Geology and Genesis of the Mafic-Ultramafic Complexes in the Huangshan-Jingerquan (HJ) Belt, East Xinjiang

作     者：顾连兴 诸建林 郭继春 廖静娟 严正富 杨浩 王金珠 

作者机构：Department of Earth Sciences Nanjing University Nanjing Geological Team No. 6 Xinjiang Bureau of Geology and Mineral Resources Xinjiang 

出 版 物：《Chinese Journal Of Geochemistry》 (中国地球化学学报)

年 卷 期：1995年第14卷第2期

页      面：97-116页

核心收录：

学科分类：0709[理学-地质学] 070901[理学-矿物学、岩石学、矿床学] 07[理学] 

主　　题：地质学 铁镁质超基性岩 橄榄岩 辉岩 新疆 

摘      要：More than twenty mafic-ultramafic complexes. which host several medium-or large-sized Cu-Ni deposits, occur along the Huangshan-Jingerquan (HJ ) belt in EastXinjiang. Rock types in these complexes are predominated by peridotite, pyroxene peri-dotite, olivine pyroxenite, gabbronorite, orthopyroxene gabbro, troctolite, gabbro anddiorite. The ultramafic rocks are relatively Fe-euriched and are characterised by an as-semblage of olivine + orthopyroxene + clinopyroxene + hornblend ±plagioclase withoutobvious metamorphic textures. Chemically these complexes are relatively Fe-enrichedand show a tholeiitic trend of evolution. The complexes in this belt are intruded underthe extensional environment in a Mid-Carboniferous back-arc basin. They call be consid-ered as a new type of mafic-ultramafic complexes in orogenic belts, as designated by thename of the East-Xinjiang-type complexes.