Kang, W, Li, S, Gawthorpe, RL et al. (10 more authors) (2023) Grain-Size Analysis of the Late Pleistocene Sediments in the Corinth Rift: Insights into Strait Influenced Hydrodynamics and Provenance of an Active Rift Basin. Geological Society Special Publications, 523 (1). ISSN 0305-8719
Abstract
Grain-size analysis of the sediments in borehole M0079A, which is located in the Corinth Rift, was used to explore hydrodynamic conditions and provenance in the Late Pleistcene Corinth Rift. Grain-size populations that were sensitive to the sedimentary environments were characterized by frequency distribution, particle size-standard deviation, and probability cumulative curves. Our results indicate the grain-size population component in the range 0.15-0.25 μm may be used as a sensitive proxy for hyperpycnal flows, which have commonly been triggered by river floods from the southern margin of the rift since ca. 0.593–0.613 Ma. The high-density plumes derived from the longer rivers of the southern rift that were prevalent before ca. 0.593–0.613 Ma. When sediment is supplied as hemipelagic deposition, the proportion of the total grain-size population that is in the 0.3–0.5 μm range becomes an index for suspension fall-out deposits. The core shows coarser sediments during the marine periods and this may be linked to the current circulation related to the Ishtmia Strait opening. The study thus illustrates how the establishment of interbasinal straits can influence the details of sedimentary hydrodynamics in the deep-water axis of an adjacent depocenter.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2022 The Author(s). Published by The Geological Society of London. All rights reserved. This is an author produced version of an article, published in Geological Society Special Publications. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Keywords:sensitivity population; strait opening/closure;event deposits; hemipelagic; hyperpycnal flows; sedimentary environments |
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) > Institute for Applied Geosciences (IAG) (Leeds) |
Funding Information: | Funder Grant number NERC (Natural Environment Research Council) NE/S002367/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 15 Nov 2022 17:12 |
Last Modified: | 28 Oct 2023 00:13 |
Status: | Published |
Publisher: | The Geological Society |
Identification Number: | 10.1144/sp523-2022-166 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:193243 |