2026-10-15T09:47:52Z https://oai.datacite.org/oai

doi:10.1594/pangaea.761573 2024-06-26T04:28:51Z PANGAEA PANGAEA.REPOSITORY

Physical properties of 4 cores from the Bengal Fan Weber, Michael E Wiedicke-Hombach, Michael Kudrass, Hermann-Rudolph Hübscher, Christian Erlenkeuser, Helmut PANGAEA 2011 Issued: 2011 doi:10.1130/0091-7613(1997)025<0315:agotbf>2.3.co;2 Piston corer (BGR type) SO93/3 Sonne 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. Supplement to: Weber, Michael E; Wiedicke-Hombach, Michael; Kudrass, Hermann-Rudolph; Hübscher, Christian; Erlenkeuser, Helmut (1997): Active Growth of the Bengal Fan during sea-level rise and highstand. Geology, 25(4), 315-318 en Collection Supplementary Publication Series of Datasets application/zip Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode