Abstract

Under the Australian Government's Offshore Energy Security Program, Geoscience Australia conducted a marine reconnaissance survey (GA2476) from October 2008 to January 2009 using the German research vessel RV Sonne. The 90-day survey acquired geological and geophysical data over poorly known areas of the Zeewyck and Houtman sub-basins (Perth Basin), the southern Exmouth Sub-basin and Bernier Platform (southern parts of the Carnarvon Basin) and the Cuvier Plateau (also referred to as the Wallaby Plateau). Over the duration of the survey, a total of 229 000 square kilometres of multi-beam sonar data and almost 25 000 line kilometres of gravity, magnetic and sub-bottom profiler data was collected. Geological targets were identified using a combination of pre-existing seismic lines, concurrently acquired seismic lines (Geoscience Australia survey 310) and simultaneously acquired swath bathymetry, sub-bottom profiler records and camera tows. In general, submarine canyons provided the best opportunity for sampling the pre-breakup sedimentary strata as they were deeply incised and had steep slopes. Other steep slopes were identified in scarps, ridges and peak features. Sites were selected mainly to recover rocks from the pre-breakup succession (Valanginian and older) in order to determine the synrift sedimentary rocks and to identify any potential source rocks. A number of dredges were also acquired to sample the post-breakup succession and peak features that were potentially volcanic. Thirty stations operating in water depths from 1,000 to 5,000 metres recovered rocks. Rock types, age constraints, depositional environments and geochemistry results from the rock samples have been tied into the tectonostratigraphic framework for the frontier depocentres (identified in GA's new s310 seismic data and vintage seismic data). The insight gained has helped assess the potential petroleum system elements for these frontier depocentres and will feed into petroleum system modelling.
Google map showing geographic bounding box with values North bound -21.0 East bound 117.0 West bound 107.0 South bound -33.0
Downloads
For information on acquiring this product,
please contact the Geoscience Australia Sales Centre via:

fax:
+61 2 6249 9960; or
phone:
1800 800 173 (within Australia);
 
+61 2 6249 9966 (outside Australia).

Please note that support hours are 9 am to 5 pm weekdays

Product Type/Sub Type

dataset - GA Publication - Other Publication

Constraints

license
Creative Commons Attribution 3.0 Australia Licence

IP Owner

Commonwealth of Australia (Geoscience Australia)

Author(s)

Date (publication)

2010

Product Type

dataset

Topic Category

geoscientificInformation

Keywords

GA Publication
Other Publication
geochemistry
palaeontology
sedimentary basins
marine survey
petroleum exploration
Earth Sciences

Resource Language

English

Resource Character Set

utf8

Resource Security Classification

unclassified

Geographic Extent

North bound
-21.0
East bound
117.0
West bound
107.0
South bound
-33.0

Lineage

Unknown

Digital Transfer Options

onLine+hardcopy

DISTRIBUTION Format

pdf

Distributor

Role
distributor
Organisation Name
Geoscience Australia
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address

Metadata File Identifier

a05f7892-f838-7506-e044-00144fdd4fa6

Metadata Standard Name

ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata

Metadata Standard Version

1.1

Metadata Date Stamp

2010-06-22

METADATA SECURITY CLASSIFICATION

unclassified

Metadata Contact

Role
pointOfContact
Organisation Name
Geoscience Australia
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address
Downloads
For information on acquiring this product,
please contact the Geoscience Australia Sales Centre via:

fax:
+61 2 6249 9960; or
phone:
1800 800 173 (within Australia);
 
+61 2 6249 9966 (outside Australia).

Please note that support hours are 9 am to 5 pm weekdays