Publications and Research

Authors

Lisa C. McNeill, University of Southampton
Donna J. Shillington, Columbia University
Gareth D. O. Carter, The Lyell Survey
Jeremy D. Everest, The Lyell Survey
Robert L. Gawthorpe, Bergen University
Clint Miller, Rice University
Marcie P. Phillips, University of Texas at Austin
Richard E. Ll. Collier, University of Leeds
Aleksandra Cvetkoska, Justus Liebig University, Giessen
Gino De Gelder, Universite Paris Diderot
Paula Diz, Universidad de Vigo
Mai-Linh Doan, Université Grenoble Alpes
Mary Ford, Université de Lorraine
Maria Geraga, University of Patras
Jack Gillespie, University of Adelaide
Romain Hemelsdael, University of Montpellier
Emilio Herrero-Bervera, University of Hawaii, Manoa
Mohammad Ismaiel, University of Hyderabad
Liliane Janikian, Universidade Federal de São Paulo
Katerina Kouli, University of Athens
Erwan Le Ber, University of Leicester
Shunli Li, China University of Geosciences Wuhan
Marco Maffione, University of Birmingham
Carol Mahoney, University of Leeds
Malka L. Machlus, CUNY Kingsborough Community CollegeFollow
Georgios Michas, Technological Educational Institute of Crete
Casey W. Nixon, University of Bergen
Sabire Asli Oflaz, Christian-Albrechts-Universität zu Kiel
Abah P. Omale, Louisiana State University
Kostas Panagiotopoulos, University of Cologne
Sofia Pechlivanidou, University of Bergen
Simone Sauer, Centre Bretagne
Joana Seguin, Christian-Albrechts-Universitat zu Kiel
Spyros Sergiou, University of Patras
Natalia V. Zakharova, Central Michigan University
Sophie Green, The Lyell Centre

Document Type

Article

Publication Date

2-28-2019

Abstract

Young rifts are shaped by combined tectonic and surface processes and climate, yet few records exist to evaluate the interplay of these processes over an extended period of early rift-basin development. Here, we present the longest and highest resolution record of sediment flux and paleoenvinronmental changes when a young rift connects to the global concerns. New results from International Ocean Discovery Program (IODP) Expedition 381 in the Corinth Rift shows 10s-100s of kyr cyclic variations in basin paleoenvironment as eustatic sea level fluctuated with respect to sills bounding this semi-isolated basin, and reveal substantial corresponding changes in the volume and character of sediment delivered into the rift. During interglacials, when the basin was marine, sedimintation rates were lower (excepting the Holocene), and bioturbation and organic carbon concentration higher. During glacials, the basin was isolated from the ocean, and sedimentation rates were higher (~2-7 times those in interglacials). We infer that reduced vegetation cover during glacials drove higher sediment flux from the rift flanks. These orbital-timescale changes in rate and type of basin infill will likely influence early rift sedimentary and faulting processes, potentially including syn-rift stratigraphy, sediment burial rates, and organic carbon flux and preservation on deep continental margins worldwide.

Comments

This article was originally published in Scientific Reports, available at DOI: 10.1038/s41598-019-40022-w.

This article is licensed under a Creative Commons Attribution 4.0 International License.

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