Palynology of the Cenomanian of Bathurst Island, Northern Territory, Australia

Bathurst Island lies north of Darwin, Northern Territory; it measures 2050 km2 Cenomanian marine argillaceous sediments are exposed in cliffs at the south coast, and were first reported and diagnosed to be of Cretaceous age by Daily in 1955. Molluscs collected from various outcrop localities were dated mid- to late Cenomanian by Wright in 1963. Gravity and seismic refraction surveys by petroleum companies since 1956established the presence of a considerable rock sequence of Mesozoic age. Subsequent regional field work by the BMR concluded that the Cenomanian strata probably accumulated in a shallow sea bordered in the north by scattered land areas. Two wells, Bathurst Island Nos. I and 2, penetrated the rock sequence at the south coast of the island to a depth of slightly over 300 m, and were continuously cored. Examination of ammonites and foraminifera established the sequence as Cenomanian to possibly lower Turonian.Samples from 20 cores from these wells were selected for palynological study. The results are presented in this Bulletin. The spores and pollen grains are thought to have been shed by temperate vegetation. The spore-pollen sequence is divided into 2 intervals, palynological unit K3a, of Cenomanian age, and palynological unit K3b, of possibly early Turonian age. Dinoflagellate Zone. Two subdivisions are distinguished: a lower Subzone, ofCenomanian age, and an upper Subzone, of late Cenomanian to possibly early Turonian age. In the descriptive and taxonomic work of the microplankton by M. S. Norvick, 104 dinoflagellate cyst and 16acritarch species, varieties, and species groups are differentiated, belonging to a total of 61 previously known genera. Eight new species of dinoflagellate cysts are described: and In the systematic study of the spores and pollen grains by D. Burger, 40 spore species and 23 pollen species are described or documented. Two new genera, and 7 new species are proposed: and 1956 established

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Date (Publication)
1975-01-01T00:00:00
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/94

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Bureau of Mineral Resources, Geology and Geophysics

 Canberra
Author

Norvick, M.S.

 1
Author

Burger, D.

 2
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Bulletin

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151

ISBN

0642000964

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Commonwealth of Australia (Geoscience Australia)
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Commonwealth of Australia (Geoscience Australia)

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Product data repository: Various Formats

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  • Bulletin

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  • AU-NT

Australian and New Zealand Standard Research Classification (ANZSRC)

  • Earth Sciences

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  • Published_External

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Creative Commons Attribution 4.0 International Licence

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4.0

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http://creativecommons.org/licenses/

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Australian Government Security ClassificationSystem

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2018-11-01T00:00:00
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Unclassified
Language
English
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UTF8

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Commonwealth of Australia (Geoscience Australia)

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OnLine resource

Download the Bulletin (pdf)

Download the Bulletin (pdf)

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  • pdf

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Title

Australian Government Security ClassificationSystem

Edition date
2018-11-01T00:00:00
Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

Classification
Unclassified

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Metadata identifier
urn:uuid/a05f7892-7fb5-7506-e044-00144fdd4fa6

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GeoNetwork UUID

Language
English
Character encoding
UTF8
Contact
Role Organisation / Individual Name Details
Point of contact

Commonwealth of Australia (Geoscience Australia)

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Type of resource

Resource scope
Document
Name

Legacy AGSO BMR Bulletins

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Geoscience Australia - short identifier for metadata record with

uuid

Citation identifier
eCatId/94

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https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/a05f7892-7fb5-7506-e044-00144fdd4fa6

Date info (Revision)
2018-04-20T06:03:21
Date info (Creation)
1996-10-29T00:00:00

Metadata standard

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AU/NZS ISO 19115-1:2014

Metadata standard

Title

ISO 19115-1:2014

Metadata standard

Title

ISO 19115-3

Title

Geoscience Australia Community Metadata Profile of ISO 19115-1:2014

Edition

Version 2.0, September 2018

Citation identifier
https://pid.geoscience.gov.au/dataset/ga/122551

 
 

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