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Small-scale mantle convection produces stratigraphic sequences in sedimentary basins
Petersen, K.D.; Nielsen, S.B.; Clausen, O.R.; Stephenson, R.; Gerya, T.V. (2010). Small-scale mantle convection produces stratigraphic sequences in sedimentary basins. Science (Wash.) 329(5993): 827-830. https://hdl.handle.net/10.1126/science.1190115
In: Science (Washington). American Association for the Advancement of Science: New York, N.Y. ISSN 0036-8075, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Petersen, K.D.
  • Nielsen, S.B.
  • Clausen, O.R.
  • Stephenson, R.
  • Gerya, T.V.

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.

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