Total organic carbon content and redox-sensitiv trace metal concentrations of selected late Cenoman claystones from DSDP Hole 93-603B ...

• Main Authors: Kuypers, Marcel MM, Lourens, Lucas Joost, Rijpstra, W Irene C, Pancost, Richard D, Nijenhuis, Ivar A, Sinninghe Damsté, Jaap S
• Format: Dataset
• Language: English
• Published: PANGAEA 2004
• Subjects: DEPTH, sediment/rock; Sample code/label; Rock type; Carbon, organic, total; Manganese/Aluminium ratio; Molybdenum/Aluminium ratio; Nickel/Aluminium ratio; Vanadium/Aluminium ratio; Zinc/Aluminium ratio; Drilling/drill rig; DSDP/ODP/IODP sample designation; X-ray diffraction XRD; Leg93; Glomar Challenger; Deep Sea Drilling Project DSDP; North Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.712950; https://doi.pangaea.de/10.1594/PANGAEA.712950

The Cenomanian/Turonian (C/T) intervals at DSDP Sites 105 and 603B from the northern part of the proto-North Atlantic show high amplitude, short-term cyclic variations in total organic carbon (TOC) content. The more pronounced changes in TOC are also reflected by changes in lithology from green claystones (TOC<1%) to black claystones (TOC>1%). Although their depositional history was different, the individual TOC cycles at Sites 105 and 603B can be correlated using stable carbon isotope stratigraphy. Sedimentation rates obtained from the isotope stratigraphy and spectral analyses indicate that these cycles were predominately precession controlled. The coinciding variations in HI, OI, delta13Corg and the abundance of marine relative to terrestrial biomarkers, as well as the low abundance of lignin pyrolysis products generated from the kerogen of the black claystones, indicate that these cyclic variations reflect changes in the contribution of marine organic matter (OM). The cooccurrence of lamination, ... : Supplement to: Kuypers, Marcel MM; Lourens, Lucas Joost; Rijpstra, W Irene C; Pancost, Richard D; Nijenhuis, Ivar A; Sinninghe Damsté, Jaap S (2004): Orbital forcing of organic carbon burial in the proto-North Atlantic during oceanic anoxic event 2. Earth and Planetary Science Letters, 228(3-4), 465-482 ...