Abstract

A seismic aluvey was made between St George and the Queensland/South Australia border in the latter half of 1962. The results of the part of the survey over the Surat Basin, the Nebina Ridge, and the Eulo Shelf are presented in this Record. The survey aimed at providing information on the nature and structure,of the rocks underlying the Mesozoic sediments of the Great Artesian Basin, in particular across the Nebine Ridge and Eulo Shelf. The results of the survey between St George and Bollon indicated a sedimentary section of the order of 5000 ft overlying a basement rock of either metamorphic or igneous origin. The-deepest section recorded was of about 5700 ft, about 12 miles west of St George and probably corresponds to the Boolba Trough suggested by Jenkins (1958). The sedimentary section becomes gradually thinner westward as the Nebine Ridge is approached and about 3000 ft of sediments were recorded about ten miles west of Bollon. A reflection traverse northwards along the axis of the Boolba Trough indicated a thinning of sedimentary section of about 40 ft per mile. No structural explanation for a magnetic lineament interpreted from aeromagnetic work was found. Velocities of over 19,000 ft/s were recorded from granitic rocks at shallow depths over the Nebine Ridge. A velocity of 19,500 ft's was measured close to a granite outcrop at Eulo. A thickening of the sedimentary section between the Eulo Shelf and Nebine Ridge was confirmed by refraction shooting and depths indicated that the total section (3300 ft) was not significantly greater than the depth of the water bores. No apparent development of the trough to the north or west was indicated.
Google map showing geographic bounding box with values North bound -27.25 East bound 148.75 West bound 144.75 South bound -28.25
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Product Type/Sub Type

dataset

Constraints

Creative Commons Attribution 4.0 International Licence

IP Owner

Commonwealth of Australia (Geoscience Australia)

Author(s)

Date (publication)

1966-01-01T00:00:00

Product Type

dataset

Topic Category

geoscientificInformation

GA Catalogue Number

76440 Product http://www.ga.gov.au/metadata-gateway/metadata/record/76440/

Keywords

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

Resource Language

English

Resource Character Set

utf8

Resource Security Classification

unclassified

Geographic Extent

North bound
-27.25
East bound
148.75
West bound
144.75
South bound
-28.25

TEMPORAL EXTENT

1962-07-27 / 1962-07-30

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

dedbfd1f-11ed-72e2-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
Related Links