz schist, metamorphic siltstone, metamorphic lithic quartz sandstone, etc; The average content of SiO₂ is 62.39%, the average content of Al₂O₃ is 15.40%, the average content of Fe₂O₃ is 6.57%, the average content of MgO is 3.84%, the average content of CaO is 2.31%, the average content of K₂O is 2.65%, the average content of Na₂O is 2.09%.The REE patterns of curves are consistent, LREE/HREE=5.75~8.34, the average value is 7.18,(La/Yb)_N=5.39~8.38, the average value is 6.83, Eu negative anomaly is obvious, LREE are obviously enriched relative to HREE; Rb-K₂O diagram、Ni-TiO₂ diagram and La/Yb-ΣREE diagram show that the parent rocks may originate from granites; Combined with paleocurrent characteristics and detrital zircon age evidence, it is speculated that the provenance may come from granite in Beidashan area.Combined with the rock assemblage characteristics, tectonic combined characteristics and Geochemical characteristics of Ore bearing metasedimentary rocks in Tebai, it is considered that the source rocks were formed in a tectonic environment of continental island-arc.
- Alxa block /
- Tebai gold deposite /
- ore-hosting strata /
- Metasedimentary rock /
- geochemistry /
- continental island-arc

FullText(HTML)

References

[1]	张建新,宫江华.阿拉善地块性质和归属的再认识[J].岩石学报,2018,34(4):940-962. Google Scholar
[2]	程先钰,李以科,董满华,等.阿拉善右旗特拜金矿赋矿地层时代厘定及其地质意义[J].吉林大学学报(地球科学版),2019,49(6):1565-1577. Google Scholar
[3]	杨轩,李以科,姜高珍,等.内蒙古阿拉善盟特拜金矿地质特征与矿床成因初探[J].矿床地质,2014,33(增刊):977-978. Google Scholar
[4]	杨轩,李以科,姜高珍.内蒙古特拜金矿流体包裹体特征与成矿作用[J].地质与勘探,2018,54(5):877-889. Google Scholar
[5]	许磊,刘永团.内蒙古阿拉善右旗特拜金矿矿床成因及找矿标志[J].中国矿业,2017,26(增刊):227-230. Google Scholar
[6]	周良仁.阿拉善陆块中的北大山裂谷带[J].西北地质,1996,17(4):1-11. Google Scholar
[7]	LIU Q, ZHAO G C, SUN M, et al.Early Paleozoic Subduction Processes of the Paleo-Asian Ocean:Insights from Geochronology and Geochemistry of Paleozoic Plutons in the Alxa Terrane[J].Lithos, 2016, 262:546-560. Google Scholar
[8]	宫江华,张建新,于胜尧.阿拉善地块南缘龙首山岩群及相关岩石的起源和归属-来自LA-ICP-MS锆石U-Pb年龄的制约[J].岩石矿物学杂志,2011,30(5):795-818. Google Scholar
[9]	张北航.阿拉善地块南缘古生代构造属性:来自碎屑锆石年龄和变形的限定[D].中国地质科学院,2019. Google Scholar
[10]	卜文瑞,王廷印.内蒙古阿拉善南部地区富Cr、Ni斜长花岗岩体的发现及其地质意义[J].地质论评,2001,21(1):108. Google Scholar
[11]	宫江华,张建新,于胜尧,等.西阿拉善地块-2.5 Ga TTG岩石及地质意义[J].科学通报,2012,57(28/29):2715-2728. Google Scholar
[12]	DAN W, LI XH, WANG Q, et al.Neoproterozoic S-type Granites in the Alxa Block, Western most North China and Tectonic Implications:in Situ Zircon U-Pb-Hf-O Isotopic and Geochemical Constraints[J].American Journal of Science, 2014, 314(1):110-153. Google Scholar
[13]	ZHOU X C, ZHANG H F, LUO B J, et al.Origin of High Sr/Ytype Granitic Magmatism in the Southwestern of the Alxa Block, Northwest China[J].Lithos, 2016, (256–257):211-227. Google Scholar
[14]	史兴俊,张磊,王涛,等.阿拉善北部宗乃山地区片麻岩锆石U-Pb 年龄、Hf同位素特征及其构造归属探讨[J].岩石学报,2016,32(11):3518-3536. Google Scholar
[15]	BHATIA M R.Plate Tectonics and Geochemical Composition of Sandstones[J].The Journal of Geology, 1983, 91(6):611-627. Google Scholar
[16]	BHATIA M R, CROOK K A W.Trace element characteristics of graywackes and tectonic setting discrimination of sedimentary basins[J].Contributions to Mineralogy and Petrology, 1986, 92(2):181-193. Google Scholar
[17]	TAYLOR S R, MCLENNAN S M.The Continental Crust:Its Composition and Evolution[J].Ocford:Blackwell Scientific Publications, 1985, 312. Google Scholar
[18]	WRONKIEWICZ D J, CONDIE K C.Geochemistry of Archean shales from the Witwatersrand Superground, South Africa:Source-area weathering and provenance[J].Geochimica et CosmochimicaActa, 1987, 51(9):2401-2416. Google Scholar
[19]	FLOYD P A, WINCHESTER J A, PARK R G.Geochemistry and tectonisetting of Lewisian clastic metase diments from the Early Proterozoic Loch Maree Group of Gairloch, N W Scotland[J].Precam brian Research, 1989, 45(1-3):203-214. Google Scholar
[20]	沈渭洲,舒良树,向磊,等.江西井冈山地区早古生代沉积岩的地球化学特征及其对沉积环境的制约[J].岩石学报, 2009, 25(10):2442-2458. Google Scholar
[21]	BHATIA M R.Morphological structure of bismuth-doped n-type amorphous germanium sulphide semiconductors [J].Journal of Materials Geology, 1986, 5:1281-1284. Google Scholar
[22]	顾雪祥,刘建明,Schulz O,等.江南造山带雪峰隆起区元古宙浊积岩沉积构造背景的地球化学制约[J].地球化学,2003,32(5):406-421. Google Scholar
[23]	李双应,李任伟,岳书仓,等.安徽肥西中生代碎屑岩地球化学特征及其对物源制约[J].岩石学报,2004,20(3):667-676. Google Scholar
[24]	包汉勇,杨风丽,王丹萍,等.苏南地区中、古生界沉积岩地球化学特征以圣科1井为例[J].吉林大学学报(地球科学版),2011,41(1):29-38. Google Scholar
[25]	ALLAGRE C J.Quantitative models of trace plant[J].Earth and Planetary Science Letters, 1978, 38(1):1-25. Google Scholar
[26]	ROSER B P, KORSCH R J.Determination of tectonic setting of sandstone-mudstone suites using content and ratio[J].The Journal of Geology, 1986, 94(5):635-650. Google Scholar
[27]	和政军,李锦轶,莫申国,等.漠河前陆盆地砂岩岩石地球化学的构造背景和物源区分析[J].中国科学,1988,33(12):1219-1226. Google Scholar
[28]	张建军,牟传龙,周恳恳,等.滇西户撒盆地芒棒组砂岩地球化学特征及物源区和构造背景分析[J].地质学报,2017,91(5):1083-1096. Google Scholar
[29]	王丛山,陈文西,单福龙.西藏雄巴地区中新世雄巴组砂岩地球化学特征及对物源区、构造背景的指示[J].地质学报,2016,90(6):1195-1207. Google Scholar
[30]	M.M.BUSLOV, I, YU.SAPHONOVA, T.WATANABE, et al.Evolution of the Paleo-Asian Ocean(Altai-Savan Region, Central Asia)and collision of possible Gondwana-derived terranes with the southern marginal part of the Siberian continent[J].Geosciences Journal, 2001, 5(3):203-224. Google Scholar