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Integrated uppermost Campanian-Maastrichtian calcareous nannofossil and foraminiferal biostratigraphic zonation of the northwestern margin of Australia

R. W. Howe, R. J. Campbell and J. P. Rexilius
Integrated uppermost Campanian-Maastrichtian calcareous nannofossil and foraminiferal biostratigraphic zonation of the northwestern margin of Australia
Journal of Micropalaeontology (July 2003) 22, Part 1: 29-62

Abstract

During the latest Campanian-Maastrichtian the northwestern Australian margin was situated between the cool-water Austral Province to the south and the warm-water Tethyan Province to the north. The transitional nature of calcareous microfossil assemblages on the margin makes application of Tethyan biostratigraphic zonation schemes awkward, as many marker-species are missing or have different ranges. This study presents an integrated uppermost Campanian-Maastrichtian calcareous microfossil zonation based on two Ocean Drilling Program (ODP) holes on the Exmouth Plateau and eight petroleum exploration wells from the Vulcan Sub-basin. The zonation is refined and revised from the previously unpublished KCN (nannofossils), KPF (planktonic foraminifera), KBF (benthonic foraminifera) and KCCM (composite nannofossil and planktonic foraminifera) zonations, which are commonly used for petroleum exploration wells drilled on the northwestern margin. Revision of the zonations has highlighted a major Upper Campanian to lower Upper Maastrichtian disconformity on the Exmouth Plateau, which went largely unnoticed in previous examinations of the ODP material, but had been recorded previously elsewhere on the northwestern margin. The duration of the disconformity in the Vulcan Sub-basin is unclear, since intervals of the succession may be condensed in this area.


ISSN: 0262-821X
EISSN: 2041-4978
Serial Title: Journal of Micropalaeontology
Serial Volume: 22, Part 1
Title: Integrated uppermost Campanian-Maastrichtian calcareous nannofossil and foraminiferal biostratigraphic zonation of the northwestern margin of Australia
Affiliation: University of Western Australia, School of Earth & Geographical Sciences, Crawley, West. Aust., Australia
Pages: 29-62
Published: 200307
Text Language: English
Publisher: British Micropalaeontological Society, London, United Kingdom
References: 105
Accession Number: 2004-059791
Categories: Stratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Annotation: Includes appendices
Illustration Description: illus. incl. 7 plates, 3 tables, strat. cols., geol. sketch maps
S16°44'14" - S16°44'13", E115°32'06" - E115°32'06"
S19°53'15" - S19°53'14", E112°15'14" - E112°15'15"
S13°00'00" - S12°00'00", E124°00'00" - E125°00'00"
Secondary Affiliation: International Stratigraphic Consultants, AUS, Australia
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 200418
Program Name: ODPOcean Drilling Program
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