2012. "Bass 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 Bass Basin is a northwest-trending, intra- cratonic rift basin that underlies the Bass Strait region beffveen northern Tasmania and southern Victoria (Figure 8). The basin covers an area of approximately 42,000 km2 (16, 216 mi2), and is sepa-rated from the Offvay Basin to the west and northwest by the King Island High, and from the Gippsland Basin to the northeast by Flinders Island and the Bassian Rise. The orientation of rift-related extensional stresses in the Bass Basin has been proposed as north-northeast, resulting in a series of west to northwest-striking basement-controlled normal faults offset along strike by northeast-trending accommodation zones (Etheridge et al., 1985; Young et al., 1991; Gunn et al., 1996; Lennon et al., 1999).
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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.