Active growth of the Bengal Fan during sea-level rise and highstand

Abstract

Research Article| April 01, 1997 Active growth of the Bengal Fan during sea-level rise and highstand Michael E. Weber; Michael E. Weber 1BGR Federal Institute for Geosciences and Natural Resources, Stilleweg 2, D-30655 Hannover, Germany Search for other works by this author on: GSW Google Scholar Michael H. Wiedicke; Michael H. Wiedicke 1BGR Federal Institute for Geosciences and Natural Resources, Stilleweg 2, D-30655 Hannover, Germany Search for other works by this author on: GSW Google Scholar Hermann R. Kudrass; Hermann R. Kudrass 1BGR Federal Institute for Geosciences and Natural Resources, Stilleweg 2, D-30655 Hannover, Germany Search for other works by this author on: GSW Google Scholar Christian Hübscher; Christian Hübscher 2Department of Geosciences, University of Bremen, Klagenfurther Strasse, D-28359 Bremen, Germany Search for other works by this author on: GSW Google Scholar Helmut Erlenkeuser Helmut Erlenkeuser 3Leibniz-Laboratory for Radiometric Dating and Isotope Research, Leibnizstrasse 19, D-24118 Kiel, Germany Search for other works by this author on: GSW Google Scholar Author and Article Information Michael E. Weber 1BGR Federal Institute for Geosciences and Natural Resources, Stilleweg 2, D-30655 Hannover, Germany Michael H. Wiedicke 1BGR Federal Institute for Geosciences and Natural Resources, Stilleweg 2, D-30655 Hannover, Germany Hermann R. Kudrass 1BGR Federal Institute for Geosciences and Natural Resources, Stilleweg 2, D-30655 Hannover, Germany Christian Hübscher 2Department of Geosciences, University of Bremen, Klagenfurther Strasse, D-28359 Bremen, Germany Helmut Erlenkeuser 3Leibniz-Laboratory for Radiometric Dating and Isotope Research, Leibnizstrasse 19, D-24118 Kiel, Germany Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1997) 25 (4): 315–318. https://doi.org/10.1130/0091-7613(1997)025<0315:AGOTBF>2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Michael E. Weber, Michael H. Wiedicke, Hermann R. Kudrass, Christian Hübscher, Helmut Erlenkeuser; Active growth of the Bengal Fan during sea-level rise and highstand. Geology 1997;; 25 (4): 315–318. doi: https://doi.org/10.1130/0091-7613(1997)025<0315:AGOTBF>2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract New stratigraphic and high-resolution seismic data from the Bengal Fan indicate that the world's largest fan shows active growth during the most recent sea-level rise and the recent highstand. This unique phenomenon contradicts common sequence-stratigraphic models, and the sediment preserved provides new insight into the sedimentological response of a fan system to sea-level rise, climatic terminations, and monsoon intensity during the past climatic cycle. We present a detailed dated sequence of turbidite sedimentation based on a core transect perpendicular to the active channel-levee system in the upper mid-fan area. Between the two major terminations 1a (12 800 14C yr B.P.) and 1b (9700 14C yr B.P.), and especially at the end of the Younger Dryas, a 13-km-wide channel built up levees 50 m high. With decreasing sediment supply, continued sea-level rise, and increasing monsoon intensity during the early Holocene, turbidity currents were confined to the channel and gradually filled it. The canyon "Swatch of No Ground," a shelf depocenter that serves as the source for frequent turbidity currents, and the channel-levee system provide the unique opportunity for studying an active highstand system. Many fans showed this behavior only during lowered sea-level. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.