中国区域地质2001，Vol.20Issue(1)：52-57,6.
东昆仑东端扎那合惹地区元古宙蛇绿岩
Proterozoic ophiolite in the Zhanahere area in the east section of the East Kunlun
摘要
Abstract
Proterozoic ophiolite in the Zhanahere area， East Kunlun， consists mainly of ultramafic cumulate rocks． The petrochemical and mineral compositions of the cumulate rocks exhibit a wide variation range． Trace elements and rare earth elements show enrichment in incompatible elements， and Nd isotope geochemistry shows that it originated from the depleted mantle source region． Ultramafic cumulate rock has a Sm-Nd isochron age of 1480±3 Ma， and the garnet amphibolite closely related to it has an 40Ar-39Ar plateau ages of 881．8±4．7 Ma （garnet） and 852．2±1．0 Ma （amphibole）， which respectively represent the timing of spreading and subduction Central Kunlun paleo-ocean limit．关键词
东昆仑/扎那合惹/元古宙/蛇绿岩分类
天文与地球科学引用本文复制引用
王秉璋,张森琦,张智勇,王瑾..东昆仑东端扎那合惹地区元古宙蛇绿岩[J].中国区域地质,2001,20(1):52-57,6.
