Growth of the Bengal Deep-Sea Fan and Denudation in the Himalayas

Abstract

Research Article| March 01, 1971 Growth of the Bengal Deep-Sea Fan and Denudation in the Himalayas JOSEPH R CURRAY; JOSEPH R CURRAY Scripps Institution of Oceanography, La Jolla, California 92037 Search for other works by this author on: GSW Google Scholar DAVID G MOORE DAVID G MOORE Naval Undersea Research and Development Center, San Diego, California 92132 Search for other works by this author on: GSW Google Scholar Author and Article Information JOSEPH R CURRAY Scripps Institution of Oceanography, La Jolla, California 92037 DAVID G MOORE Naval Undersea Research and Development Center, San Diego, California 92132 Publisher: Geological Society of America Received: 01 Oct 1970 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1971, The Geological Society of America, Inc. Copyright is not claimed on any material prepared by U.S. government employees within the scope of their employment. GSA Bulletin (1971) 82 (3): 563–572. https://doi.org/10.1130/0016-7606(1971)82[563:GOTBDF]2.0.CO;2 Article history Received: 01 Oct 1970 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation JOSEPH R CURRAY, DAVID G MOORE; Growth of the Bengal Deep-Sea Fan and Denudation in the Himalayas. GSA Bulletin 1971;; 82 (3): 563–572. doi: https://doi.org/10.1130/0016-7606(1971)82[563:GOTBDF]2.0.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 SocietyGSA Bulletin Search Advanced Search Abstract A geological and geophysical survey in 1968 has shown that the Bengal Deep-Sea Fan is almost 3000 km long, and 1000 km wide. We estimate that it may exceed 12 km in thickness. The sediments of the fan have been transported by turbidity currents from the Ganges-Brahmaputra River delta, through the "Swatch of No Ground" submarine canyon and into an extensive, complex, meandering, and braided net of fan valleys. Present rate of sediment influx suggests a regional rate of denudation in the Himalayan source area of over 70 cm/103 years. The sediment section in reflection profiles of the fan has been subdivided into three units separated by prominent unconformities. Volumes of the upper two units compared with the sediment influx rate extrapolated into the past suggest that the unconformities may be late Miocene and earliest Pleistocene. These times correspond to periods of orogeny in the Himalayas and suggest contemporaneity between plate-edge orogeny and mid-plate tectonic activity. 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.