Please use this identifier to cite or link to this item: https://une.intersearch.com.au/unejspui/handle/1959.11/1877
Title: Colour and textural alteration of Palaeozoic and Triassic conodonts from Peninsular Malaysia: implications for tectonic evolution and hydrocarbon generation
Contributor(s): Metcalfe, Ian (author)
Publication Date: 2003
Handle Link: https://hdl.handle.net/1959.11/1877
Abstract: Colour alteration indices (CAIs) of conodonts in Peninsular Malaysia range in value from 1.5 to 8. The lowestvalues are found in Triassic Limestones in northwest Peninsular Malaysia and the highest values occur in Palaeozoicstrata within or close to zones of deformation or to intrusives. Palaeozoic conodonts from the SibumasuBlock (Western Belt of Peninsular Malaysia) show how a background value of CAI 5; all conodonts of Ordovicianto Middle Permian age have CAIs of at least 5 and locally up to 8. Palaeozoic conodonts of Sibumasu exhibittextural alteration interpreted as the result of regional metamorphism, whereas Triassic conodonts exhibit littletextural alteration. The disparity between CAIs and textural alteration of Palaeozoic vs Triassic conodonts ofSibumasu suggests regional metamorphism of these rocks around the Palaozoic-Mesozoic boundary, whichis consistent with the previously suggested time for the initial collision between the Sibumasu and Indochinablocks. Upper Palaeozoic conodonts from the Indochina Block (Central and Eastern Belts), however, are morevariable. Upper Lower Carboniferous (Namurian) conodonts from the Panching Limestone in the Eastern Beltexhibit a CAI of 3 and appear to have escaped the effects of the regional metamorphism that affected the coevalrocks on the Sibumasu Block. Permian conodonts from limestones along the western margin of the Central Belthave an anomalously high CAI of 5, probably caused by the healing effect of the Main Range granitoids.
Publication Type: Journal Article
Source of Publication: Courier Forschungsinstitut Senckenberg, v.245, p. 261-270
Publisher: E. Schweizerbart'sche Verlagsbuchhandlung
Place of Publication: Frankfurt am Main
ISSN: 0341-4116
Field of Research (FOR): 040308 Palaeontology (incl Palynology)
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
Other Links: http://nla.gov.au/anbd.bib-an3775122
http://www.schweizerbart.de/pubs/isbn/sng/cfs-courie-3510613627-desc.html
Statistics to Oct 2018: Visitors: 111
Views: 114
Downloads: 0
Appears in Collections:Journal Article

Files in This Item:
2 files
File Description SizeFormat 
Show full item record

Page view(s)

70
checked on Jan 12, 2019
Google Media

Google ScholarTM

Check

SCOPUSTM   
Citations

 

Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.