Beginning of the Miocene Climatic Optimum in Central Europe in sediment archive of the Most Basin, Czech Republic
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F21%3A00539973" target="_blank" >RIV/61388980:_____/21:00539973 - isvavai.cz</a>
Alternative codes found
RIV/61989592:15310/21:73610052 RIV/00025798:_____/21:00000157
Result on the web
<a href="http://hdl.handle.net/11104/0317655" target="_blank" >http://hdl.handle.net/11104/0317655</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3140/bull.geosci.1794" target="_blank" >10.3140/bull.geosci.1794</a>
Alternative languages
Result language
angličtina
Original language name
Beginning of the Miocene Climatic Optimum in Central Europe in sediment archive of the Most Basin, Czech Republic
Original language description
The Most Basin (Czech Republic) offers an extraordinarily detailed archive of the continental environment in Central Europe (ca. 50 degrees N) in the period around the beginning of the Miocene Climatic Optimum. The sediments were studied by magneto-, chemo-, and cyclostratigraphy. Novel proxies for chemical weathering intensity were derived from K/Al concentration ratios and Mg/Al concentration ratios corrected for autochthonous carbonate content using an isometric log-ratio methodology and robust regression (RR). The correction confirmed that the association of chemical weathering maxima (lows in K/Al or Mg/Al) with eccentricity, obliquity, or precession maxima were affected by sediment grain size to only a minor degree. The orbital control allowed for the refinement of a magnetic-polarity-based depth-age model to unprecedented resolution. The timing of the basin development after the peat swamp flooding was confirmed, it started in the C5Dr.2r subchron, intensified in the C5Dn.1n subchron over several tens of kyr, and spread over the entire basin in the early part of C5Dr.1r. The expression of orbital cycles in weathering proxies changed abruptly near 17.07 and 16.90 Ma, in close temporal proximity to two step-like changes in global marine delta O-18 records between 17.2 and 16.9 Ma. The sensitivity of weathering intensity in the Most Basin to orbital forcing decreased coevally with the initial floods of the Columbia River Basalt Group and disruptions of the global delta C-13 record near the C5Dr/C5Dn reversal at around 16.6 Ma. Ratios K/Al and Mg/Al, either raw or carbonate corrected, can be recommended for the study of continental basin sediments.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10511 - Environmental sciences (social aspects to be 5.7)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Bulletin of Geosciences
ISSN
1214-1119
e-ISSN
1802-8225
Volume of the periodical
96
Issue of the periodical within the volume
1
Country of publishing house
CZ - CZECH REPUBLIC
Number of pages
21
Pages from-to
61-81
UT code for WoS article
000606671200005
EID of the result in the Scopus database
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