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We present GlobSed, a new global 5‐arc‐minute total sediment thickness grid for the world's oceans and marginal seas. GlobSed covers a larger area than previously published global grids and incorporates updates for the NE Atlantic, Arctic, Southern Ocean, and Mediterranean regions, which results in a 29.7% increase in estimated total oceanic sediment volume. We use this new global grid and a revised global oceanic lithospheric age grid to assess the relationship between the total sediment thickness and age of the underlying oceanic lithosphere and its latitude. An analytical approximation model is used to mathematically describe sedimentation trends in major oceanic basins and to allow paleobathymetric reconstructions at any given geological time. This study provides a much‐needed update of the sediment thickness distribution of the world oceans and delivers a model for sedimentation rates on oceanic crust through time that agrees well with selected drill data used for comparison.

Item Type:	Refereed Article
Keywords:	sediment thickness, marine geophysics, lithospheric age
Research Division:	Earth Sciences
Research Group:	Geology
Research Field:	Marine geoscience
Objective Division:	Expanding Knowledge
Objective Group:	Expanding knowledge
Objective Field:	Expanding knowledge in the earth sciences
UTAS Author:	Whittaker, JM (Associate Professor Jo Whittaker)
ID Code:	132861
Year Published:	2019
Funding Support:	Australian Research Council (DE140100376)
Web of Science® Times Cited:	131
Deposited By:	Oceans and Cryosphere
Deposited On:	2019-05-23
Last Modified:	2020-07-16
Downloads:	60 View Download Statistics