URL: https://geoscience.data.qld.gov.au/dataset/cr025418 ATP 540, EROMANGA BASIN, REVIEW OF GEOLOGY AND PROSPECTIVITY

URL: https://geoscience.data.qld.gov.au/dataset/cr041041 GSQ RECORD 1989/16: HYDROGEOLOGY OF THE SOUTHWESTERN EROMANGA BASIN, QUEENSLAND

This data release contains the boundaries of assessment units and input data for the assessment of the Eromanga Basin Province, Australia, Cooper Basin Continuous Assessment Unit Boundaries. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the context of the higher-level Total Petroleum System. The Assessment Unit is shown herein as a geographic boundary interpreted, defined, and mapped by the geologist responsible for the province and incorporates a set of known or postulated oil and (or) gas accumulations sharing similar geologic, geographic, and temporal properties within the Total Petroleum System, such as source rock, timing, migration pathways, trapping mechanism, and hydrocarbon type. The Assessment Unit boundary is defined geologically as the limits of the geologic elements that define the Assessment Unit, such as limits of reservoir rock, geologic structures, source rock, and seal lithologies. This data release also contains input data forms. The input data is formatted in a human-readable format used during assessment meetings and is included. Documentation for these csv files is included (Input Forms Column Descriptions.xlsx). Methodology of assessments are documented in USGS Data Series 547 for continuous assessments (https://pubs.usgs.gov/ds/547) and USGS DDS69-D, Chapter 21 for conventional assessments (https://pubs.usgs.gov/dds/dds-069/dds-069-d/REPORTS/69_D_CH_21.pdf).

URL: https://geoscience.data.qld.gov.au/dataset/cr041110 GSQ RECORD 1990/01: WELL LOCATION MAPS FOR THE NORTHERN EROMANGA BASIN, QUEENSLAND

Within the Central Australian region, nominally constrained by 22.5oS 134oE and 31.5oS 144oE for this study, lie several systems of stacked basins beneath the extensive Mesozoic Eromanga Basin. Remnants of Proterozoic basins are largely inferred from gravity, unexplored, and are not everywhere differentiated from an extensive cover of the lower Palaeozoic Warburton Formation. This sequence is the central link between the contiguous Amadeus, Officer and Georgina Basins, and the Thomson Fold Belt. Since the Carboniferous, the region has largely experienced intracratonic sag and has accumulated continental sediments, including thick coal measures, with intermittent tectonism and uplift. In late Early Cretaceous, marine conditions briefly invaded this subsiding region, but continental sedimentation resumed in the Late Cretaceous. Tectonism occurred in the Tertiary with basin inversion and subsequent formation of the Great Artesian Basin. In the Cainozoic, the region is again in subsidence and accommodating fluvial and aeolian sediment slowly into the Eyre Basin. The preserved depocentres of the Carboniferous-Permian-Triassic Cooper, Pedirka-Simpson, and Galilee Basins are spatially separate, although all contain comparable, largely organically-mature continental coal measure sequences.

URL: https://geoscience.data.qld.gov.au/dataset/mr001887 The Geological Map of Central Eromanga Basin, this preliminary edition was produced in 1970, the final map was published in 1974 at 1:1 000 000 to provide an interpretation of known surface geology information. This map was compiled by the Bureau of Mineral Resources, Geology and Geophysics (BMR) and the Department of National Development. The map covers areas in the 1:250 000 map sheet areas of Connemara, Jundah, Blackall, Tambo, Canterbury, Windorah, Adavale, Augathella, Barrolka, Eromanga, Quilpie, Charleville, Durham Downs, Thargomindah, Toompine, Wyandra, Tickalara, Bulloo, Eulo and Cunnamulla. The map product is available to all government agencies, industry and the public for reference. SG54-03, SG54-04, SG55-01, SG55-02, SG54-07, SG54-08, SG55-05, SG55-06, SG54-11, SG54-12, SG55-09, SG55-10, SG54-15, SG54-16, SG55-13, SG55-14, SH54-03, SH54-04, SH55-01, SH55-02. Preliminary Edition 1970 (Subject to amendment). Author: Senior, BR, Johnston, ID.

As part of the Exploring For The Future (EFTF) program, the Australia’s Future Energy Resources (AFER) project has investigated the potential of energy resource commodities in the Pedirka/western Eromanga basins region targeting conventional and unconventional hydrocarbons as well as evaluating the suitability of sedimentary sections to store carbon dioxide. The interpretation of new biostratigraphic and reprocessed seismic data provided new insights into the regional geology of this previously explored region. The Permian, Triassic and Jurassic depositional history of the study area is largely recorded by extensive fluvial-lacustrine sediments, including changes from braided to meandering river systems and sustained periods of flood-plain environments in which thick sequences of coal-bearing strata developed. During the Cretaceous, expanding shallow marine environments were established in the western part of the Pedirka/western Eromanga region. Age-control obtained from palynological analysis and the mapping of key seismic horizons yielded an improved understanding of the extent and character of unconformities which define breaks and changes in depositional processes. Results from new regional stratigraphic correlations initiated a comprehensive review of previously established basin definitions in the greater Pedirka/western Eromanga area. While confirming the stacked nature of these basins which hold sedimentary records from the early Paleozoic to the Late Cretaceous, changes to stratigraphic basin boundaries have been applied to more correctly reflect the impact of unconformity related depositional breaks. As a result, the Lower and Middle Triassic Walkandi Formation is now assigned to the upper section of the Pedirka Basin, while the Upper Triassic Peera Peera Formation represents commencement of deposition in the western Eromanga Basin, thereby abandoning the recognition of the Simpson Basin as a separate Triassic depocenter.