西北地质2026，Vol.59Issue(3)：19-41,23.DOI:10.12401/j.nwg.2025086
中国西北地区近十年中高级变质作用研究进展
Progresses in the Study of Metamorphism of Northwest China in the Past Decade
摘要
Abstract
The study of metamorphism plays an important role in deciphering the composition and evolution of the deep crust,restoring the thermal evolution history of the crust,and guiding the prospecting.Both ancient continental blocks and Phanerozoic orogenic belts in northwest China are the key areas for the study of meta-morphism in China.This paper reviews ultra-high pressure(UHP)metamorphism,ultra-high temperature(UHT)metamorphism,crustal anatexis,fluid activity in subduction zone and metamorphic mineral prospecting in north-west China in the past decade.In terms of UHP metamorphism,based on the new discoveries of evidences of UHP metamorphism represented by coesite,the fact of deep subduction of rocks has been further strengthened for previously established UHP metamorphic belts,and the East Kunlun UHP metamorphic belt was firstly es-tablished.In terms of UHT metamorphism,progresses in P-T paths,metamorphic ages and genesis of UHT metamorphism have been achieved in the Altai and Altyn orogen,and new outcrops of UHT metamorphic rocks have been identified in the East Kunlun,Qinling orogens and western Qaidam.The study of partial melting has been the focus of the study of orogenic metamorphism in the past decade,mainly including the products of par-tial melting,the tectonic setting and mechanism of melting.Studies on fluid activities in subduction zones focus on fluid identification and composition characterization,which provide a basis for further study of mass transfer in subduction zones.New discoveries of metamorphic ore deposits,represented by rutile and crystalline graphite,have been made.关键词
西北地区/超高压变质/超高温变质/部分熔融/俯冲带流体/变质矿产Key words
northwest China/UHP metamorphism/UHT metamorphism/crustal anatexis/subduction zone fluid activity/metamorphic ore deposit分类
天文与地球科学引用本文复制引用
高一杰,辜平阳,张江伟,孔会磊,齐琳琳..中国西北地区近十年中高级变质作用研究进展[J].西北地质,2026,59(3):19-41,23.基金项目
陕西省自然科学基础研究计划项目(2024JC-YBQN-0344、2023-JC-ZD-14),国家自然科学基金(42402063),中国地质调查局项目(DD20230032、DD20240115)联合资助. （2024JC-YBQN-0344、2023-JC-ZD-14）
