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  • Crustal dynamics throughout geological history have played an important role in the development of sedimentary basins. A basic knowledge of major crustal structures is, therefore, crucial to any interpretations aimed at modelling particular basin systems. This Bulletin contains papers by authors from a number of geoscience institutions and companies on various aspects of crustal and basin development along an 1100 km east-west transect in southern Queensland, the Eromanga-Brisbane Geoscience Transect In particular, deep seismic profiling along this transect has enabled, for the first time, a 3-dimensional interpretation of deep structures and processes which have controlled the development of major basin systems in eastern Australia. Complete answers to all questions on basin development are still evolving, but the papers presented in this Bulletin, together with the 1:1 000 000 scale map folio, provide a much improved basis for further, detailed investigations. The Eromanga-Brisbane Geoscience Transect crosses three major basement provinces in eastern Australia: 1) the Thomson Fold Belt under the central Eromanga Basin and its infra-basins, 2) the northernmost Lachlan Fold Belt under the Taroom Trough of the Bowen Basin and Surat Basin, and 3) the New England Fold Belt under the Clarence-Moreton Basin. Basement geology in this region has, until now, been only poorly understood because it is largely obscured by the Mesozoic cover rocks of the Eromanga, Surat and Clarence-Moreton Basins. However, the application of geophysical techniques (seismic methods in particular) in recent years has enabled a much better understanding of the crustal architecture and processes likely to have been involved in the development of the major basins. Such an understanding provides the framework for more detailed investigations directed primarily at economic resources of oil, gas, coal, groundwater and many minerals.The precis paper at the end of this Bulletin should be consulted for a summary of geoscience results. It is evident from these results that the transect interpretation has now firmly established concepts of crustal-scale ramp structures, multiple intra-crustal detachment surfaces, strike-slip fault architecture, lower crustal magmatism/underplating, Moho remobilisation, and intra-crustal terranes into the geological reconstructions of southern Queensland. In so doing, it has played a major role in developing a better understanding of the sedimentary basins of eastern Australia.

  • No abstract available

  • This 'basement' geology interpretation drew extensively on published 1:100 000, 1:250 000 and smaller scale regional geological maps and analysis of grids of regional aeromagnetic data with line spacings between 100m and 1.5km from Geoscience Australia's aeromagnetic database. Bouguer Gravity and bore hole data were also used to complement the interpretation. Flat lying Cenozoic and Mesozoic cover materials have been removed across the map area; and Paleozoic sediments have also been removed in the Mount Isa area in the west (north of the Diamantina Fault or northwest of the Thomson Fold Belt). The digital data that accompanied this map contains lithostratigraphic units compiled at 1:1 000 000 scale. The approximate 900 mapped units are described in the Australian Stratigraphic Units Database housed in Geosciences Australia in Canberra. The hard copy map presented here is simplified from the digital data to show the distribution of major lithology groups of different ages. The user is encouraged to use the digital data for more information. Geological interpretation and compilation by S.F. Liu (Geoscience Australia), 2007-2008, with contributions from I.W. Withnall, L.J.Hutton (Geological Survey of Queensland), D. Champion, G.Gibson, and D.Huston (Geoscience Australia). Related Products <a href="https://www.ga.gov.au/products/servlet/controller?event=GEOCAT_DETAILS&catno=65992">Basement Geology of Northern Queensland GIS Dataset</a>

  • This is part of a series of 49 maps covering the whole of Australia and forms part of the International Map of the World map series. At this scale 1 centimetre on the map represents 10 kilometres on the ground. Each map covers an area of six degrees of longitude and four degrees of latitude. The maps show roads, railways, hydrography, larger nature conservation reserves, outback homesteads. Seabed and land relief is shown by layer tints, spot heights and contours in metres. Contour interval is 500 metres, with an additional contour at 200 metres. Product Specifications Coverage: Whole of Australia covered with 49 maps. National coverage first completed in 1975. Currency: Ranges from 1971 to 1983. Average 1976. Coordinates: Geographical. Datum: AGD66 (GDA94 compliant at this scale); AHD. Projection: Lambert Conformal Conic. Medium: Paper map, flat and folded. Status: These maps are no longer maintained. It is planned to produce a new series of maps from the converted 42 World Aeronautical Charts (WAC) series of maps produced in 2006. These maps are only available as a print on demand product. This map can be purchased in either flat or folded format.

  • This is part of a series of 49 maps covering the whole of Australia and forms part of the International Map of the World map series. At this scale 1 centimetre on the map represents 10 kilometres on the ground. Each map covers an area of six degrees of longitude and four degrees of latitude. The maps show roads, railways, hydrography, larger nature conservation reserves, outback homesteads. Seabed and land relief is shown by layer tints, spot heights and contours in metres. Contour interval is 500 metres, with an additional contour at 200 metres. Product Specifications Coverage: Whole of Australia covered with 49 maps. National coverage first completed in 1975. Currency: Ranges from 1971 to 1983. Average 1976. Coordinates: Geographical. Datum: AGD66 (GDA94 compliant at this scale); AHD. Projection: Lambert Conformal Conic. Medium: Paper map, flat and folded. Status: These maps are no longer maintained. It is planned to produce a new series of maps from the converted 42 World Aeronautical Charts (WAC) series of maps produced in 2006. These maps are only available as a print on demand product. This map can be purchased in either flat or folded format.

  • This is part of a series of 49 maps covering the whole of Australia and forms part of the International Map of the World map series. At this scale 1 centimetre on the map represents 10 kilometres on the ground. Each map covers an area of six degrees of longitude and four degrees of latitude. The maps show roads, railways, hydrography, larger nature conservation reserves, outback homesteads. Seabed and land relief is shown by layer tints, spot heights and contours in metres. Contour interval is 500 metres, with an additional contour at 200 metres. Product Specifications Coverage: Whole of Australia covered with 49 maps. National coverage first completed in 1975. Currency: Ranges from 1971 to 1983. Average 1976. Coordinates: Geographical. Datum: AGD66 (GDA94 compliant at this scale); AHD. Projection: Lambert Conformal Conic. Medium: Paper map, flat and folded. Status: These maps are no longer maintained. It is planned to produce a new series of maps from the converted 42 World Aeronautical Charts (WAC) series of maps produced in 2006. These maps are only available as a print on demand product. This map can be purchased in either flat or folded format.

  • This is part of a series of 49 maps covering the whole of Australia and forms part of the International Map of the World map series. At this scale 1 centimetre on the map represents 10 kilometres on the ground. Each map covers an area of six degrees of longitude and four degrees of latitude. The maps show roads, railways, hydrography, larger nature conservation reserves, outback homesteads. Seabed and land relief is shown by layer tints, spot heights and contours in metres. Contour interval is 500 metres, with an additional contour at 200 metres. Product Specifications Coverage: Whole of Australia covered with 49 maps. National coverage first completed in 1975. Currency: Ranges from 1971 to 1983. Average 1976. Coordinates: Geographical. Datum: AGD66 (GDA94 compliant at this scale); AHD. Projection: Lambert Conformal Conic. Medium: Paper map, flat and folded. Status: These maps are no longer maintained. It is planned to produce a new series of maps from the converted 42 World Aeronautical Charts (WAC) series of maps produced in 2006. These maps are only available as a print on demand product. This map can be purchased in either flat or folded format.

  • The surface geology of Queensland ranges in age from Palaeoproterozoic to Recent. The oldest rocks largely occur in the Mount Isa and Georgetown Inliers in the northwest and central north of the state respectively. These rocks have undergone greenschist to amphibolite facies metamorphism and were extensively intruded by granite during the Mesoproterozoic. Metamorphics of Meso to Neoproterozoic age occur in the Coen Inlier in eastern Cape York, in the Hughenden-Charters Towers-Townsville region to the south and east of Georgetown, and also further south in the Anakie Inlier. During Cambrian to Ordovician times, extensive carbonate dominated, marine sedimentation took place in the Georgina Basin, West and southwest of Mount Isa. These rocks were subsequently faulted and gently folded prior to the Devonian, perhaps during the mid-Ordovician Thompson Orogeny. Silurian to Devonian marine sedimentation is preserved in the Hodgkinson and Broken River Basins in the north east of the state while similar aged, arc related deposits accumulated in the New England Orogen which occupies a 200 km wide coastal strip between Bowen and Brisbane in the southeast of the State. The Hodgkinson - Georgetown region and New England Orogen were extensively intruded by granite during Carboniferous to Permian times. Permian to Triassic sediments of the Galilee and Bowen Basins outcrop in the central east of the state while similar aged sediments accumulated to the east and southeast within the New England Orogen. Widespread sedimentation during the Jurassic to Cretaceous (Carpentaria, Eromanga, Mulgildie, Surat, and Laura Basins) blanketed large areas of older bedrock, particularly in the central, southern and south western parts of the state. Finally, Cainozoic cover units comprise approximately half the surface geology with sand plain (Czs), sand plain with dunes (Czd), colluvium (Qrc), alluvium (Qa), and Tertiary to Quaternary basalt flows comprising the major components. The data set was initially compiled from older regional data sets including those covering the Eromanga, Surat and Carpentaria-Karumba Basins. Extensive areas were recompiled using more recent 1:250 000 and 1:100 000 scale mapping, particularly in the Georgetown-Charters Towers-Ebagoola region, and also the area of the New England Orogen. The data set includes nearly 1800 named, informal or unnamed units.

  • This is part of a series of 49 maps covering the whole of Australia and forms part of the International Map of the World map series. At this scale 1 centimetre on the map represents 10 kilometres on the ground. Each map covers an area of six degrees of longitude and four degrees of latitude. The maps show roads, railways, hydrography, larger nature conservation reserves, outback homesteads. Seabed and land relief is shown by layer tints, spot heights and contours in metres. Contour interval is 500 metres, with an additional contour at 200 metres. Product Specifications Coverage: Whole of Australia covered with 49 maps. National coverage first completed in 1975. Currency: Ranges from 1971 to 1983. Average 1976. Coordinates: Geographical. Datum: AGD66 (GDA94 compliant at this scale); AHD. Projection: Lambert Conformal Conic. Medium: Paper map, flat and folded. Status: These maps are no longer maintained. It is planned to produce a new series of maps from the converted 42 World Aeronautical Charts (WAC) series of maps produced in 2006. These maps are only available as a print on demand product. This map can be purchased in either flat or folded format.

  • This is part of a series of 49 maps covering the whole of Australia and forms part of the International Map of the World map series. At this scale 1 centimetre on the map represents 10 kilometres on the ground. Each map covers an area of six degrees of longitude and four degrees of latitude. The maps show roads, railways, hydrography, larger nature conservation reserves, outback homesteads. Seabed and land relief is shown by layer tints, spot heights and contours in metres. Contour interval is 500 metres, with an additional contour at 200 metres. Product Specifications Coverage: Whole of Australia covered with 49 maps. National coverage first completed in 1975. Currency: Ranges from 1971 to 1983. Average 1976. Coordinates: Geographical. Datum: AGD66 (GDA94 compliant at this scale); AHD. Projection: Lambert Conformal Conic. Medium: Paper map, flat and folded. Status: These maps are no longer maintained. It is planned to produce a new series of maps from the converted 42 World Aeronautical Charts (WAC) series of maps produced in 2006. These maps are only available as a print on demand product. This map can be purchased in either flat or folded format.