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Comparison of the bottom nepheloid layer and late Holocene deposition on Nitinat Fan: Implications for lutite dispersal and deposition

1977; Geological Society of America; Volume: 88; Issue: 11 Linguagem: Inglês

10.1130/0016-7606(1977)88 2.0.co;2

1943-2674

Per R. Stokke, Bobb Carson, Edward T. Baker,

Fish biology, ecology, and behavior

Research Article| November 01, 1977 Comparison of the bottom nepheloid layer and late Holocene deposition on Nitinat Fan: Implications for lutite dispersal and deposition PER R. STOKKE; PER R. STOKKE 1Department of Geological Sciences, Center for Marine and Environmental Studies, Lehigh University, Bethlehem, Pennsylvania 18015 Search for other works by this author on: GSW Google Scholar BOBB CARSON; BOBB CARSON 1Department of Geological Sciences, Center for Marine and Environmental Studies, Lehigh University, Bethlehem, Pennsylvania 18015 Search for other works by this author on: GSW Google Scholar EDWARD T. BAKER EDWARD T. BAKER 2Department of Oceanography, University of Washington, Seattle, Washington 98195 Search for other works by this author on: GSW Google Scholar GSA Bulletin (1977) 88 (11): 1586–1592. https://doi.org/10.1130/0016-7606(1977)88 2.0.CO;2 Article history first online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share MailTo Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation PER R. STOKKE, BOBB CARSON, EDWARD T. BAKER; Comparison of the bottom nepheloid layer and late Holocene deposition on Nitinat Fan: Implications for lutite dispersal and deposition. GSA Bulletin 1977;; 88 (11): 1586–1592. doi: https://doi.org/10.1130/0016-7606(1977)88 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 study of 56 sediment cores and 121 nephelometer profiles from Nitinat deep-sea fan shows variations in late Holocene accumulation rates and sediment texture which parallel variations in thickness and suspended sediment load of the bottom nepheloid layer. Furthermore, accumulation rates, sediment texture, and nepheloid layer variables all show a substantial degree of correlation with fan topography. In general, the nepheloid layer thickens (>100 m) and suspended sediment loads increase (>100 µg/cm2) above Cascadia Channel (the major channel crossing the fan) as well as above the northern flank of the fan. Over levees and the western portion of the fan, the nepheloid layer thins to 8 ϕ) sediments from interchannel areas with low accumulation rates and a thin, lightly loaded nepheloid layer. The data suggest that turbid water moves continuously down Cascadia Channel and the northern flank. The transport mechanism is size-selective and topographically controlled, concentrating silt-sized detritus in topographic lows. The data also suggest a positive downward flux of sediment particles within the nepheloid layer, at least when averaged over a significant period of time. 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.