Citation

Smith, E.R., 1962. L024 Wandagee Hill/Middalya seismic reflection survey, WA, 1955. Record  . Geoscience Australia, Canberra.

Abstract

Middalya in the Carnarvon Basin, Western Australia, during October 1955 by the Bureau of Mineral resources. The object of the survey was to assist in interpreting gravity results in the region. Prior to this survey the interpretation of the geology suggested that the deepest part of the Palaeozoic basin was in the Wandagee Hill area, but gravity results indicated that a basement ridge may exist in this same area. The seismic results indicate a sedimentary thickness of at least 17,000 ft between Wandagee Hill and Middalya and possibly 24,000 ft thickness to the east of Middalya. Although no useful information was obtained in the immediate vicinity of Wandagee Hill, extrapolation of results from farther east, suggests that the basement may be as shallow as 6000 ft just west of Wandagee Hill. This would confirm the interpretation of the gravity results at this location. The seismic cross-section shows that there may be a large elevation of the basement over a region about 20 miles west of Middalya between Shot-points 90 and 113. Although there is no direct evidence of this in the gravity results, it may be related to faulting, particularly a fault four miles east of Middalya that is indicated both by surface geology and by gravity results.
Google map showing geographic bounding box with values North bound -23.75 East bound 115.0 West bound 114.25 South bound -24.0
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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
geophysics
petroleum exploration
seismic reflection
Seismology and Seismic Exploration

Resource Language

English

Resource Character Set

utf8

Resource Security Classification

unclassified

Geographic Extent

North bound
-23.75
East bound
115.0
West bound
114.25
South bound
-24.0

TEMPORAL EXTENT

1955-10-03 / 1955-11-05

Lineage

During October 1955 a seismic party of the Bureau of Mineral Resources undertook field work in the Wandagee/Middalya area, 100 miles north-east of Carnarvon, Western Australia. Reflection profiling was carried out along the main road between Wandagee Hill and Middalya, and also east of Middalya. A detailed gravity traverse was made along this road in 1951, but it could not be interpreted consistently with the geology accepted at the time (Chamberlain, Dooley, and Vale ,1954). It was considered that a seismic reflection cross-section along the same traverse might help in interpreting the gravity results. Later geological data have enabled a possible reconciliation to be made between the gravity and geological interpretations.

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

de71c515-71ee-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