Coesite in suevites from the Chesapeake Bay impact structure

doi:10.1111/maps.12638

CORC > 深海科学与工程研究所 > 中国科学院深海科学与工程研究所 > 深海科学研究部 > 深海极端环境模拟研究实验室

	Coesite in suevites from the Chesapeake Bay impact structure
	Belkin, Harvey E.1; Chou, I-Ming2 ; Horton, J. Wright, Jr.1; Jackson, John C.1
刊名	METEORITICS & PLANETARY SCIENCE
	2016-05-01
卷号	51 期号:5 页码:946-965
DOI	10.1111/maps.12638
文献子类	Article
英文摘要	The occurrence of coesite in suevites from the Chesapeake Bay impact structure is confirmed within a variety of textural domains insitu by Raman spectroscopy for the first time and in mechanically separated grains by X-ray diffraction. Microtextures of coesite identified insitu investigated under transmitted light and by scanning electron microscope reveal coesite as micrometer-sized grains (1-3 mu m) within amorphous silica of impact-melt clasts and as submicrometer-sized grains and polycrystalline aggregates within shocked quartz grains. Coesite-bearing quartz grains are present both idiomorphically with original grain margins intact and as highly strained grains that underwent shock-produced plastic deformation. Coesite commonly occurs in plastically deformed quartz grains within domains that appear brown (toasted) in transmitted light and rarely within quartz of spheroidal texture. The coesite likely developed by a mechanism of solid-state transformation from precursor quartz. Raman spectroscopy also showed a series of unidentified peaks associated with shocked quartz grains that likely represent unidentified silica phases, possibly including a moganite-like phase that has not previously been associated with coesite.
URL标识	查看原文
WOS关键词	SHOCK METAMORPHISM ; VREDEFORT DOME ; SOUTH-AFRICA ; CRYSTALLINE ROCKS ; SILICA POLYMORPH ; VITREOUS SILICA ; METEOR CRATER ; QUARTZ ; STISHOVITE ; RAMAN
语种	英语
WOS记录号	WOS:000375940600008
内容类型	期刊论文
版本	同行评议接收稿
源URL	[http://ir.idsse.ac.cn/handle/183446/1540]
专题	深海科学研究部_深海极端环境模拟研究实验室
作者单位	1.US Geol Survey, Reston, VA 20192 USA 2.Sanya Inst Deep Sea Sci & Engn, Sanya, Peoples R China
推荐引用方式 GB/T 7714	Belkin, Harvey E.,Chou, I-Ming,Horton, J. Wright, Jr.,et al. Coesite in suevites from the Chesapeake Bay impact structure[J]. METEORITICS & PLANETARY SCIENCE,2016,51(5):946-965.
APA	Belkin, Harvey E.,Chou, I-Ming,Horton, J. Wright, Jr.,&Jackson, John C..(2016).Coesite in suevites from the Chesapeake Bay impact structure.METEORITICS & PLANETARY SCIENCE,51(5),946-965.
MLA	Belkin, Harvey E.,et al."Coesite in suevites from the Chesapeake Bay impact structure".METEORITICS & PLANETARY SCIENCE 51.5(2016):946-965.