Abstract

This Record describes seismic refraction and resistivity traversing surveys carried out at the request of the Hydro Electric Commission of Tasmania at a proposed dam site on the Huon River, up stream from its junction with Blackfish Creek. The purpose of the surveys was to determine the nature and thickness of the overburden and the nature of the bedrock. The overburden consists of scree material, sand, soil, clay, and weathered and recemented dolerite. In many places the seismic velocity in the weathered and especially the recemented dolerite indicates that these rocks are of sufficient strength for foundation purposes. Seismic results indicate that the overburden thickness ranges from 20 to 316 ft. Over most of the area, the estimated average overburden thickness is about 70 to 80 ft, although over about one sixth of the area the estimated overburden thickness ranges from 130 to 316 ft. The greatest thickness is indicated on the western bank. The bedrock consists mainly of unweathered dolerite, although the seismic velocities and drilling data indicate that the bedrock corresponds, in some instances, to partly weathered or recemented dolerite. It is estimated that the depth to bedrock has been calculated within 30 per cent.
Google map showing geographic bounding box with values North bound -43.0 East bound 146.0 West bound 146.0 South bound -43.0
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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)

1962-01-01T00:00:00

Product Type

nonGeographicDataset

Topic Category

geoscientificInformation

GA Catalogue Number

10966 Product http://www.ga.gov.au/metadata-gateway/metadata/record/10966/

Keywords

GA Publication
Record
geophysics
AU-TAS
Earth Sciences

Resource Language

English

Resource Character Set

utf8

Resource Security Classification

unclassified

Geographic Extent

North bound
-43.0
East bound
146.0
West bound
146.0
South bound
-43.0

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-ff1e-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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