Citation

Opik, A.A., 1962. Cambrian geology and palaeontology of the headwaters of the Burke River, Queensland. Bulletin  053. Bureau of Mineral Resources, Geology and Geophysics, Canberra.

Abstract

The position of the area described here as the 'Headwaters of the Burke River in the tropical zone of Australia is evident from the locality map, Figure 1. Topographically it is part of the Selwyn Range, which is a divide composed mainly of metamorphosed Precambrian rocks. These are described by Carter (1959), Carter & Brooks (1960), and Carter, Brooks, & Walker (1961). Structurally it is part of the Burke River Outlier, within which the Selwyn Range is built of Cambrian sediments, which are referred to as 'the Selwyn Range sequence'. This sequence is preserved here owing to post. Cambrian faulting that involves the whole Outlier; the Outlier itself is the northern segment of the Burke River Structural Belt, which extends south for another hundred miles. The headwaters of the Burke River are in the Selwyn Range, north-western Queensland. Exploration began in 1860; Cambrian fossils were discovered in 1931. Mapping by the Commonwealth Bureau of Mineral Resources (1952-1958) amplified the knowledge of the geology and palaeontology of the area. Four formations (Roaring Siltstone, Devoncourt Limestone, Selwyn Range Limestone, and O'Hara Shale) and one unit of beds (Mount Birnie Beds) constitute the Cambrian of the Selwyn Range sequence. The Mount Birnie Beds (sandstone, arkose, regolithic clay) occurs as erosional residuals on the basement. Unconformably above follows the Roaring Siltstone with shale and sandstone interbeds; above it rests the Devoncourt Limestone, flaggy and bituminous; the next higher is the Selwyn Range Limestone, a caIcilutite with chert and marly interbeds, overlain by the O'Hara Shale with interbeds of chert and sandstone. A Mesozoic conglomerate (erosional residuals) and alluvial deposits conclude the sequence.The position of the area described here as the 'Headwaters of the Burke River in the tropical zone of Australia is evident from the locality map, Figure 1. Topographically it is part of the Selwyn Range, which is a divide composed mainly of metamorphosed Precambrian rocks. These are described by Carter (1959), Carter & Brooks (1960), and Carter, Brooks, & Walker (1961). Structurally it is part of the Burke River Outlier, within which the Selwyn Range is built of Cambrian sediments, which are referred to as 'the Selwyn Range sequence'. This sequence is preserved here owing to post. Cambrian faulting that involves the whole Outlier; the Outlier itself is the northern segment of the Burke River Structural Belt, which extends south for another hundred miles. The headwaters of the Burke River are in the Selwyn Range, north-western Queensland. Exploration began in 1860; Cambrian fossils were discovered in 1931. Mapping by the Commonwealth Bureau of Mineral Resources (1952-1958) amplified the knowledge of the geology and palaeontology of the area. Four formations (Roaring Siltstone, Devoncourt Limestone, Selwyn Range Limestone, and O'Hara Shale) and one unit of beds (Mount Birnie Beds) constitute the Cambrian of the Selwyn Range sequence. The Mount Birnie Beds (sandstone, arkose, regolithic clay) occurs as erosional residuals on the basement. Unconformably above follows the Roaring Siltstone with shale and sandstone interbeds; above it rests the Devoncourt Limestone, flaggy and bituminous; the next higher is the Selwyn Range Limestone, a caIcilutite with chert and marly interbeds, overlain by the O'Hara Shale with interbeds of chert and sandstone. A Mesozoic conglomerate (erosional residuals) and alluvial deposits conclude the sequence.
Google map showing geographic bounding box with values North bound -21.0 East bound 140.0 West bound 137.5 South bound -24.0
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Product Type/Sub Type

dataset - GA Publication - Bulletin

Constraints

license
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

GA Publication
Bulletin
palaeontology
Earth Sciences

Resource Language

English

Resource Character Set

utf8

Resource Security Classification

unclassified

Geographic Extent

North bound
-21.0
East bound
140.0
West bound
137.5
South bound
-24.0

Lineage

Unknown

Digital Transfer Options

onLine

DISTRIBUTION Format

pdf

Distributor

Role
distributor
Organisation Name
Geoscience Australia
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address

Metadata File Identifier

a05f7892-7ffb-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 Date Stamp

1996-10-29

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