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Coesite in suevites from the Chesapeake Bay impact structure
Jackson, John C.1; Horton, J. Wright, Jr.1; Chou, I-Ming2; Belkin, Harvey E.1
2016-05-01
Source PublicationMETEORITICS & PLANETARY SCIENCE
Volume51Issue:5Pages:946-965
AbstractThe 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.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1111/maps.12638
URL查看原文
Indexed BySCI
Language英语
WOS KeywordSHOCK METAMORPHISM ; VREDEFORT DOME ; SOUTH-AFRICA ; CRYSTALLINE ROCKS ; SILICA POLYMORPH ; VITREOUS SILICA ; METEOR CRATER ; QUARTZ ; STISHOVITE ; RAMAN
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000375940600008
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version同行评议接收稿
Identifierhttp://ir.idsse.ac.cn/handle/183446/1540
Collection深海科学研究部_深海极端环境模拟研究实验室
Affiliation1.US Geol Survey, Reston, VA 20192 USA
2.Sanya Inst Deep Sea Sci & Engn, Sanya, Peoples R China
Recommended Citation
GB/T 7714
Jackson, John C.,Horton, J. Wright, Jr.,Chou, I-Ming,et al. Coesite in suevites from the Chesapeake Bay impact structure[J]. METEORITICS & PLANETARY SCIENCE,2016,51(5):946-965.
APA Jackson, John C.,Horton, J. Wright, Jr.,Chou, I-Ming,&Belkin, Harvey E..(2016).Coesite in suevites from the Chesapeake Bay impact structure.METEORITICS & PLANETARY SCIENCE,51(5),946-965.
MLA Jackson, John C.,et al."Coesite in suevites from the Chesapeake Bay impact structure".METEORITICS & PLANETARY SCIENCE 51.5(2016):946-965.
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