Sedimentary Processes in the Fjord-like Embayments of the Vestfold and Larsemann Hills
Ellis Fjord is a small, fjord-like marine embayment in the vestfold Hills, eastern Antarctica. Modern sediment input is dominated by a biogenic diatom rain, although aeolian, fluvial, ice-rafted, slumped and tidal sediments also make a minor contribution. In areas where bioturbation is significant r...
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Format: | Dataset |
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Australian Ocean Data Network
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Online Access: | https://researchdata.ands.org.au/sedimentary-processes-fjord-larsemann-hills/685997 https://data.aad.gov.au/metadata/records/ASAC_705 https://secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=705 http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=1540 http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_705 |
Summary: | Ellis Fjord is a small, fjord-like marine embayment in the vestfold Hills, eastern Antarctica. Modern sediment input is dominated by a biogenic diatom rain, although aeolian, fluvial, ice-rafted, slumped and tidal sediments also make a minor contribution. In areas where bioturbation is significant relict glaciogenic sediments are reworked into the fine-grained diatomaceous sediments to produce poorly sorted fine sands and silts. Where the bottom waters are anoxic, sediments remain unbioturbated and have a high biogenic silica component. Three depositional and non-depositional facies can be recognised in the fjord: an area of non-deposition around the shoreline; a relict morainal facies in areas of low sedimentation and high bioturbation; and a basinal facies in the deeper areas of the fjord. |
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