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Kriton Glenn - Geoscience Australia - The ins, outs and all abouts of the Galilee Basin Bioregional...
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Transcript of Kriton Glenn - Geoscience Australia - The ins, outs and all abouts of the Galilee Basin Bioregional...
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A scientific collaboration between the Department of Sustainability, Environment, Water, Population and Communities; Bureau of Meteorology; CSIRO Water for a Healthy Country Flagship; and Geoscience Australia
BIOREGIONAL ASSESSMENTS
Providing scientific water resource information associated with coal seam gas and large coal mines
Lake Eyre Bioregional Assessment Galilee subregion Overview Kriton Glenn PhD, Geoscience Australia 5th Galilee Basin Coal & Energy Conference
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Bioregional Assessments overview
• Collaboration – GA – CSIRO – BoM – funded by Department of Environment
• Scientific analysis – provides baseline information on ecology, hydrology, geology & hydrogeology of a bioregion to assist advice to the minister.
• Assessment of potential direct, indirect & cumulative impacts of CSG and coal mining developments on water resources
• Consistent (generic) investigative approach – BRAM
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Bioregional Assessments • potential impacts of CSG and coal mining developments
on water resources. • measurable relationship for connectivity between a
resource and the water dependent asset
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Bioregional assessments
Product No Description
1 Contextual report
2 Asset and receptor register
3 CSG and coal resource assessment
4 Conceptual Model of Causal Pathways (connectivity) 5 Statistical analysis and interpretation report (data processing and
interpretation) 6 Water balance, numerical/analytical groundwater models
7 Report of impacts on receptors
8 Risk analysis report
9 Summary of bioregional assessment findings
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The distribution of the Bioregional Assessment areas
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LEB / Galilee Basin Overview
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Project Contributors • Galilee and Cooper bioregional assessments
- Geoscience Australia, CSIRO, BOM, OWS • Arckaringa and Pedirka bioregional assessments
- DEWNR groundwater Knowledge projects (SA) - Geoscience Australia, CSIRO, BOM, OWS
Other significant projects – whole of LEB catchment • LEB rivers assessment
- DEWNR (Stage 1 completed june 13) • LEB Springs assessment - QLD agencies and DEWNR (commenced Oct 13)
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LEB Subregions • Primarily sedimentary basins that were active during Late
Carboniferous – Mid Triassic (320-220 million years ago)
• Galilee – Only eastern margin outcrops, rest under cover (up to 1 km) Coal/CSG Targets - Aramac Coal Measures, Betts Ck Beds, Bandanna
• Cooper – Doesn’t outcrop (Can be > 1km cover)
CSG Target – Patchawarra & Toolachee • Arckaringa – Western Margin outcrops
Coal/?CSG Target – Toondina Fm, (low rank coals)
• Pedirka – minimal outcrop, generally > 400m cover CSG Target – Purni Fm
• Main Cover sequence – Great Artesian (Eromanga) Basin (note: coal resources also identified in Winton Fm)
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Regional Schematic cross Section
Galilee
Cooper
Pedirka
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Galilee Subregion
• Includes headwaters of
6 surface water catchments.
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Progress so far • Commenced July 2013
• Activities • Contextual report (summary of current knowledge of geology,
hydrogeology, hydrology, ecology, geography) • Commenced data compilation and analysis • Water Assets List for subregion • Commenced resources assessment development component of BA
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Structures and Depositional centres
• Identification of major
structures and depocentres
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stratigraphic column
• Compiled for whole of Galilee
subregion in a standardised format • Includes Galilee, Eromanga
Basins and Cenozoic stratigraphy • Galilee stratigraphy split into 3
major regions to reflect local stratigraphic variations
Eromanga Basin
Galilee Basin
Cenozoic
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Regional potentiometric Surfaces Cretaceous aquifers: E.g. Cadna-owie Formation - Hooray Sandstone - Initial first pass shown
here based on GBOF datasets,
- Further analysis with additional data to follow.
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shallow water table mapping
• For Eromanga only at the moment.
• Further work to follow • Dark colours
(topographical higher)
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Potential for inter-aquifer leakage
• Potential for connectivity between Eromanga Basin and underlying Galilee
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Some Water Assets and Potential developments
• Using information from different
disciplines to assess potential for impacts and risks to water assets from developments on a local and regional (cumulative) scale
• Far more water related assets in subregion
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Benefits to Industry Benefits include • Transparent regional Baseline information • A framework or risk analysis and impacts • Preliminary work on cumulative impacts How can industry help? • Discussion with BA on geological setting,
proposed developments & data availability
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Kriton Glenn PhD Hydrogeology and Energy Section Leader Environmental Geoscience Division GEOSCIENCE AUSTRALIA Phone: +61 2 6249 9379 Fax: +61 2 6249 9999 Email: [email protected] Web: www.ga.gov.au
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BRAM web address www.environment.gov.au/coal-seam-gas-mining/bioregional-assessments.html
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Product list
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Work flow / decision tree