Geochronology, petrogenesis petrogenesis and tectonic settings of pre- and syn-ore granites from the W-Mo deposits (East Kounrad, Zhanet and Akshatau), Central Kazakhstan

doi:10.1016/j.lithos.2016.01.023

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院矿产资源研究重点实验室

	Geochronology, petrogenesis petrogenesis and tectonic settings of pre- and syn-ore granites from the W-Mo deposits (East Kounrad, Zhanet and Akshatau), Central Kazakhstan
	Li, GuangMing 1; Cao, MingJian 1,2; Qin, KeZhang 1; Evans, Noreen J.3; Hollings, Pete 2; Seitmuratova, Eleonora Yusupovha 4
刊名	LITHOS
	2016-05-01
卷号	252 页码:16-31
关键词	Highly fractionated I-type granites Leucogranites Syn-collision East Kounrad Zhanet Akshatau
DOI	10.1016/j.lithos.2016.01.023
文献子类	Article
英文摘要	There is significant debate regarding the mineralization ages of the East Kounrad, Zhanet and Akshatau W-Mo deposits of Central Kazakhstan, and the petrogenesis and tectono-magmatic evolution of the granites associated with these deposits. To address these issues, we present molybdenite Re-Os dating, zircon U-Pb dating, whole rock geochemistry as well as Sr-Nd-Pb and zircon O-Hf isotopic analyses on the pre-mineralization and ore forming granites. U-Pb dating of zircons from pre-mineralization granitic rocks yield Late Carboniferous ages of 320-309 Ma, whereas ore-forming granites have Early Permian ages of 298-285 Ma. Molybdenite Re-Os isotopic data indicate a mineralization age of similar to 296 Ma at East Kounrad, similar to 294 Ma at Akshatau and similar to 285 Ma at Zhanet. The pre-ore and ore-forming granites are high-K calc-alkaline, metaluminous to slightly peraluminous I-type granites. The pre-mineralization granites are relatively unfractionated, whereas the ore-forming granites are highly fractionated. The fractionating mineral phases are probably K-feldspar, apatite, Ti-bearing phases and minor plagioclase. The pre-mineralization and ore-forming rocks are characterized by similar Sr-Nd-Pb-Hf-O isotopic compositions ((Sr-87/Sr-86)(i) = 0.70308-0.70501, epsilon(Nd) (t) = -0.5 to +2.8, Pb-207/Pb-204 = 15.60-15.82, zircon epsilon(Hf) (t) = +1.2 to + 15.6 and delta O-18 = +4.6 to +10.3 parts per thousand), whole rock T-DM(C) (Nd) (840-1120 Ma) and zircon T-DM(C) (Hf) (320-1240 Ma). The isotopic characteristics are consistent with a hybrid magma source caused by 10-30% assimilation of ancient crust by juvenile lower crust. The geochronology and geochemistry of these granites show that the Late Carboniferous pre-mineralization granitic rocks formed during subduction, whereas the Early Permian ore-forming, highly fractionated granite probably underwent significant fractionation with a restite assemblage of K-feldspar, apatite, Ti-bearing phases and minor plagioclase and developed during collision between the Yili and Kazakhstan terranes commenced at the latest Late Carboniferous. (c) 2016 Elsevier B.V. All rights reserved.
WOS关键词	A-TYPE GRANITES ; PALEOZOIC CRUSTAL GROWTH ; ASIAN OROGENIC BELT ; PORPHYRY CU DEPOSIT ; HF-O ISOTOPES ; ZIRCON U-PB ; I-TYPE GRANITOIDS ; TRACE-ELEMENT ; VOLCANIC-ROCKS ; CALC-ALKALINE
WOS研究方向	Geochemistry & Geophysics ; Mineralogy
语种	英语
WOS记录号	WOS:000374599800002
资助机构	National Natural Sciences Foundation of China(41390444 ; National Natural Sciences Foundation of China(41390444 ; Special Fund for Scientific Research in the Public Interest of Ministry of Land and Resources of China(201411024-5) ; Special Fund for Scientific Research in the Public Interest of Ministry of Land and Resources of China(201411024-5) ; Postdoctoral Science Foundation of China(2014M550834) ; Postdoctoral Science Foundation of China(2014M550834) ; China Scholarship Council Fund ; China Scholarship Council Fund ; 41402081) ; 41402081) ; National Natural Sciences Foundation of China(41390444 ; National Natural Sciences Foundation of China(41390444 ; Special Fund for Scientific Research in the Public Interest of Ministry of Land and Resources of China(201411024-5) ; Special Fund for Scientific Research in the Public Interest of Ministry of Land and Resources of China(201411024-5) ; Postdoctoral Science Foundation of China(2014M550834) ; Postdoctoral Science Foundation of China(2014M550834) ; China Scholarship Council Fund ; China Scholarship Council Fund ; 41402081) ; 41402081)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/53520]
专题	地质与地球物理研究所_中国科学院矿产资源研究重点实验室
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, POB 9825, Beijing 100029, Peoples R China 2.Lakehead Univ, Dept Geol, 955 Oliver Rd, Thunder Bay, ON P7B 5E1, Canada 3.Curtin Univ, Dept Appl Geol, John de Laeter Ctr, TIGeR, Perth, WA 6945, Australia 4.K Satpaev Inst Geol Sci, Lab Geol Format, Alma Ata 050010, Kazakhstan
推荐引用方式 GB/T 7714	Li, GuangMing,Cao, MingJian,Qin, KeZhang,et al. Geochronology, petrogenesis petrogenesis and tectonic settings of pre- and syn-ore granites from the W-Mo deposits (East Kounrad, Zhanet and Akshatau), Central Kazakhstan[J]. LITHOS,2016,252:16-31.
APA	Li, GuangMing,Cao, MingJian,Qin, KeZhang,Evans, Noreen J.,Hollings, Pete,&Seitmuratova, Eleonora Yusupovha.(2016).Geochronology, petrogenesis petrogenesis and tectonic settings of pre- and syn-ore granites from the W-Mo deposits (East Kounrad, Zhanet and Akshatau), Central Kazakhstan.LITHOS,252,16-31.
MLA	Li, GuangMing,et al."Geochronology, petrogenesis petrogenesis and tectonic settings of pre- and syn-ore granites from the W-Mo deposits (East Kounrad, Zhanet and Akshatau), Central Kazakhstan".LITHOS 252(2016):16-31.