Citation

Vale, K.R. & Moss, F.J., 1962. L017 & L027 Cookernup seismic reflection and refraction survey, WA, 1955_1956. Record  . Geoscience Australia, Canberra.

Abstract

Seismic reflection traverses were surveyed across the Perth Basin at Cookernup, W.A. These traverses were planned to find the thickness and dip of the Basin sediments adjacent to the Darling Scarp and to discover any faulting or folding within them; also to determine the applicability of the seismic method as a tool for both regional and detailed investigation in this area. Seismic refraction traverses were surveyed to help in the solution of problems encountered in the interpretation of the reflection cross-sections. The survey indicated a considerable thickness of sediments about 20,000 ft, at the eastern margin of the Basin near the Darling Scarp, and suggested tectonic structure that is not indicated in surface geology, The reflection traverses indicated that sediments (presumably Lower Palaeozoic or Precambrian) lying deep in the Perth Basin may continue underneath the Darling Scarp and abut the granitic gneisses etc. of the Western Australian Shield on an overthrust fault plane. The overthrust fault, if it exists, does not reach the surface, but is covered to a depth of possibly some few hundred feet by younger sediments and also by alluvium eroded from the Darling Scarp. Some reflection and refraction shooting was done in an attempt to test this and other hypotheses, but the results crc inconclusive. Gravity results strongly suggest a normal fault, and if normal faulting is the case, the reflections from beneath the outcropping basement are possibly derived from shear zones, Some probable 'reflected refractions' were also observed. There is scope for further seismic testing but it is considered that conclusive evidence could only be provided by drilling.
Google map showing geographic bounding box with values North bound -32.75 East bound 116.0 West bound 115.5 South bound -33.25
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Product Type/Sub Type

dataset - Seismic Data - seismic survey

Constraints

restricted
Creative Commons Attribution 3.0 Australia Licence

IP Owner

Commonwealth of Australia (Geoscience Australia)

Author(s)

Date (publication)

1962

Product Type

dataset

Topic Category

geoscientificInformation

Keywords

Seismic Data
seismic survey
seismic velocity
geophysics
petroleum exploration
seismic refraction
seismic reflection
Seismology and Seismic Exploration

Resource Language

English

Resource Character Set

utf8

Resource Security Classification

unclassified

Geographic Extent

North bound
-32.75
East bound
116.0
West bound
115.5
South bound
-33.25

TEMPORAL EXTENT

1956-01-01 / 1956-01-01

Lineage

The Cookernup area, about 75 miles miles south of Perth, lies in the Perth Basin which extends from Cape Leewin in the south to Geraldton in the north. Gravity work by the Bureau of Mineral Resources, Geology and Geophysics in the Perth Basin (Thyer & Everingham, 1956; and Neumann & Flavelle, in preparation) indicates a considerable thickness of sediments and shows steep Bouguer anomaly gradients in the vicinity of the Darling Scarp. During February and March 1955 a Bureau seismic party carried out surveys in the Gingin area, about 45 miles north of Perth, and in the Cookernup area, to verify conclusions drawn from the gravity results, and to continue the study of the Perth Basin l using the seismic reflection method. This was part of a proposal to use the seismic surveys to assist in determining the thickness of sediments and the structure of the Basin at several locations. The Bureau seismic party revisited the Perth Basin in 1956 to do surveys at Busselton and Rockingham; additional work was done at Cookernup in 1956.

Digital Transfer Options

onLine

DISTRIBUTION Format

misc

Distributor

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

Metadata File Identifier

de71c515-71f1-04f0-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

2013-06-06

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