Document Type
Article
Date of Original Version
2008
Department
Oceanography
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.
Citation/Publisher Attribution
Backman, J., et al. (2008), Age model and core‐seismic integration for the Cenozoic Arctic Coring Expedition sediments from the Lomonosov Ridge, Paleoceanography, 23, PA1S03, doi: 10.1029/2007PA001476.
Available at: https://doi.org/10.1029/2007PA001476
Comment
Matthew O'Regan is a professor with both the Graduate School of Oceanography and the Department of Ocean Engineering.
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