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http://hdl.handle.net/20.500.12128/15144
Tytuł: | Moldavite finds in Middle Miocene (Langhian Stage) deposits of southwestern Poland |
Autor: | Brachaniec, Tomasz |
Słowa kluczowe: | moldavite; tektite; distal ejectas; Ries crater; Middle Miocene; Poland |
Data wydania: | 2020 |
Źródło: | Carnets de Geologie, Vol. 20 (2020), s. 241-247 |
Abstrakt: | Most of the Ries tektites (moldavites) were deposited in sediments clearly postdating the
Ries crater formation. This suggests secondary deposition for these ejected glasses. Only a few sedimentary
formations known to contain these tektites are of Middle Miocene age and coeval with the Ries
event. One is the Poznańska Formation, which is exposed across southwestern Poland. These mud deposits
formed in the Middle Miocene (Langhian Stage). New moldavites, described in this report were
found in the Poznańska Formation and weigh from 0.851 to 0.907 g. The North Stanisław sandpit,
where the tektite specimens were found, is located 490 km from the Ries structure. These finds agree
with the numerical simulation modelling of the ejection of these moldavites up to 600 km away from
the source crater. |
URI: | http://hdl.handle.net/20.500.12128/15144 |
DOI: | 10.2110/carnets.2020.2012 |
ISSN: | 1634-0744 |
Pojawia się w kolekcji: | Artykuły (WNP)
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