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Geochemistry of impactites
Christian Koeberl, Philippe Claeys, Lutz Hecht and Iain McDonald
Geochemistry of impactites
Elements (February 2012) 8 (1): 37-42
Geochemistry of impactites
Elements (February 2012) 8 (1): 37-42
Index Terms/Descriptors
- alkaline earth metals
- Be-10
- beryllium
- breccia
- chromium
- Cr-53/Cr-52
- differentiation
- ejecta
- geochemistry
- He-3
- helium
- hydrothermal alteration
- impact breccia
- impact melts
- impactites
- isotope ratios
- isotopes
- melts
- metals
- metamorphic rocks
- metamorphism
- metasomatism
- noble gases
- Os-188/Os-187
- osmium
- platinum group
- radioactive isotopes
- siderophile elements
- stable isotopes
- tungsten
- W-182
Abstract
Geochemical analysis is an essential tool for the confirmation and study of impact structures and the characterization of the various rock types involved (target rocks, impact breccias, melt rocks, etc.). Concentrations and interelement ratios of the platinum-group elements, as well as the osmium and chromium isotope systems, allow quantification of extraterrestrial components and the identification of impactor types in impact deposits. In addition, chemolithostratigraphy can reveal the possible role of impacts in environmental change throughout the geologic record. This article deals predominantly with terrestrial impact structures.
ISSN: 1811-5209
Serial Title: Elements
Serial Volume: 8
Serial Issue: 1
Title: Geochemistry of impactites
Affiliation: University of Vienna, Department of Lithospheric Research,
Vienna,
Austria
Pages: 37-42
Published: 201202
Text Language: English
Publisher: Mineralogical Society of America and Mineralogical Society of Great Britain and Ireland and Mineralogical Association of Canada and Geochemical Society and Clay Minerals Society,
International
References: 30
Accession Number: 2012-052090
Categories: Geochemistry of rocks, soils, and sedimentsIgneous and metamorphic petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
Secondary Affiliation: Vrije Universiteit Brussel,
BEL,
BelgiumNatural History Museum Berlin,
DEU,
GermanyCardiff University,
GBR,
United Kingdom
Country of Publication: International
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201227
