Circular, Cryogenic Structures from the Hirnantian Deglaciation Sequence (Anti-Atlas, Morocco)
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F13%3A00389304" target="_blank" >RIV/67985831:_____/13:00389304 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.2110/JSR.2013.11" target="_blank" >http://dx.doi.org/10.2110/JSR.2013.11</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.2110/JSR.2013.11" target="_blank" >10.2110/JSR.2013.11</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Circular, Cryogenic Structures from the Hirnantian Deglaciation Sequence (Anti-Atlas, Morocco)
Popis výsledku v původním jazyce
More than a hundred circular structures are observed at the topmost part of the Late Ordovician glaciogenic record in the central Anti-Atlas, southern Morocco. The structures were formed in the outer glacial platform and characterize the Hirnantian deglaciation sequence. The circular to ovoidal structures, which comprise fluvial sandstone beds and are sealed by shallow-marine strata, occur in closely spaced clusters. The circular structures are interpreted as periglacial in origin, related to cryogenicprocesses involving the growth and then decay of bodies of segregation ice. The size and diameter are comparable to the latest Pleistocene and current lithalsa-like structures. A conceptual emplacement model is proposed. The Hirnantian lithalsa-like structures constitute firm evidence for a Late Ordovician discontinuous permafrost during the deglaciation stage in the area of present Morroccan Anti-Atlas.
Název v anglickém jazyce
Circular, Cryogenic Structures from the Hirnantian Deglaciation Sequence (Anti-Atlas, Morocco)
Popis výsledku anglicky
More than a hundred circular structures are observed at the topmost part of the Late Ordovician glaciogenic record in the central Anti-Atlas, southern Morocco. The structures were formed in the outer glacial platform and characterize the Hirnantian deglaciation sequence. The circular to ovoidal structures, which comprise fluvial sandstone beds and are sealed by shallow-marine strata, occur in closely spaced clusters. The circular structures are interpreted as periglacial in origin, related to cryogenicprocesses involving the growth and then decay of bodies of segregation ice. The size and diameter are comparable to the latest Pleistocene and current lithalsa-like structures. A conceptual emplacement model is proposed. The Hirnantian lithalsa-like structures constitute firm evidence for a Late Ordovician discontinuous permafrost during the deglaciation stage in the area of present Morroccan Anti-Atlas.
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
DB - Geologie a mineralogie
OECD FORD obor
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Návaznosti výsledku
Projekt
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Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2013
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of Sedimentary Research
ISSN
1527-1404
e-ISSN
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Svazek periodika
83
Číslo periodika v rámci svazku
1
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
17
Strana od-do
115-131
Kód UT WoS článku
000317703200008
EID výsledku v databázi Scopus
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