Abstract

This report gives the results of seismic refraction surveys undertaken in response to an application from the Irrigation and Water Supply Commission of Queensland; the areas surveyed are the sites of two dams which are proposed for development of the Mary Valley. At the Yabba Creek 19.3M site the depth to bedrock ranges from 10 to 80 ft. A comparison with diamond drilling information shows that the seismic depth determinations are accurate to within 10 ft. The value of Poisson's ratio calculated from longitudinal and transverse wave velocities is 0.39. Assuming g bedrock density 2.7 g/cm3 the value of Young's modulus is 100000000 lb/in2. At the Amamoor Creek 14.7M site the depth to bedrock ranges from 19 to 108 ft. On the right bank (looking down stream) the calculated depths to bedrock are different when shot parallel and perpendicular to the strike of the strata; the discrepancy is explained by the phenomenon of hillside creep. On the left bank a shear zone is indicated. For the bedrock the value of Young's modulus estimated from an empirical relation ranges from 1.6 to 5.3 x 10000000 lb/in2 .Two positions for test drilling to check and control the seismic interpretation are indicated.
Google map showing geographic bounding box with values North bound -26.0 East bound 153.0 West bound 152.5 South bound -26.5
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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)

1961-01-01T00:00:00

Product Type

nonGeographicDataset

Topic Category

geoscientificInformation

GA Catalogue Number

10832 Product http://www.ga.gov.au/metadata-gateway/metadata/record/10832/

Keywords

GA Publication
Record
seismics
AU-QLD
Earth Sciences

Resource Language

English

Resource Character Set

utf8

Resource Security Classification

unclassified

Geographic Extent

North bound
-26.0
East bound
153.0
West bound
152.5
South bound
-26.5

Lineage

Legacy product, lineage not available

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

Source Description

Legacy product, source data not available.

Metadata File Identifier

a05f7892-7dc1-7506-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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