Authors / CoAuthors
Rollet, N. | McGiveron, S. | Hashimoto, T.
Abstract
Fluid escape features and their correlation with subsurface geology have been studied in the Capel and Faust basins, offshore Eastern Australia, as part of the petroleum prospectivity assessment of these frontier basins. New high resolution 2D seismic, gravity, magnetic and multibeam bathymetry data significantly improved the geological understanding of the area through imaging of the deeper structure of sedimentary depocentres and exposure of a wide range of seafloor features. Integration of seafloor features identified on multibeam bathymetry data with subsurface fluid flow pathways interpreted from seismic data provides insights into the nature of fluid flow mechanisms and seal integrity in the Capel and Faust basins. Seafloor features identified include mega-pockmarks, polygonal faults, buried mud-volcanoes, forced-folds above saucer-shape sills, and slope failures with associated debrites along basement bounding faults. The correlation between the distributions of modern bathymetric features and subsurface fluid flow pathways indicate that fluid flow has been mainly driven by Cenozoic igneous activity. The magmatism and fluid flow activity have implications for petroleum prospectivity. Ongoing magmatism, fluid flow and fault reactivation during the Cenozoic adds to the risk of hydrocarbon charge relative to regional seal formation and structure emplacement. Hydrocarbon accumulations that may have formed within the deeper syn-rift and the pre-rift sections are less likely to have been affected by the Cenozoic magmatic and fluid flow processes and, therefore, may represent lower-risk exploration targets.
Product Type
nonGeographicDataset
eCat Id
73383
Contact for the resource
Custodian
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Keywords
-
- External Publication
- ( Theme )
-
- fluid flow pathways
- ( Theme )
-
- petroleum exploration
- ( Theme )
-
- marine
- Australian and New Zealand Standard Research Classification (ANZSRC)
-
- Earth Sciences
-
- Published_Internal
Publication Date
2012-02-07T00:00:00
Creation Date
Security Constraints
Legal Constraints
Status
Purpose
Maintenance Information
unknown
Topic Category
geoscientificInformation
Series Information
Lineage
Unknown
Parent Information
Extents
Reference System
Spatial Resolution
Service Information
Associations
Downloads and Links
Source Information
Source data not available.