Supercritical and subcritical turbidity currents and their deposits - a synthesis
Supercritical and subcritical turbidity currents and their deposits - a synthesis
Common facies models of turbidite deposits are based on idealized sequences of turbidite units, which are assumed to reflect the depositional processes of a decelerating turbidity current. We show how suites of turbidite units, i.e., distinct turbidite facies associations that are easily described from core and outcrop, may characterize the entire range of large-scale dynamics of turbidity currents, enabling estimates of their densimetric Froude number (Fr; subcritical versus supercritical) and suspension fall-out rate (stratified versus nonstratified flows). The linking of facies associations with large-scale flow dynamics resolves process-facies links that were hitherto unresolved by the common turbidite facies models.
987-990
Postma, G.
da7c3dd9-12cd-4225-86b2-a5863dc2ff67
Cartigny, M.J.B.
d252d7b1-16c6-47b1-bf86-8087070934ce
November 2014
Postma, G.
da7c3dd9-12cd-4225-86b2-a5863dc2ff67
Cartigny, M.J.B.
d252d7b1-16c6-47b1-bf86-8087070934ce
Postma, G. and Cartigny, M.J.B.
(2014)
Supercritical and subcritical turbidity currents and their deposits - a synthesis.
Geology, 42 (11), .
(doi:10.1130/G35957.1).
Abstract
Common facies models of turbidite deposits are based on idealized sequences of turbidite units, which are assumed to reflect the depositional processes of a decelerating turbidity current. We show how suites of turbidite units, i.e., distinct turbidite facies associations that are easily described from core and outcrop, may characterize the entire range of large-scale dynamics of turbidity currents, enabling estimates of their densimetric Froude number (Fr; subcritical versus supercritical) and suspension fall-out rate (stratified versus nonstratified flows). The linking of facies associations with large-scale flow dynamics resolves process-facies links that were hitherto unresolved by the common turbidite facies models.
This record has no associated files available for download.
More information
Published date: November 2014
Organisations:
Marine Geoscience
Identifiers
Local EPrints ID: 371670
URI: http://eprints.soton.ac.uk/id/eprint/371670
ISSN: 0091-7613
PURE UUID: a45e09b6-79fd-4e5f-bfc6-f4668c703120
Catalogue record
Date deposited: 11 Nov 2014 16:19
Last modified: 14 Mar 2024 18:24
Export record
Altmetrics
Contributors
Author:
G. Postma
Author:
M.J.B. Cartigny
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics