Sedimentary Processes in the Fjord-like Embayments of the Vestfold and Larsemann Hills

• Format: Dataset
• Language: unknown
• Published: Australian Ocean Data Network
• Subjects: oceans; EARTH SCIENCE > OCEANS > COASTAL PROCESSES > SEDIMENTATION; BIOLOGICAL CLASSIFICATION > PROTISTS > DIATOMS; PLANTS > MICROALGAE; PLANTS; MICROALGAE > BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > PHYTOPLANKTON; AEOLIAN; ANTARCTICA; BIOGENIC; FJORD; FLUVIAL; HOLOCENE; ICE-RAFTING; SEDIMENTS; TIDAL; VESTFOLD HILLS; FIELD SURVEYS; AMD/AU; CEOS; AMD; CONTINENT > GEOGRAPHIC REGION > POLAR; Vestfold Hills; Vestfold; Larsemann Hills; Ellis Fjord; Antarc*; Antarctica
• Online Access: https://researchdata.edu.au/sedimentary-processes-fjord-larsemann-hills/2819775

Progress Code: completed 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.