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Controls on the apex location of large deltas.
- Source :
-
Journal of the Geological Society . 2017, Vol. 174 Issue 1, p10-13. 4p. - Publication Year :
- 2017
-
Abstract
- The majority of sediment transport to the world's oceans is routed via large deltas. We examine controls on delta apex location using a database of 84 of the world's largest deltas. Of the dataset, 94% of apices are controlled by either bedrock valleys (80%) or Pleistocene alluvial valleys (14%), suggesting that the principal control on modern apex development is valley exit and/or bedslope-mediated avulsion and not hydrodynamic backwater length. Valley exit control on large delta apex location may have been as important in the rock record as it is today, and should be considered as a key control on delta development. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SEDIMENTS
*DELTAS
*BACKWATER
*HYDRODYNAMICS
*SHIELDS (Geology)
*PLEISTOCENE Epoch
Subjects
Details
- Language :
- English
- ISSN :
- 00167649
- Volume :
- 174
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Journal of the Geological Society
- Publication Type :
- Periodical
- Accession number :
- 120677154
- Full Text :
- https://doi.org/10.1144/jgs2015-154