Stable organic carbon isotope record and total organic carbon content from the Cenomanian-Turonian boundary

Ocean Drilling Program (ODP) Leg 207 recovered expanded sections of organic-carbon-rich laminated shales on Demerara Rise (western tropical Atlantic). High-resolution organic carbon isotope and total organic carbon (TOC) records are presented, which span the Cenomanian-Turonian boundary interval (CTBI), including the Oceanic Anoxic Event (OAE) 2, from four sites oriented along a NW striking depth transect. These records represent the first high-resolution carbon isotope records across OAE 2 from the South American margin of the tropical Atlantic. Due to the scarcity of age significant fossils, the main purpose of this study was to develop a detailed carbon isotope stratigraphy in order to correlate the CTBI across the depth transect and to tie this to biostratigraphically well-defined sections in the Western Interior Basin (Pueblo, USA), boreal shelf seas (Eastbourne, England), and western Tethys (Oued Mellegue, Tunisia). All four sections studied document a 6 per mil increase of d13Corg values at the base of the CTBI, which is followed by an interval of elevated d13Corg values and a subsequent decrease. Our results supply an important stratigraphic base for subsequent paleoceanographic studies on Late Cenomanian to Early Turonian sediments from Demerara Rise and elsewhere.

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Cite this as

Erbacher, Jochen, Friedrich, Oliver, Wilson, Paul A, Birch, Heather, Mutterlose, Jörg (2005). Dataset: Stable organic carbon isotope record and total organic carbon content from the Cenomanian-Turonian boundary. https://doi.org/10.1594/PANGAEA.768350

DOI retrieved: 2005

Additional Info

Field Value
Imported on November 29, 2024
Last update November 29, 2024
License CC-BY-3.0
Source https://doi.org/10.1594/PANGAEA.768350
Author Erbacher, Jochen
Given Name Jochen
Family Name Erbacher
More Authors
Friedrich, Oliver
Wilson, Paul A
Birch, Heather
Mutterlose, Jörg
Source Creation 2005
Publication Year 2005
Resource Type application/zip - filename: Erbacher_2005
Subject Areas
Name: Chemistry

Name: Geophysics

Name: Lithosphere

Related Identifiers
Title: Stable organic carbon isotope stratigraphy across Oceanic Anoxic Event 2 of Demerara Rise, western tropical Atlantic
Identifier: https://doi.org/10.1029/2004GC000850
Type: DOI
Relation: IsSupplementTo
Year: 2005
Source: Geochemistry, Geophysics, Geosystems
Authors: Erbacher Jochen , Friedrich Oliver , Wilson Paul A , Birch Heather , Mutterlose Jörg .