Platform margins, reef facies, and microbial carbonates; a comparison of Devonian reef complexes in the Canning Basin, Western Australia, and the Guilin region, South China

Shen, J-W., Webb, G.E. and Jell, John S. (2008) Platform margins, reef facies, and microbial carbonates; a comparison of Devonian reef complexes in the Canning Basin, Western Australia, and the Guilin region, South China. Earth Science Reviews, 88 1-2: 33-59. doi:10.1016/j.earscirev.2008.01.002


Author Shen, J-W.
Webb, G.E.
Jell, John S.
Title Platform margins, reef facies, and microbial carbonates; a comparison of Devonian reef complexes in the Canning Basin, Western Australia, and the Guilin region, South China
Journal name Earth Science Reviews   Check publisher's open access policy
ISSN 0012-8252
Publication date 2008-02-04
Year available 2008
Sub-type Critical review of research, literature review, critical commentary
DOI 10.1016/j.earscirev.2008.01.002
Open Access Status
Volume 88
Issue 1-2
Start page 33
End page 59
Total pages 27
Place of publication Netherlands
Publisher Elsevier BV
Language eng
Subject C1
850103 Oil and Gas Exploration
040310 Sedimentology
Abstract Devonian reef complexes were well developed in Western Australia and South China, but no detailed direct comparison has been made between reef building in the two regions. The regions differ in several respects, including tectonic, stratigraphic and palaeoceanographic–palaeogeographic settings, and the reef building styles reflect minor differences in reef builders and reef facies. Similarities and differences between the two reef complexes provide insights into the characteristics of platform margins, reef facies and microbial carbonates of both regions. Here we present a comparison of platform margin types from different stratigraphic positions in the Late Devonian reef complex of the Canning Basin, Western Australia and Middle and Late Devonian margin to marginal slope successions in Guilin, South China. Comparisons are integrated into a review of the reefal stratigraphy of both regions. Reef facies, reef complex architecture, temporal reef builder associations, 2nd order stratigraphy and platform cyclicity in the two regions were generally similar where the successions overlap temporally. However, carbonate deposition began earlier in South China. Carbonate complexes were also more widespread in South China and represent a thicker succession overall. Platforms in the Canning Basin grew directly on Precambrian crystalline basement or early Palaeozoic sedimentary rocks, but in South China, carbonate complexes developed conformably on older Devonian siliciclastic strata. Pre-Frasnian reef facies in South China had more abundant skeletal frameworks than in Canning Basin reefs of equivalent age, and Famennian shoaling margins containing various microbial reefs may have been more common and probably more diverse in South China. However, Late Devonian platform margin types have been documented more completely in the Canning Basin. Deep intra-platform troughs (deep depressions containing non-carbonate pelagic sediments — Nandan-type successions) that developed along syndepositional faults characterize Devonian carbonate platforms in South China, but have no equivalent on the Lennard Shelf, Canning Basin where inter-reef areas were more shallow. The South China platform-to-depression pattern was generally continuous from the Lower to Upper Devonian, indicating that many pre-Devonian tectonic features continued to exercise considerable effect through deposition. Localized, fault-controlled subsidence was an important factor in both regions, but similarities in 2nd order aggradation–progradation cycles suggest that eustasy was also an important control on the larger scale stratigraphic development of both regions.
Keyword reef complexes
Devonian
Canning Basin
Western Australia
Guilin
South China
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Note that this record should replace PID UQ:176690. Sorry for this duplication.

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collections: 2009 Higher Education Research Data Collection
School of Earth Sciences Publications
 
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Created: Sun, 19 Apr 2009, 02:20:30 EST by Ms Christine Sinclair on behalf of School of Earth Sciences