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- Title
Realistic Paleobathymetry of the Cenomanian-Turonian (94 Ma) Boundary Global Ocean.
- Authors
Goswami, Arghya; Hinnov, Linda; Gnanadesikan, Anand; Young, Taylor
- Abstract
At present, global paleoclimate simulations are prepared with bathtub-like, flat, featureless and steep walled ocean bathymetry, which is neither realistic nor suitable. In this article, we present the first enhanced version of a reconstructed paleobathymetry for Cenomanian-Turonian (94 Ma) time in a 0.1° x 0.1° resolution, that is both realistic and suitable for use in paleo-climate studies. This reconstruction is an extrapolation of a parameterized modern ocean bathymetry that combines simple geophysical models (standard plate cooling model for the oceanic lithosphere) based on ocean crustal age, global modern oceanic sediment thicknesses, and generalized shelf-slope-rise structures calibrated from a published global relief model of the modern world (ETOPO1) at active and passive continental margins. The base version of this Cenomanian-Turonian paleobathymetry reconstruction is then updated with known submarine large igneous provinces, plateaus, and seamounts to minimize the difference between the reconstructed paleobathymetry and the real bathymetry that once existed.
- Subjects
PALEOBATHYMETRY; PALEOCLIMATOLOGY; PALEOCEANOGRAPHY
- Publication
Geosciences (2076-3263), 2018, Vol 8, Issue 1, p21
- ISSN
2076-3263
- Publication type
Article
- DOI
10.3390/geosciences8010021