Bowen and Surat Basin
2012. "Bowen and Surat Basin", Atlas of Australian and New Zealand Hydrocarbon Seals: Worldwide Analogs for Cap Rocks and Intraformational Barriers in Clastic Depositional Settings, Richard (Ric) Daniel, John Kaldi
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The foreland, Early Permian to Middle Triassic Bowen Basin of eastern Queensland occupies about 160,000 km2 (61,766 mi2), the southern half of which is covered by the Surat Basin (Figure 10). It has a maximum sediment thickness of about 10,000 m (32,808 ft) concentrated in two north-trending dep- ocenters, the Taroom trough to the east and the Denison trough to the west (Elliott, 1989). Deposition in the basin commenced during an Early Permian exten- sional phase, with fluvial and lacustrine sediments and volcanics being deposited in a series of half grabens in the east, while in the west a thick succession of coals and nonmarine clastics were being deposited (Cadman et al., 1998). Following rifting, a thermal subsidence phase extended from the middle Early to Late Permian, during which a basinwide transgression allowed deposition of deltaic and shallow-marine, predominantly clastic sediments as well as extensive coal mea sures. Foreland loading of the basin spread from east to west during the Late Permian, resulting in accelerated subsidence, which allowed the deposition of a very thick succession of Upper Permian marine and fluvial clastics, again with coal and Lower to Middle Triassic fluvial and lacustrine clastics. Sedimentation in the basin was terminated by Middle to Late Triassic contraction (Elliott, 1989).
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Atlas of Australian and New Zealand Hydrocarbon Seals: Worldwide Analogs for Cap Rocks and Intraformational Barriers in Clastic Depositional Settings
The purpose of this Seals Atlas is to present the microstructural, petrophysical, and geomechanical properties of selected examples of cap rocks and fault seals for use as analogs in the prediction of seal capacity or containment potential. Similar atlases exist; however, this is the first such atlas to focus specifically on the characteristics of cap rocks. The atlas is primarily based on extensive mercury injection capillary pressure (MICP) analyses, but also includes thin section, XRD, grainsize distribution, SEM/EDS, and 'V shale' data. The samples included in this atlas are a result of APCRC and CO2CRC (Cooperative Research Centres) research programs focusing on top and intraformational seals and some fault seals (cataclasites) throughout Australia and New Zealand. The hydrocarbon/carbon dioxide seal examples are grouped by basin localities and further distinguished by formation, well, then depth. Where multiple examples are available, a range of lithologies and MICP data are included in the sample selection. This atlas also can be used in an evaluation of integrated seal potential for prospect risking and reservoir management.