Abstract

This preliminary report deals with examination and classification of Ordovician, Middle and Upper Devonian limestone samples collected in the Fitzroy Basin during August, September and October of 1953. The geology of the area has recently been described by Guppy (1953). Rocks are designated by their field numbers, as geologists of West Australian Petroleum Limited, in conjunction with whom the collection was made, have retained the numbers for reference. For purposes of petrographic discussion, the nomenclature of clastic limestones as set out by Condon (1953) is used. Basic information sought in investigations of most limestones concerns: 1) Composition: distinction between calcite and dolomite is important; [and] 2) Origin: the origin of many limestones is very complex, but division into clastic, organic or chemical limestone should be attempted. Texture, both as observed under the microscope and in handspecimens is very useful, but in some cases (especially bioherms) field evidence supplies the only criterion. This paper has two main sections. The section on determination of composition describes techniques for distinction between calcite and dolomite, and the section on description of specimens incorporates suggestions about origin and environment of deposition where these logically arise from examination of textural or other features. 78 thin sections were examined, and textures typical of limestones of the area are illustrated by photomicrographs.
Google map showing geographic bounding box with values North bound -15.0 East bound 128.0 West bound 123.0 South bound -20.0
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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)

1954-01-01T00:00:00

Product Type

nonGeographicDataset

Topic Category

geoscientificInformation

GA Catalogue Number

9135 Product http://www.ga.gov.au/metadata-gateway/metadata/record/9135/

Keywords

GA Publication
Record
petrography
petrology
AU-QLD
Earth Sciences

Resource Language

English

Resource Character Set

utf8

Resource Security Classification

unclassified

Geographic Extent

North bound
-15.0
East bound
128.0
West bound
123.0
South bound
-20.0

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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

a05f7892-8053-7506-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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