Cenomanian - Turonian Oceanic Anoxic Event (OAE2) in the Sakarya Zone, northwestern Turkey: Sedimentological, cyclostratigraphic, and geochemical records


YILMAZ İ. Ö. , ALTINER D. , TEKİN U. K. , Tuysuz O., Ocakoglu F., Acikalin S.

CRETACEOUS RESEARCH, vol.31, no.2, pp.207-226, 2010 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 31 Issue: 2
  • Publication Date: 2010
  • Doi Number: 10.1016/j.cretres.2009.10.005
  • Title of Journal : CRETACEOUS RESEARCH
  • Page Numbers: pp.207-226
  • Keywords: Anoxic and oxic, Black shales and pelagic red beds, Cenomanian/Turonian boundary, Cyclicity, Sea level changes, Turkey, CARBON-RICH SEDIMENTS, RED BEDS, CRETACEOUS CLIMATE, CONTINENTAL-MARGIN, PELAGIC SEDIMENTS, CENTRAL PONTIDES, SOUTH-ATLANTIC, BLACK SHALES, KARGI MASSIF, SEA-LEVEL

Abstract

The Cenomanian/Turonian oceanic anoxic event as recorded in many parts of the world is characterized by presence of black shales and global carbon isotope peaks. Cyclic variations within the anoxic event and association with pelagic red beds are indicated by many studies. Global tectonic/volcanic controls on the origin and the chronostratigraphic position of the anoxic event within the global sea-level changes are important for understanding the paleoceanographic and paleoclimatic conditions during the deposition of Cenomanian/Turonian sediments.