Record of sea-level fall in shallow-water hemipelagic strata: case study and numerical modelling

0340664 - GFÚ 2011 RIV GB eng J - Článek v odborném periodiku
Laurin, Jiří - Vodrážka, R.
Record of sea-level fall in shallow-water hemipelagic strata: case study and numerical modelling.
Terra Nova. Roč. 22, č. 2 (2010), s. 103-109. ISSN 0954-4879. E-ISSN 1365-3121
Grant CEP: GA AV ČR IAA300120706
Výzkumný záměr: CEZ:AV0Z30120515
Klíčová slova: Bohemian Cretaceous Basin * hemipelagic sequence stratigraphy * modelling
Kód oboru RIV: DB - Geologie a mineralogie
Impakt faktor: 2.164, rok: 2010

Hemipelagic rhythmites of the Bohemian Cretaceous Basin and two-dimensional numerical modelling of coexisting hemipelagic and siliciclastic depositional systems reveal important details on hemipelagic sequence stratigraphy. Lowstand systems tracts of c. 400 ka sequences are marked by distinct (up to 100 ka) phase lags between maxima in bottom shear stress (omission surfaces) and maxima in siliciclastic deposition (mudstone intercalations) in the shallowest zone of this hemipelagic setting. Importantly, sediment redistribution caused by local differences in bathymetry induces up to 100 ka shifts in lithological markers, thus changing the hemipelagic expression of sea-level falls.
Trvalý link: http://hdl.handle.net/11104/0183865