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Austrochlamys heardensis (Fleming, 1957) (Bivalvia: Pectinidae) from Central Kerguelen Plateau, Indian Ocean: palaeontology and possible tectonic significance

Citation

Quilty, PG and Murray-Wallace, CV and Whitehead, JM, Austrochlamys heardensis (Fleming, 1957) (Bivalvia: Pectinidae) from Central Kerguelen Plateau, Indian Ocean: palaeontology and possible tectonic significance, Antarctic Science, 16, (3) pp. 329-338. ISSN 0954-1020 (2004) [Refereed Article]

DOI: doi:10.1017/S0954102004002160

Abstract

Austrochlamys heardensis (Fleming) is recorded from a boulder of Late Pliocene (3.62-2.5 Ma) volcaniclastic sandstone dredged 70 km east-north-east of Heard Island, the third record of the species. The collection is much larger than the original described by Fleming and includes left valves which are described for the first time. The species is compared with A. anderssoni (Hennig) from Cockburn Island and 'Chlamys' mawsoni Fletcher from Îles Kerguelen. The source rock accumulated in fully marine, highly current-affected conditions. The collection is dominated by right valves, possibly because left valves are more susceptible to breakage and the effects of current winnowing. The locality may have subsided some 500 m since deposition. It lies immediately north of a straight, north-east - south-west trending lineament which may mark a major tectonic feature with left-lateral displacement of approximately 50 km, and provides a natural boundary within the Central Province of Kerguelen Plateau.

Item Details

Item Type:Refereed Article
Research Division:Earth Sciences
Research Group:Geology
Research Field:Stratigraphy (incl. Biostratigraphy and Sequence Stratigraphy)
Objective Division:Environment
Objective Group:Climate and Climate Change
Objective Field:Climate Variability (excl. Social Impacts)
Author:Quilty, PG (Dr Pat Quilty)
Author:Whitehead, JM (Dr Jason Whitehead)
ID Code:32335
Year Published:2004
Web of Science® Times Cited:7
Deposited By:IASOS
Deposited On:2004-08-01
Last Modified:2005-06-22
Downloads:0

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