Abstract

To meet the formal requirements for the collection, interpretation and analysis ofenvironmental baseline data in Australia's offshore areas in which further petroleumexploration could take place, the modern geological processes, Quaternary evolutionand environmental features of the potential release area(s) in the Van Diemen Rise(East Malita Graben, Timor Sea) which will be included in the first release of 1992are described, analysed and interpreted. The potential release area(s) overlie part of the Van Diemen Rise in the eastern partof the Timor Sea in the vicinity of Cootamundra and Evans Shoals. Sea bottomsediments in the region are dominantly calcareous sand grade and derived from thebreakdown of skeletal material which has developed on an extensive number ofbanks and shoals which characterise this part of the continental shelf. The sea bottom is also marked by a number of sinuous and narrow curvilinearchannel like features which along with other geomorphic elements are attributed tothe effects of subaerial exposure and weathering of the carbonate shelf sedimentwedge during Quaternary lower sea level stages, as well as marine and coastalprocesses which occurred during sea level rise and marine inundation. The Holocene rise in sea level has resulted in inundation of a large number of wave-cut scarps, channels and flat top banks, the latter of which became the focus ofcarbonate reef growth and hence a source of much of the sand-grade carbonatesediments evident on the sea floor.
Google map showing geographic bounding box with values North bound East bound West bound South bound
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Product Type/Sub Type

nonGeographicDataset

Constraints

Creative Commons Attribution 4.0 International Licence

IP Owner

Commonwealth of Australia (Geoscience Australia)

Author(s)

Date (publication)

1992-01-01T00:00:00

Product Type

nonGeographicDataset

Topic Category

geoscientificInformation

GA Catalogue Number

14541 Product http://www.ga.gov.au/metadata-gateway/metadata/record/14541/

Keywords

GA Publication
Record
geology
petroleum exploration
Earth Sciences

Resource Language

English

Resource Character Set

utf8

Resource Security Classification

unclassified

Digital Transfer Options

onLine

Distributor

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

Metadata File Identifier

a05f7892-74db-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 SECURITY CLASSIFICATION

unclassified

Metadata Contact

Role
pointOfContact
Organisation Name
Commonwealth of Australia (Geoscience Australia)
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address
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