Age model and core-seismic integration for the Cenozoic Arctic Coring Expedition sediments from the Lomonosov Ridge.

Backman, Jan, Jakobsson, Martin, Frank, Martin, Sangiorgi, Francesca, Brinkhuis, Henk, Stickley, Catherine, O'Regan, Matthew, Lovli, Reidir, Pälike, Heiko, Spofforth, David, Gattacecca, Jérome, Moran, Kate, King, John and Heil, Chip (2008) Age model and core-seismic integration for the Cenozoic Arctic Coring Expedition sediments from the Lomonosov Ridge. Open Access Paleoceanography, 23 (PA1S03). DOI 10.1029/2007PA001476.

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Abstract

Cenozoic biostratigraphic, cosmogenic isotope, magnetostratigraphic, and cyclostratigraphic data derived from Integrated Ocean Drilling Program Expedition 302, the Arctic Coring Expedition (ACEX), are merged into a coherent age model. This age model has low resolution because of poor core recovery, limited availability of biostratigraphic information, and the complex nature of the magnetostratigraphic record. One 2.2 Ma long hiatus occurs in the late Miocene; another spans 26 Ma (18.2–44.4 Ma). The average sedimentation rate in the recovered Cenozoic sediments is about 15 m/Ma. Core-seismic correlation links the ACEX sediments to the reflection seismic stratigraphy of line AWI-91090, on which the ACEX sites were drilled. This seismostratigraphy can be correlated over wide geographic areas in the central Arctic Ocean, implying that the ACEX age model can be extended well beyond the drill sites.

Document Type: Article
Keywords: Cenozoic, age model, core-seismic integration, Arctic Ocean
Research affiliation: OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-P-OZ Paleo-Oceanography
Kiel University
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1029/2007PA001476
ISSN: 0883-8305
Projects: ACEX, Arctic Coring Expedition
Date Deposited: 03 Dec 2008 16:50
Last Modified: 10 May 2017 08:10
URI: http://oceanrep.geomar.de/id/eprint/1299

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