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Circular, Cryogenic Structures from the Hirnantian Deglaciation Sequence (Anti-Atlas, Morocco)

The result's identifiers

  • Result code in 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>

  • Result on the web

    <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>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Circular, Cryogenic Structures from the Hirnantian Deglaciation Sequence (Anti-Atlas, Morocco)

  • Original language description

    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.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    DB - Geology and mineralogy

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2013

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Journal of Sedimentary Research

  • ISSN

    1527-1404

  • e-ISSN

  • Volume of the periodical

    83

  • Issue of the periodical within the volume

    1

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    17

  • Pages from-to

    115-131

  • UT code for WoS article

    000317703200008

  • EID of the result in the Scopus database