Petrography,mineral chemistry and shock metamorphism of Yamato 984028 lherzolitic shergottite

作     者：HU Sen FENG Lu LIN YangTing 

作者机构：Key Laboratory of the Earth's Deep Interior Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China Graduate University of Chinese Academy of Sciences Beijing 100049 China 

出 版 物：《Chinese Science Bulletin》 (中国科学通报)

年 卷 期：2011年第56卷第15期

页      面：1579-1587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] 

基　　金：supported by the Knowledge Innovation Program of the Chinese Academy of Sciences (KZCX2-YW-110 and KZCX2-YW-Q08) 

主　　题：矿物岩石学 矿物化学 变质作用 二氧化钛 激波诱导 撞击过程 陆地表面 压力淬火 

摘      要：Y984028 is a new lherzolitic shergottite,consisting of poikilitic and non-poikilitic *** mafic silicates are FeO-poor,and the chromite is TiO 2-poor in the poikilitic lithology compared to the grains in the non-poikilitic *** meteorite shares similarmineral petrography andmineral chemistry with GRV 99027,but is not paired with the latter because of their different shock-induced features.Y984028 was severely shocked and experienced no significant thermal metamorphism after the main impact ***,Y984028 serves as a probe for the study of meteorite impact processes on terrestrial *** melt veins in Y984028 are characterized by the absence of any high-pressure polymorphs,the presence of abundant smallmineral fragments,and the prevailing granulation textures of olivine and *** features are consistent with adiabatic melting during the release of shock-induced high-pressure and quenching at ambient pressure.