Concentrations of trace elements and stable carbon and oxygen isotope record of carbonates of ODP Leg 103 holes (Table 1)

DOI

Trace element contents (Sr, Mg, Mn, and Fe) and the composition of oxygen and carbon isotopes show that late burial diagenesis did not play an important role in pelagic carbonate chemistry in the bulk carbonates recovered from Holes 638B, 638C, and 641C (except for anoxic pore-water diagenesis in Valanginian sediments). The evolution of these different geochemical markers documents the importance and global extent of the Barremian ocean chemistry crisis. A reconstruction of paleoceanographic and climatic conditions during the Early Cretaceous is proposed. Sea level rose eustatically from the early Hauterivian to early Albian, but a rapid down and up fluctuation occurred during the Barremian. Soluble supply from the continent decreased during the Valanginian-early Hauterivian while oceanic hydrothermal supply increased. The climate cooled slightly during the Hauterivian, rapidly warmed during the Barremian, and cooled again during the Aptian.

Supplement to: Clauser, Sebastian; Renard, Maurice; Richebois, Gilbert (1988): Variations in trace element contents and isotopic compositions of Lower Cretaceous carbonates from the Galicia margin (ODP Leg 103): reconstruction of the paleochemistry of the Early Cretaceous Ocean. In: Boillot, G; Winterer, EL; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 103, 489-504

Identifier
DOI https://doi.org/10.1594/PANGAEA.743852
Related Identifier https://doi.org/10.2973/odp.proc.sr.103.124.1988
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.743852
Provenance
Creator Clauser, Sebastian; Renard, Maurice; Richebois, Gilbert
Publisher PANGAEA
Publication Year 1988
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Language English
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 526 data points
Discipline Earth System Research
Spatial Coverage (-12.197W, 42.153S, -12.182E, 42.155N); South Atlantic Ocean
Temporal Coverage Begin 1985-05-06T00:15:00Z
Temporal Coverage End 1985-06-15T13:30:00Z