Authors / CoAuthors
Radke, L.C. | Trafford, J.
Abstract
Geoscience Australia undertook a marine survey of the Vlaming Sub-basin in March and April 2012 to provide seabed and shallow geological information to support an assessment of the CO2 storage potential of this sedimentary basin. The survey was undertaken under the Australian Government's National CO2 Infrastructure Plan (NCIP) to help identify sites suitable for the long term storage of CO2 within reasonable distances of major sources of CO2 emissions. The Vlaming Sub-basin is located offshore from Perth, Western Australia, and was previously identified by the Carbon Storage Taskforce (2009) as potentially highly suitable for CO2 storage. The principal aim of the Vlaming Sub-basin marine survey (GA survey number GA334) was to look for evidence of any past or current gas or fluid seepage at the seabed, and to determine whether these features are related to structures (e.g. faults) in the Vlaming Sub-basin that may extend up to the seabed. The survey also mapped seabed habitats and biota in the areas of interest to provide information on communities and biophysical features that may be associated with seepage. This research addresses key questions on the potential for containment of CO2 in the Early Cretaceous Gage Sandstone (the basin's proposed CO2 storage unit) and the regional integrity of the South Perth Shale (the seal unit that overlies the Gage Sandstone). This dataset comprises chlorin analyses (total chlorins and chlorin indices) from seabed sediments (0-2 cm).
Product Type
dataset
eCat Id
78550
Contact for the resource
Custodian
Owner
Custodian
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Digital Object Identifier
Keywords
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- Marine Data
- ( Theme )
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- marine environmental baselines
- ( Theme )
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- geochemistry
- ( Theme )
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- continental shelf
- ( Theme )
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- seabed
- ( Theme )
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- marine
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- WA
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Marine Geoscience
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- Published_External
Publication Date
2013-01-01T00:00:00
Creation Date
Security Constraints
Legal Constraints
Status
Purpose
Maintenance Information
asNeeded
Topic Category
oceans
Series Information
Lineage
Bottom sediments were collected using a Shipek grab. Chlorins were extracted from freeze-dried sediment using the method of Schubert et al. (2005). Relative standard deviations of the precision estimates on duplicate samples averaged 2.5% for total chlorins and 1% for chlorin indices (the data for each sample is provided). Schubert, C.J., Niggemann, J., Klockgether, G., and Ferdelman, G., 2005. Chlorin Index: A new parameter for organic matter freshness in sediment. Geochemistry Geophysics and Geosystems 6(3), 1-12. Thanks to the crew of the RV Southern Supporter for help with sample collection, and Jessica Byass for preparing the samples for analysis.
Parent Information
Extents
[-32.298055, -31.837511, 115.297386, 115.461006]
Reference System
Spatial Resolution
Service Information
Associations
Downloads and Links
Link to Data and information on seabed environments of the Vlaming sub-basin, Western Australia.
Link to Underwater video footage from the Vlaming Sub-basin (GA334)
Link to Seabed Environments and Shallow Geology of the Vlaming Sub-Basin, Western Australia - Supporting Investigation for Geological Storage of CO2 GA334 Marine Environmental Survey Post-Survey Report
Link to GA0334 Vlaming sub-basin Species identification of worms from grab
Link to Vlaming Sub-Basin Marine Environmental Survey (GA-0334/S. Supporter GP1373)(NCIP Program) - High Resolution Bathymetry grids
Link to Seabed environments and shallow geology of the Vlaming sub-basin, Western Australia: Inorganic elements of seabed sediments.
Link to Seabed environments and shallow geology of the Vlaming sub-basin, Western Australia: Bulk organic carbon and nitrogen isotopes and concentrations in seabed sediments.
Link to Seabed environments and shallow geology of the Vlaming sub-basin, Western Australia: Sediment oxygen demand of seabed sediments.
Link to Seabed environments and shallow geology of the Vlaming sub-basin, Western Australia: Chlorophyll a, b and c of seabed sediments.
Link to Seabed environments and shallow geology of the Vlaming sub-basin, Western Australia: %carbonate and specific surface area of seabed sediments.
Link to Seabed Environments and shallow sub-surface geology of the Vlaming Sub-basin, offshore Perth Basin: Summary results from marine survey GA0334
Link to Seabed environments and shallow geology of the Vlaming sub-basin, Western Australia: Grain size and carbonate concentrations of seabed sediment.
Link to An Integrated Study of the CO2 Storage Potential in the Offshore Vlaming Sub-Basin: Results of the study undertaken as part of the NCIP program
Link to Ecology / Infaunal morphospecies identifications from the Vlaming Sub-basin (GA0334)
Link to Predicted seabed gravel, mud and sand content in the Vlaming sub-basin in the Australian continental EEZ 2013
Link to Seabed environments and shallow geology of the Vlaming sub-basin, Western Australia - interpreted geomorphic map.
Link to Vlaming Sub-Basin Marine Environmental Survey (GA-0334/S. Supporter GP1373)(NCIP Program) - High Resolution Backscatter grids
Link to Vlaming Sub-Basin Marine Environmental Survey (GA-0334/S. Supporter GP1373)(NCIP Program) - Sidescan grids
Link to Processed sub-bottom profiler data - Seabed environments and shallow geology of the Vlaming Sub-basin, offshore Perth Basin (GA0334)
Source Information
Source data not available.