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  2. 地质与地球物理研究所
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  4. 中国科学院矿产资源研究重点实验室
Potassium isotope fractionation during granite differentiation and implications for crustal K isotope heterogeneity

文献类型：期刊论文

作者Ding, Zi-Yi1,5; Liu, Shan-Ke5; Su, Ben-Xun1,5; Bai, Yang4; Pan, Qi-Qi1,3; Pang, Kwan-Nang2
刊名LITHOS
出版日期2023-07-01
卷号448页码:8
ISSN号0024-4937
关键词K isotopes Magma differentiation Tagong pluton Mafic microgranular enclaves Crustal heterogeneity
DOI10.1016/j.lithos.2023.107176
英文摘要Granitoids, as a major component of the Earth's crust, have large K isotopic variations (delta K-41 = -1.0 parts per thousand to 0.4 parts per thousand), but K isotope fractionation during granite differentiation is poorly constrained. Here, we examined K isotopic compositions of a suite of well-characterized crustal igneous rocks (quartz diorite, granodiorite and monzogranite) from the Tagong pluton, northeastern Tibetan Plateau. The rocks display increasing delta K-41 in the following order: quartz diorite (delta K-41 = -0.798 parts per thousand to -0.538 parts per thousand) < granodiorite (delta K-41 = -0.520 parts per thousand to -0.378 parts per thousand) < monzonite granite (delta K-41 = -0.439 parts per thousand and - 0.436 parts per thousand). The delta K-41 values are positively correlated with SiO2 and K2O contents and negatively with MgO and Al2O3 contents, indicating up to similar to 0.42 parts per thousand fractionation during magmatic differentiation. Taking into account mineral assemblage, fractional crystallization of K-rich phases (mica and K-feldspar) likely plays a dominant role in K isotopic variation. In addition, mafic microgranular enclaves (MMEs) commonly occurring in granitoid rocks show comparable delta K-41 values (-0.489 parts per thousand to -0.416 parts per thousand) to their corresponding host rocks, implying their schlieren origin. These features demonstrate that K isotope heterogeneity of the crust could have been induced by magma differentiation in addition to source control.
WOS关键词EASTERN TIBETAN PLATEAU ; MC-ICP-MS ; GARZE FOLD BELT ; MAGMATIC DIFFERENTIATION ; TRIASSIC GRANITOIDS ; TECTONIC EVOLUTION ; PETROGENESIS ; EMPLACEMENT
资助项目Second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK0802] ; Beijing Natural Science Foundation[8202048] ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences[TEC 202103] ; Youth Innovation Promotion Association, Chinese Academy of Sciences
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
出版者ELSEVIER
WOS记录号WOS:000984870400001
资助机构Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; Beijing Natural Science Foundation ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Experimental Technology Innovation Fund of the Institute of Geology and Geophysics, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/110886]  
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
地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Liu, Shan-Ke; Su, Ben-Xun
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Acad Sinica, Inst Earth Sci, Taipei, Taiwan
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
4.Taiyuan Univ Technol, Coll Min Engn, Taiyuan 030024, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Ding, Zi-Yi,Liu, Shan-Ke,Su, Ben-Xun,et al. Potassium isotope fractionation during granite differentiation and implications for crustal K isotope heterogeneity[J]. LITHOS,2023,448:8.
APA Ding, Zi-Yi,Liu, Shan-Ke,Su, Ben-Xun,Bai, Yang,Pan, Qi-Qi,&Pang, Kwan-Nang.(2023).Potassium isotope fractionation during granite differentiation and implications for crustal K isotope heterogeneity.LITHOS,448,8.
MLA Ding, Zi-Yi,et al."Potassium isotope fractionation during granite differentiation and implications for crustal K isotope heterogeneity".LITHOS 448(2023):8.

入库方式： OAI收割

来源：地质与地球物理研究所

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