(Table 1) Elemental mean values of the upper Paleocene and lower Eocene in IODP Hole 302-M0004A, supplement to: Frank, Martin; Backman, Jan; Jakobsson, Martin; Moran, Kathryn; O'Regan, Matthew; King, John W; Haley, Brian A; Kubik, Peter W; Garbe-Schönberg, Dieter (2008): Beryllium isotopes in central Arctic Ocean sediments over the past 12.3 million years: Stratigraphic and paleoclimatic implications. Paleoceanography, 23(1), PA1S02

DOI

We reconstruct the latest Paleocene and early Eocene (~57-50 Ma) environmental trends in the Arctic Ocean and focus on the Paleocene-Eocene thermal maximum (PETM) (~55 Ma), using strata recovered from the Lomonosov Ridge by the Integrated Ocean Drilling Program Expedition 302. The Lomonosov Ridge was still partially subaerial during the latest Paleocene and earliest Eocene and gradually subsided during the early Eocene. Organic dinoflagellate cyst (dinocyst) assemblages point to brackish and productive surface waters throughout the latest Paleocene and early Eocene. Dinocyst assemblages are cosmopolitan during this time interval, suggesting warm conditions, which is corroborated by TEX86'-reconstructed temperatures of 15°-18°C. Inorganic geochemistry generally reflects reducing conditions within the sediment and euxinic conditions during the upper lower Eocene. Spectral analysis reveals that the cyclicity, recorded in X-ray fluorescence scanning Fe data from close to Eocene thermal maximum 2 (~53 Ma, presence confirmed by dinocyst stratigraphy), is related to precession. Within the lower part of the PETM, proxy records indicate enhanced weathering, runoff, anoxia, and productivity along with sea level rise. On the basis of total organic carbon content and variations in sediment accumulation rates, excess organic carbon burial in the Arctic Ocean appears to have contributed significantly to the sequestration of injected carbon during the PETM.

DEPTH, sediment/rock [m] is given in mcd.

Identifier
DOI https://doi.org/10.1594/PANGAEA.733796
Related Identifier https://doi.org/10.1029/2007PA001478
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.733796
Provenance
Creator Sluijs, Appy; Röhl, Ursula; Schouten, Stefan; Brumsack, Hans-Jürgen; Sangiorgi, Francesca; Sinninghe Damsté, Jaap S; Brinkhuis, Henk
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2008
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 125 data points
Discipline Earth System Research
Spatial Coverage (136.177 LON, 87.867 LAT); Arctic Ocean