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

0448588 - GFÚ 2016 RIV NL eng J - Journal Article
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. E-ISSN 1872-616X
R&D Projects: GA ČR GAP210/10/1991
Institutional support: RVO:67985530
Keywords : sea-level change * Cretaceous * chemostratigraphy
Subject RIV: DB - Geology ; Mineralogy
Impact factor: 2.525, year: 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.
Permanent Link: http://hdl.handle.net/11104/0250240