Geochemical indicators of a biogenic component in source materials of moldavites
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F22%3A00563661" target="_blank" >RIV/67985891:_____/22:00563661 - isvavai.cz</a>
Alternative codes found
RIV/61389005:_____/22:00563499
Result on the web
<a href="http://dx.doi.org/10.1130/2021.2553(26)" target="_blank" >http://dx.doi.org/10.1130/2021.2553(26)</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1130/2021.2553(26)" target="_blank" >10.1130/2021.2553(26)</a>
Alternative languages
Result language
angličtina
Original language name
Geochemical indicators of a biogenic component in source materials of moldavites
Original language description
Formation of the Central European tektites, known as moldavites, has been associated with a large meteorite impact in southern Germany 14.8 m.y. ago. The geochemical link between moldavites and their source materials, and the processes of their possible chemical differentiation still remain uncertain. Some differences in chemical composition between moldavites and sediments of corresponding age from the surroundings of the Ries crater could be explained by a hypothesis according to which biomass covering the pre-impact area contributed to the source materials. In a comparison of the geochemical compositions of a large representative set of moldavites and suitable Ries sediments, enrichment in elements K, Ca, Mg, and Mn and depletion of Na in moldavites, similar to redistribution of these elements during their transfer from soil to plants, could indicate the unconventional biogenic component in moldavite source materials. Simple mixing calculations of the most suitable Ries sediments and a model biogenic component represented by burned biomass residue are presented. The plausibility of the estimated biomass contribution considering reconstructions of the middle Miocene paleoenvironment in the pre-impact Ries area is discussed. No significant vapor fractionation is required to explain the observed variability of moldavite chemical composition.
Czech name
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Czech description
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Classification
Type
C - Chapter in a specialist book
CEP classification
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OECD FORD branch
10505 - Geology
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Book/collection name
In the Footsteps of Warren B. Hamilton: New Ideas in Earth Science
ISBN
978-08-1372-553-6
Number of pages of the result
12
Pages from-to
335-346
Number of pages of the book
434
Publisher name
The Geological Society of America
Place of publication
Boulder
UT code for WoS chapter
000891146500027