The fate of moderately volatile elements in impact events – lithium connection between the Ries sediments and central European tektites
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F16%3A00000087" target="_blank" >RIV/00025798:_____/16:00000087 - isvavai.cz</a>
Alternative codes found
RIV/67985831:_____/16:00466967 RIV/00216208:11310/16:10330514 RIV/00025798:_____/16:00000381
Result on the web
<a href="http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1945-5100" target="_blank" >http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1945-5100</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/maps.12733" target="_blank" >10.1111/maps.12733</a>
Alternative languages
Result language
angličtina
Original language name
The fate of moderately volatile elements in impact events – lithium connection between the Ries sediments and central European tektites
Original language description
Lithium abundances and isotope compositions are presented for a suite of sediments from the surroundings of the Ries Impact structure, paralleled by new Li data for central European tektites (moldavites) from several substrewn fields (South Bohemia, Moravia, Cheb Basin, Lusatia), including a specimen from the newly discovered substrewn field in Poland. The data set was supplemented by three clay fractions isolated from sedimentary samples. Moldavites measured in this study show a very narrow range in d7Li values (0.6 to 0.3& relative to L-SVEC) and Li contents (23.9–48.1 ppm). This contrasts with sediments from the Ries area which show remarkable range in Li isotope compositions (from 6.9 to 13.4&) and Li contents (0.6–256 ppm). The OSM sediments which, based on chemical similarity, formed the major part of moldavites show range in d7Li values from 2.0 to 7.9& and Li contents from 5.8 to 78.9 ppm. Therefore, the formation of moldavites was apparently accompanied by large-scale mixing, paralleled by chemical and isotope homogenization of their parent matter. The proposed Li mixing model indicates that sands, clayey sediments, and low volumes of carbonates are the major components for tektite formation whereas residual paleokarst sediments could have been a minor but important component for a subset of moldavites. Striking homogenization of Li in tektites, combined with limited Li loss during impacts, may suggest that moderately volatile elements are not scavenged and isotopically fractionated during large-scale collisions, which is consistent with recent models. In general, whether homogenization of bodies with distinct Li isotope systematics takes place, or collision of bodies with similar Li systematics operates cannot be resolved at present stage but Li isotope homogeneity of solar system planets and asteroidal bodies tentatively implies the latter.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DD - Geochemistry
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA13-22351S" target="_blank" >GA13-22351S: Combined use of novel and traditional stable isotope systems in identifying source components and processes of moldavite formation</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Meteoritics and Planetary Science
ISSN
1086-9379
e-ISSN
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Volume of the periodical
51
Issue of the periodical within the volume
12
Country of publishing house
US - UNITED STATES
Number of pages
13
Pages from-to
2403-2415
UT code for WoS article
000393138200009
EID of the result in the Scopus database
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