Small-Scale Mantle Convection Produces Stratigraphic Sequences in Sedimentary Basins

K. D. Petersen, S. B. Nielsen, O. R. Clausen, R. Stephenson, T. Gerya

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

Cyclic sedimentary deposits link stratigraphic sequences that are now geographically distant but were once part of the same depositional environment. Some of these sequences occur at periods of 2 to 20 million years, and eustatic sea-level variations or regional tectonic events are likely causes of their formation. Using numerical modeling, we demonstrate that small-scale mantle convection can also cause the development of stratigraphic sequences through recurrent local and regional vertical surface movements. Small-scale convection-driven stratigraphic sequences occur at periods of 2 to 20 million years and correlate only at distances up to a few hundred kilometers. These results suggest that previous sequence stratigraphic analyses may contain erroneous conclusions regarding eustatic sea-level variations.

Original languageEnglish
Pages (from-to)827-830
Number of pages4
JournalScience
Volume329
Issue number5993
DOIs
Publication statusPublished - 13 Aug 2010

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