Abstract

Five new Carboniferous to Permian palynological Oppel-zones have been identified through detailed analyses of core samples taken from the Joe Joe Group sediments of the Galilee Basin. In ascending stratigraphic order, and in relation to their host formations , the Oppel-zones are: the Verrucosisporites basiliscutis Oppel-zone (A), spanning the Lake Galilee Sandstone and the basal Jericho Formation; the Brevitriletes leptoacaina Oppel-zone (B), in the mid-Jericho Formation ; the Diatomozonotriletes birkheadensis Oppel-zone (C), in the upper Jericho Formation; the Asperispora reticulatispinosus Oppel-zone (D), encompassing much of the Jochmus Formation and the uppermost part of Jericho Formation (including the Oakleigh Siltstone Member); and the Microbaculispora tentula Oppel-zone (E), in the upper part of the Jochmus Formation. The three oldest Oppel-zones are grouped to form the Carboniferous (Namurian A-upper Westphalian D) Spelaeotriletes queenslandensis Superzone, which correlates with the Spelaeotriletes ybertii Assemblage of earlier workers. The overlying Asperispora reticulatispinosus Oppel-zone (D) (upper Westphalian D-Upper Autunian, or early Asselian) mostly correlates with the Potonieisporites Assemblage. The uppermost Microbaculispora tentula Oppel-zone (E), late Autunian (late Carboniferous) to early Tastubian (Early Permian), correlates with the Upper Stage 2. Application of the Oppel-zones has clarified relationships between outcrop sections of the earlier defined Joe Joe Formation of the Galilee Basin and lithological units subsequently identified in the sub-surface. Stratigraphic interpretation of the Oppel-zones with their lithostratigraphic equivalents suggests that late Palaeozoic glaciation began in the Westphalian D and continued until the late Asselian/earliest Tastubian, when climatic warming resulted in sea level rise associated with continental glacial melting. The palynological record shows the impact of this glacial episode, which caused significant global compositional changes in palynofloras in the Late Carboniferous/Early Permian. These changes may allow correlations between Gondwana and Laurasia. Eleven new species of miospore are described.
Google map showing geographic bounding box with values North bound -18.5 East bound 154.0 West bound 138.0 South bound -30.0
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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)

1992-01-01T00:00:00

Product Type

nonGeographicDataset

Topic Category

geoscientificInformation

GA Catalogue Number

81315 Product http://www.ga.gov.au/metadata-gateway/metadata/record/81315/

Keywords

GA Publication
Journal
QLD
Earth Sciences

Resource Language

English

Resource Character Set

utf8

Resource Security Classification

unclassified

Geographic Extent

North bound
-18.5
East bound
154.0
West bound
138.0
South bound
-30.0

Lineage

Unknown

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

Source data not available.

Metadata File Identifier

fae9173a-7100-71e4-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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