The impetus for a volume on Cenozoic Carbonate Systems of Australasia began with oral and poster presentations in SEPM (Society for Sedimentary Geology) and AAPG (American Association of Petroleum Geologists) sessions held at the AAPG International Meeting in Perth, Australia, in November 2006. Those sessions highlighted the diversity of carbonate systems that are and were present in Australasia during the Cenozoic. The papers in this volume, which are drawn from the presentations made at the Perth meeting as well as from a 2009 AAPG Hedberg Conference and other meetings, provide insights into the factors controlling the diverse lithofacies, biofacies, growth morphology, diagenesis, and hydrocarbon reservoir potential of these systems.
The ten papers in this Special Publication are geographically widespread (Fig. 1) and include tropical and cool-water carbonates. They are grouped into sections on Southeast Asian and Australian Region carbonate systems. This overview begins with a brief description of each of the papers, followed by summary sections on the influence of tectonics on the initiation, growth, and demise of carbonate systems, and insights into controls on potential hydrocarbon reservoirs.
Moyra E. J. Wilson and Robert Hall review the role of tectonics on SE Asian carbonate platform evolution, from plate to local fault scales, and its relationship to reservoir development in their paper on Tectonic Influences on SE Asian Carbonate Systems and their Reservoir Development. At the largest scale, this review highlights the importance of carbonate platforms as records of the Cenozoic tectonic evolution and assembly of SE
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The Cenozoic carbonate systems of Australasia are the product of a diverse assortment of depositional and post-depositional processes, reflecting the interplay of eustasy, tectonics (both plate and local scale), climate, and evolutionary trends that influenced their initiation and development. These systems, which comprise both land-attached and isolated platforms, were initiated in a wide variety of tectonic settings (including rift, pas-sive margin, and arc-related) and under warm and cool-water conditions where, locally, siliciclastic input af-fected their development. The lithofacies, biofacies, growth morphology, diagenesis, and hydrocarbon reser-voir potential of these systems are products of these varying influences. The studies reported in this volume range from syntheses of tectonic and depositional factors influencing carbonate deposition and controls on reservoir formation and petroleum system development, to local studies from the South China Sea, Indonesia, Kalimantan, Malaysia, the Marion Plateau, the Philippines, Western Australia, and New Caledonia that incor-porate outcrop and subsurface data, including 3-D seismic imaging of carbonate platforms and facies, to un-derstand the interplay of factors affecting the development of these systems under widely differing circum-stances. This volume will be of importance to geoscientists interested in the variability of Cenozoic carbonate systems and the factors that controlled their formation, and to those wanting to understand the range of po-tential hydrocarbon reservoirs discovered in these carbonates and the events that led to favorable reservoir and trap development.