NDLI: Evidence for current-controlled sedimentation along the southern Mozambique continental margin since Early Miocene times

Content Provider	Springer Nature Link
Author	Preu, Benedict Spieß, Volkhard Schwenk, Tilmann Schneider, Ralph
Copyright Year	2011
Abstract	Major plastered drift sequences were imaged using high-resolution multichannel seismics during R/V Meteor cruises M63/1 and M75/3 south of the Mozambique Channel along the continental margin of Mozambique off the Limpopo River. Detailed seismic-stratigraphic analyses enabled the reconstruction of the onset and development of the modern, discontinuous, eddy-dominated Mozambique Current. Major drift sequences can first be identified during the Early Miocene. Consistent with earlier findings, a progressive northward shift of the depocenter indicates that, on a geological timescale, a steady but variable Mozambique Current existed from this time onward. It can furthermore be shown that, during the Early/Middle Miocene, a coast-parallel current was established off the Limpopo River as part of a lee eddy system driven by the Mozambique Current. Modern sedimentation is controlled by the interplay between slope morphology and the lee eddy system, resulting in upwelling of Antarctic Intermediate Water. Drift accumulations at larger depths are related to the reworking of sediment by deep-reaching eddies that migrate southward, forming the Mozambique Current and eventually merging with the Agulhas Current.
Starting Page	427
Ending Page	435
Page Count	9
File Format	PDF
ISSN	02760460
Journal	Geo-Marine Letters
Volume Number	31
Issue Number	5-6
e-ISSN	14321157
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-06-11
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Geology
Content Type	Text
Resource Type	Article
Subject	Environmental Science Geotechnical Engineering and Engineering Geology Oceanography

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