Palynological evidence for the age of the Brewer Conglomerate, Amadeus Basin, central Australia

Playford, G., Jones, B. G. and Kemp, E. M. (1976) Palynological evidence for the age of the Brewer Conglomerate, Amadeus Basin, central Australia. Alcheringa, 1 2: 235-243. doi:10.1080/03115517608619073


Author Playford, G.
Jones, B. G.
Kemp, E. M.
Title Palynological evidence for the age of the Brewer Conglomerate, Amadeus Basin, central Australia
Journal name Alcheringa   Check publisher's open access policy
ISSN 1752-0754
0311-5518
Publication date 1976-01-01
Sub-type Article (original research)
DOI 10.1080/03115517608619073
Open Access Status
Volume 1
Issue 2
Start page 235
End page 243
Total pages 9
Place of publication London
Publisher Taylor and Francis
Language eng
Subject 0403 Geology
Abstract An assemblage of spores recovered from the Undandita Member of the Brewer Conglomerate, the uppermost unit of the Pertnjara Group in the Amadeus Basin of central Australia, establishes the age of that formation as Late Devonian. Comparison with spore assemblages from sedimentary basins in Western Australia indicates that the central Australian assemblage is dateable within the post-early Frasnian to pre-late Famennian interval. Fish remains and spores previously described from the Parke Siltstone at the base of the Pertnjara Group are of probable early Frasnian age, so it now appears that the entire group was deposited during the Late Devonian. The Brewer Conglomerate is of synorogenic origin, and was deposited during uplift associated with the Alice Springs Orogeny; the spore data thus indicate that this tectonic event began in the Late Devonian. Isotopic age determinations in the Arltunga Nappe Complex and the Strangways Range of the Arunta Block have yielded Early Carboniferous dates. These possibly reflect a later stage of deformation than that which was responsible for the deformation and folding of the Brewer Conglomerate.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Physical Sciences Publications
 
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