Patacci, M, Haughton, PDW and McCaffrey, WD (2014) Rheological complexity in sediment gravity flows forced to decelerate against a confining slope, Braux, SE France. Journal of Sedimentary Research, 84 (4). 270 - 277. ISSN 1527-1404
Abstract
Hybrid event beds are now recognized as an important component of many deep-sea fan and sheet systems. They are interpreted to record the passage of rheologically complex sediment gravity currents (hybrid flows) that comprise turbulent, transitional, and/or laminar zones. Hitherto, the development of hybrid flow character has mainly been recognized in system fringes and attributed to distal and lateral flow transformations and/or declining turbulence energy expressed over lateral scales of several kilometers or more. However, new field data show that deposition from hybrid flows can occur relatively proximally, where flows meet confining topography. Turbidity currents primed to transform to hybrid flows by up-dip erosion and incorporation of clay may be forced to do so by rapid, slope-induced decelerations within 1 km of the slope. Local flow transformation and deposition of hybrid event-beds offer an alternative explanation for unusual facies developed at the foot of flow-confining seafloor slopes.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2014, SEPM (Society for Sedimentary Geology). This is an author produced version of a paper published in Journal of Sedimentary Research. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 26 Sep 2014 11:17 |
Last Modified: | 01 May 2015 03:18 |
Published Version: | http://dx.doi.org/10.2110/jsr.2014.26 |
Status: | Published |
Publisher: | Society for Sedimentary Geology |
Refereed: | Yes |
Identification Number: | 10.2110/jsr.2014.26 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:80279 |