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INTEGRATED STRATIGRAPHIC CORRELATION OF UPPER DEVONIAN PLATFORM-TO-BASIN CARBONATE SEQUENCES, LENNARD SHELF, CANNING BASIN, WESTERN AUSTRALIA: ADVANCES IN CARBONATE MARGIN-TO-SLOPE SEQUENCE STRATIGRAPHY AND STACKING PATTERNS

By
Ted E. Playton
Ted E. Playton
Tengizchevroil, Atyrau 060011, Kazakhstan (research conducted while at Chevron Energy Technology Company, Houston, Texas, USA)
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Roger M. Hocking
Roger M. Hocking
Geological Survey of Western Australia, Perth WA 6004, Australia
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Eric Tohver
Eric Tohver
University of Western Australia, Perth WA 6009, Australia
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Kelly Hillbun
Kelly Hillbun
University of Washington, Seattle, Washington 98195, USA
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Peter W. Haines
Peter W. Haines
Geological Survey of Western Australia, Perth WA 6004, Australia
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Kate Trinajstic
Kate Trinajstic
Curtin University, Perth WA 6845, Australia
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Brett Roelofs
Brett Roelofs
Curtin University, Perth WA 6845, Australia
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David A. Katz
David A. Katz
Whiting Petroleum, Denver, Colorado 80290, USA
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Joseph L. Kirschvink
Joseph L. Kirschvink
California Institute of Technology, Pasadena, California 91125, USA
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Kliti Grice
Kliti Grice
Curtin University, Perth WA 6845, Australia
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Paul Montgomery
Paul Montgomery
Chevron Energy Technology Company, Houston, Texas 77002, USA
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Jeroen Hansma
Jeroen Hansma
University of Western Australia, Perth WA 6009, Australia
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Maodu Yan
Maodu Yan
Institute for Tibetan Plateau Research, Beijing 100101, China
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Sergei Pisarevsky
Sergei Pisarevsky
University of Western Australia, Perth WA 6009, Australia
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Svenja Tulipani
Svenja Tulipani
Curtin University, Perth WA 6845, Australia
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Ken Ratcliffe
Ken Ratcliffe
Chemostrat Ltd., Welshpool SY21 8SL, UK
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Samuel Caulfield-Kerney
Samuel Caulfield-Kerney
University of Greenwich, Kent ME4 4TB, UK
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David Wray
David Wray
University of Greenwich, Kent ME4 4TB, UK
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Published:
January 01, 2017

Abstract:

High-resolution, time-significant correlations are integral to meaningful stratigraphic frameworks in depositional systems but may be difficult to achieve using traditional sequence stratigraphic or biostratigraphic approaches alone, particularly in geologically complex settings. In steep, reefal carbonate margin-to-slope systems, such correlations are essential to unravel shelf-to-basin transitions, characterize strike variability, and develop predictive sequence stratigraphic models—concepts that are currently poorly understood in these heterogeneous settings. The Canning Basin Chronostratigraphy Project integrates multiple independent data sets (including biostratigraphy, magnetostratigraphy, stable isotope chemostratigraphy, and sequence stratigraphy) extracted from Upper Devonian (Frasnian and Famennian) reefal platform exposures along the Lennard Shelf, Canning Basin, Western Australia. These were used to generate a well-constrained stratigraphic framework and shelf-to-basin composite reconstruction of the carbonate system.

The resultant integrated framework allows for unprecedented analysis of carbonate margin-to-slope heterogeneity, depositional architecture, and sequence stratigraphy along the Lennard Shelf. Systems tract architecture, facies partitioning, and stacking patterns of margin to lower-slope environments were assessed for six composite-scale sequences that form part of a transgressive-to-regressive supersequence and span the Frasnian–Famennian (F–F) biotic crisis. Variations are apparent in margin styles, foreslope facies proportions, dominant resedimentation processes, downslope contributing sediment factories, and vertical rock successions, related to hierarchical accommodation signals and ecological changes associated with the F–F boundary. We present these results in the form of carbonate margin-to-basin sequence stratigraphic models and associations that link seismic-scale architecture to fine-scale facies heterogeneity. These models provide a predictive foundation for characterization of steep-sided flanks of reefal carbonate platform systems that is useful for both industry and academia. This study emphasizes the utility of an integrated stratigraphic approach and the insights gained from better-constrained facies and stratal architecture analysis, insights that were not achievable with traditional sequence stratigraphic or biostratigraphic techniques alone.

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Contents

Society for Sedimentary Geology

NEWADVANCES IN DEVONIAN CARBONATES: OUTCROP ANALOGS, RESERVOIRS AND CHRONOSTRATIGRAPHY

Society for Sedimentary Geology
Volume
107
ISBN electronic:
9781565763456
Publication date:
January 01, 2017

GeoRef

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