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Taphonomy of Ediacaran acritarchs from Australia; significance for taxonomy and biostratigraphy

Kathleen Grey and Sebastian Willman
Taphonomy of Ediacaran acritarchs from Australia; significance for taxonomy and biostratigraphy
Palaios (April 2009) 24 (4): 239-256

Abstract

A diverse assemblage of Australian Ediacaran (late Neoproterozoic) acritarchs from the Centralian Superbasin and Adelaide Rift Complex demonstrates a range of taphonomic degradation. Recognition of taphonomic variants is critical for taxonomic studies and biostratigraphic interpretation. Taphonomic features observed include compression features, folding and tearing of vesicle walls, pitting, perforation, abrasion, exfoliation, shrinking, twisting, splitting, curling, shredding, pyritization, particle entrapment, and thermal maturation effects. The physical and chemical structure of the vesicle wall is instrumental in determining the degree of taphonomic damage. Consistent associations allow identification of degradation series that incorporate previously described individual species and provide a framework for taxonomic revision. Taphonomic associations may also characterize taphofacies, providing an additional tool for basin analysis.


ISSN: 0883-1351
Serial Title: Palaios
Serial Volume: 24
Serial Issue: 4
Title: Taphonomy of Ediacaran acritarchs from Australia; significance for taxonomy and biostratigraphy
Affiliation: Geological Survey of Western Australia, Department of Mines and Petroleum, East Perth, West. Aust., Australia
Pages: 239-256
Published: 200904
Text Language: English
Publisher: Society for Sedimentary Geology, Tulsa, OK, United States
References: 69
Accession Number: 2009-038477
Categories: PaleobotanyStratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables, geol. sketch map
S31°00'00" - S30°00'00", E136°00'00" - E137°00'00"
S30°00'00" - S27°00'00", E130°00'00" - E133°00'00"
S25°00'00" - S24°00'00", E133°00'00" - E134°00'00"
Secondary Affiliation: Uppsala University, SWE, Sweden
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data supplied by SEPM (Society for Sedimentary Geology), Tulsa, OK, United States
Update Code: 200921
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