Product catalogue
Continental slope and rise geomorphology seaward of the Totten Glacier, East Antarctica (112°E-122°E)
The continental slope seaward of the Totten Glacier and Sabrina Coast displays a suite of submarine canyons separated by ridges. The ridges show a range of morphological features that indicate they form by accretion of pelagic and hemipelagic sediment which can be remobilised by mass movement. The study area can be divided into two areas with distinct geomorphological features. Canyons in the eastern part of the study area have concave thalwegs and are linked to the shelf edge and upper slope and show signs of erosion and deposition along their beds suggesting cycles of activity controlled by climate cycles. The major canyon in the western part of the area has a convex thalweg. It is likely fed predominantly by mass movement from the flanks of the adjacent ridges with less input sediment from the shelf edge. The ridges between canyons in the Eastern part of the study area are asymmetric with crests close to the west bank of adjacent canyons and are mostly formed by westward advection of fine sediment lofted from turbidity currents and deposition of pelagic sediment. The ridges in the western part of the study area are more likely fully contourites, formed by accretion of suspended sediment with their associated canyons fed by flows derived predominantly from slumping on the adjacent ridge flanks. Canyons and ridges in the eastern part of the study area lie to the east of the Totten Glacier and are seaward of small ice drainage basins feeding the Moscow University Ice Shelf. Ridges and canyons in the western part of area formed from sediment transported along the margin and from detritus originating from the Totten Glacier. Higher sediment supply produced larger, shallower ridges that interact with ocean currents and coincide with a long-lived depocenter. The overall geomorphology of the Sabrina Coast slope is part of a continuum of mixed contourite-turbidite systems identified on the Antarctic margin. These ridges are thus prime locations to sample for sedimentary records of the Totten Glacier’s interaction with the adjacent ocean.
<b>Citation:</b> E. O'Brien, A.L. Post, S. Edwards, T. Martin, A. Caburlotto, F. Donda, G. Leitchenkov, R. Romeo, M. Duffy, D. Evangelinos, L. Holder, A. Leventer, A. López-Quirós, B.N. Opdyke, L.K. Armand, Continental slope and rise geomorphology seaward of the Totten Glacier, East Antarctica (112°E-122°E), <i>Marine Geology</i>, Volume 427, 2020, 106221, ISSN 0025-3227,
Simple
Identification info
- Date (Creation)
- 2019-05-02
- Date (Publication)
- 2023-10-20T05:21:39
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/128487
- Cited responsible party
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Role Organisation / Individual Name Details Author O'Brien, P.E.
Author Post, A.L.
Author Edwards, S.
External Contact Author Martin, T.
External Contact Author Caburlotto, A.
External Contact Author Donda, F.
Author Leitchenkov, G.
Author Romeo, R.
External Contact Author Duffy, M.
External Contact Author Evangelinos, D.
External Contact Author Holder, L.
Author Leventer, A.
Author Lopez-Quiros, A.
External Contact Author Opdyke, B.N.
Author Armand, L.K.
Publisher Elsevier B.V.
External Contact
- Name
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Marine Geology
- Issue identification
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Volume 427, September 2020, 106221
- Purpose
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Article written for publication in Marine Geology
- Status
- Completed
- Spatial representation type
- Topic category
-
- Geoscientific information
Extent
Temporal extent
- Time period
- 2017-01-14 2017-03-05
Extent
))
- Maintenance and update frequency
- As needed
Resource format
- Title
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Product data repository: Various Formats
- Website
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Data Store directory containing the digital product files
Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes
- theme.ANZRC Fields of Research.rdf
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ENVIRONMENTAL SCIENCES
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EARTH SCIENCES
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- Keywords
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Antarctica
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- Keywords
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Continental slope and rise
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- Keywords
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Totten Glacier
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- Keywords
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Submarine cnayons
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- Keywords
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Ridges
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- Keywords
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Published_External
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Resource constraints
- Title
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Creative Commons Attribution 4.0 International Licence
- Alternate title
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CC-BY
- Edition
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4.0
- Access constraints
- License
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- License
- Other constraints
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Crown Copyright © 2020
Resource constraints
- Title
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Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
- Language
- English
- Character encoding
- UTF8
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Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice facsimile
- OnLine resource
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Link to Journal
Link to Journal
- Distribution format
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Resource lineage
- Statement
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Article written for publication in Marine Geology
Metadata constraints
- Title
-
Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
-
urn:uuid/7f8eb61a-ca3e-49d7-84c5-84b8c5b54c77
- Title
-
GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
-
Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Owner Post, A.
Space Division Internal Contact Point of contact Post, A.
Space Division Internal Contact
Type of resource
- Resource scope
- Document
- Name
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Journal Articles and Conference Papers
Alternative metadata reference
- Title
-
Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/128487
- Date info (Creation)
- 2019-04-08T01:55:29
- Date info (Revision)
- 2019-04-08T01:55:29
Metadata standard
- Title
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AU/NZS ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-3
- Title
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Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
-
Version 2.0, September 2018
- Citation identifier
- https://pid.geoscience.gov.au/dataset/ga/128040