Product Specifications Coverage: Partial coverage, predominantly in northern Australia, along major transport routes, and other selected areas. About 1000 maps have been published to date. Currency: Ranges from 1968 to 2006. Coordinates: Geographical and UTM. Datum: AGD66, new edition WGS84; AHD. Projection: Universal Transverse Mercator UTM. Medium: Paper, flat copies only.

Product Specifications Coverage: Partial coverage, predominantly in northern Australia, along major transport routes, and other selected areas. About 1000 maps have been published to date. Currency: Ranges from 1968 to 2006. Coordinates: Geographical and UTM. Datum: AGD66, new edition WGS84; AHD. Projection: Universal Transverse Mercator UTM. Medium: Paper, flat copies only.

Product Specifications Coverage: Partial coverage, predominantly in northern Australia, along major transport routes, and other selected areas. About 1000 maps have been published to date. Currency: Ranges from 1968 to 2006. Coordinates: Geographical and UTM. Datum: AGD66, new edition WGS84; AHD. Projection: Universal Transverse Mercator UTM. Medium: Paper, flat copies only.

Product Specifications Coverage: Partial coverage, predominantly in northern Australia, along major transport routes, and other selected areas. About 1000 maps have been published to date. Currency: Ranges from 1968 to 2006. Coordinates: Geographical and UTM. Datum: AGD66, new edition WGS84; AHD. Projection: Universal Transverse Mercator UTM. Medium: Paper, flat copies only.

This review collates, summarises and assesses the published geophysical studies in the Otway and Sorell Basins, with particular emphasis on studies of the underlying basement and crustal structure of the basins. Land based deep seismic data and airborne magnetic data were acquired over the onshore Otway Basin, by Geoscience Australia in the early to mid 1990's as part of the National Geoscience Mapping Agreement (NGMA). These data are used by most of the studies reviewed. In the late 1990's Geoscience Australia acquired marine seismic, swath, gravity and magnetic data over the South Tasman Rise and off the west coast of Tasmania. The papers reviewed had a wide range of styles and approaches. Some of the papers showed a trend towards model driven geology, where geologists make simplistic map based 2D and often-incorrect interpretations of the potential field data to develop models. In these papers, the potential field data were examined for linear features that aligned with the direction of the model. The linear features were then interpreted in a regional context without further geophysical analysis of the potential field data. In some cases artifacts, created by the gridding process, were interpreted as geological features. The geophysical studies reviewed cover most of the onshore Otway Basin, but the offshore basin is poorly represented in these works. The studies show that the Otway Basin has a complex basement structure, but in some instances do not identify the major structural features that controlled basin development. The signatures of these features are present in the data; however they were not recognised at the time of these studies. A basin-wide integrated approach to the interpretation of potential field and deep seismic data would provide a good framework to improve understanding of these basins as a whole. The crustal and basement structure underlying the Otway, Sorell and Bass Basins is not fully understood. This is demonstrated by the diversity of interpretations and models presented in the three most recent papers on this subject (Miller et al. 2002, Bernecker and Moore 2003, Teasdale et al. 2003). Based on the evidence presented by the authors Miller et al. (2002) present the most plausible interpretation. These papers highlight the need for a rigorous interpretation of the combined geophysical data (seismic, gravity and magnetic data) to determine limits on the geological models for this area. The development of the Otway and Sorell basins can not be understood in isolation and should be studied in the context of south east of Australia. In particular, these studies should address: * the structural relationship between Tasmania, mainland Victoria and the intervening Bass Basin; * the movement history of the Western-South Tasman Rise; * the Palaeozoic Moyston Fault, its role as a crustal boundary and its interaction with the Shipwreck Trough; * the western boundary of the Otway Basin and its relationship to the Spencer Fracture Zone; and, * the Proterozoic - Palaeozoic boundary in southern Australia. These issues are all important aspects in understanding the structural development of these basins. Particular emphasis is needed to extract the structural information from the geophysical data in the offshore sections of the basins.

A preliminary assessment of the petroleum potential of Australia's offshore central eastern margin, between Cape Howe and the southern boundary of the Great Barrier Reef Marine Park.

The Tarcoola Goldfield is one of several districts included in the recently-proposed central Gawler gold province.

Product Specifications Coverage: Partial coverage, predominantly in northern Australia, along major transport routes, and other selected areas. About 1000 maps have been published to date. Currency: Ranges from 1968 to 2006. Coordinates: Geographical and UTM. Datum: AGD66, new edition WGS84; AHD. Projection: Universal Transverse Mercator UTM. Medium: Paper, flat copies only.

Product Specifications Coverage: Partial coverage, predominantly in northern Australia, along major transport routes, and other selected areas. About 1000 maps have been published to date. Currency: Ranges from 1968 to 2006. Coordinates: Geographical and UTM. Datum: AGD66, new edition WGS84; AHD. Projection: Universal Transverse Mercator UTM. Medium: Paper, flat copies only.

Product Specifications Coverage: Partial coverage, predominantly in northern Australia, along major transport routes, and other selected areas. About 1000 maps have been published to date. Currency: Ranges from 1968 to 2006. Coordinates: Geographical and UTM. Datum: AGD66, new edition WGS84; AHD. Projection: Universal Transverse Mercator UTM. Medium: Paper, flat copies only.