Počet záznamů: 1  

Geochemical and palynological sea-level proxies in hemipelagic sediments: A critical assessment from the Upper Cretaceous of the Czech Republic

  1. 1. 0448588 - GFU-E 2016 RIV NL eng J - Článek v odborném periodiku
    Olde, K. - Jarvis, I. - Uličný, David - Pearce, M. A. - Trabucho-Alexandre, J. - Čech, S. - Gröcke, D. R. - Laurin, Jiří - Švábenická, L. - Tocher, B. A.
    Geochemical and palynological sea-level proxies in hemipelagic sediments: A critical assessment from the Upper Cretaceous of the Czech Republic.
    Palaeogeography, Palaeoclimatology, Palaeoecology. Roč. 435, October (2015), s. 222-243 ISSN 0031-0182
    Grant CEP: GA ČR GAP210/10/1991
    Institucionální podpora: RVO:67985530
    Klíčová slova: sea-level change * Cretaceous * chemostratigraphy
    Kód oboru RIV: DB - Geologie a mineralogie
    Impakt faktor: 2.525, rok: 2015

    Geochemical and palynological records are presented for an expanded Turonian-Coniacian hemipelagic succession in the central Bohemian Cretaceous Basin. A high-resolution stratigraphic framework is provided by biostratigraphy and organic carbon stable-isotope (delta C-13(org)) chemostratigraphy. A short-term (100 kyr) sea-level curve has been derived from high-resolution transgressive/regressive maxima / shore-proximity data established from basin-wide sediment geometries. The viability of geochemical and palynological parameters as potential sea-level proxies is tested against this independently derived sea-level record. Elemental chemostratigraphy is demonstrated to offer a reliable means of identifying medium- to long-term (0.4-2.4 Myr) sea-level trends. Manganese maxima are associated with periods of high sea level, and troughs with intervals of low sea level. Falling Mn contents accompany regression and rising values transgression.
    Trvalý link: http://hdl.handle.net/11104/0250240