Mineral and Petroleum Resources an Dd Potential
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MMIINNEERRAALL AANNDD Brigalow Belt South PPEETTRROOLLEEUUMM RREESSOOUURRCCEESS AANNDD Stage 2 PPOOTTEENNTTIIAALL NSW WESTERN REGIONAL ASSESSMENTS FINAL SEPTEMBER 2002 Resource and Conservation Assessment Council September 2002 Mineral and Petroleum Resources and Potential DMR WRA 20 September 2002 Mineral and Petroleum Resources and Potential DMR WRA 20 MINERAL AND PETROLEUM RESOURCES AND POTENTIAL NSW WESTERN REGIONAL ASSESSMENTS BRIGALOW BELT SOUTH BIOREGION (STAGE 2) NSW Department of Mineral Resources Geological Survey of New South Wales A project undertaken for the Resource and Conservation Assessment Council NSW Western Regional Assessments Project Number WRA / 20 September 2002 Mineral and Petroleum Resources and Potential DMR WRA 20 For more information and for information on access to data contact the: Resource and Conservation Division, Planning NSW GPO Box 3927 SYDNEY NSW 2001 Phone: (02) 9762 8052 Fax: (02) 9762 8712 www.racac.nsw.gov.au © Crown copyright September 2002 New South Wales Government ISBN 1 74029 180 8 This project has been funded and managed by the Resource and Conservation Division, Planning NSW. This project was completed under the technical direction of the Geological Survey of New South Wales, Department of Mineral Resources (DMR). The overall project was managed through the Resource Information, Integration and Analysis (RIIA) sub-program headed by John Watkins as Principal Geologist. Technical supervision of the coal and petroleum sections of the project was under the direction of Michael Hill, Senior Geologist, Coal and Petroleum. Roger McEvilly, Senior Geologist, RIIA, was the technical supervisor for the minerals (excluding coal) and construction material sections. Michael Hill was responsible for compilation of the report. Michael Hill, Roger McEvilly and John Watkins edited the report. Many Departmental staff members and contractors have made significant contributions to the various BBSB geological assessment projects and to the preparation of this report. They are: • The members of the sedimentary basin analysis and energy resource assessment team including Michael Hill, Julie Moloney, Michael Armstrong, John Brunton, Steve Cozens, Galina Kouzmina, Shaun Leary, Roger McEvilly, Nahla Matti, Winston Pratt, Dr Ray Shaw, Dr Vic Tadros, Glyn Weatherall, and Leslie Wiles. • The members of the Goonoo assessment team including Michael Hill, Steve Cozens, Bruce Kirby, Galina Kouzmina, Bob Moffitt, Glyn Weatherall and Ross Spencer. • The members of the fold belt and mineral resources assessment team including Dave Suppel, John Watkins, Rob Barnes, Roger McEvilly, Greg MacRae, Iain Paterson and Llew Cain. • Dr Ray Shaw who prepared four reports on the petroleum prospectivity of the area and Dr Peter Gunn, Kerry Slater and Roger McEvilly who prepared reports on the geophysical setting of the area. • The members of the Armidale mapping team including Rob Barnes, Mark Dawson, Dr Frances Spiller, and Ken McDonald. • Geophysicists Ross Spencer and Peter Ruszkowski who prepared many of the geophysical data sets. • Ken McDonald, Llew Cain, Roger McEvilly, Margaret McLaren, Sue Parker, and Cheryl Horman who prepared the figures. • Galina Kouzmina, Todd Harrington, and Lynn Fletcher who assisted the editors with final preparation of the report. Disclaimer While every reasonable effort has been made to ensure that this document is correct at the time of printing, the State of New South Wales, its agents and employees, do not assume any responsibility and shall have no liability, consequential or otherwise, of any kind, arising from the use of or reliance on any of the information contained in this document. September 2002 Mineral and Petroleum Resources and Potential DMR WRA 20 CONTENTS 1. INTRODUCTION 1 1.1 REPORT OBJECTIVE 1 1.2 GEOLOGICAL SETTING/DEFINITION 2 1.3 CURRENT LAND USE PRACTICES 5 1.4 NATURE OF EXPLORATION 5 1.5 LAND ACCESS ISSUES 6 2. LEGISLATIVE & ADMINISTRATIVE FRAMEWORKS 7 2.1 LEGISLATION 7 2.2 CURRENT STATUS OF EXPLORATION AND MINING TITLES 9 3. GEOLOGICAL SETTING 18 3.1 INTRODUCTION 18 3.2 LACHLAN FOLD BELT 18 3.3 NEW ENGLAND FOLD BELT 21 3.4 SYDNEY - BOWEN BASIN 22 3.5 GEOLOGY OF THE GUNNEDAH BASIN 26 3.6 GEOLOGY OF THE GILGANDRA SUB BASIN 40 3.7 GEOLOGY OF THE NORTHERN HUNTER COALFIELD 47 3.8 NORTHERN WESTERN COALFIELD 54 3.9 WERRIE BASIN 65 3.10 GUNNEDAH-BOWEN BASIN 67 3.11 SURAT BASIN 73 3.12 WARIALDA TROUGH 77 3.13 TERTIARY VOLCANIC AND SEDIMENTARY UNITS 78 3.14 QUATERNARY SEDIMENTS 79 4. EXPLORATION AND MINING HISTORY 80 4.1 METALLIC MINERALS 80 4.2 INDUSTRIAL MINERALS AND CONSTRUCTION MATERIALS 80 4.3 COAL, PETROLEUM AND COAL SEAM METHANE 82 5. MARKETS AND COMMERCIALISATION 89 5.1 METALLIC AND INDUSTRIAL MINERALS, AND CONSTRUCTION MATERIALS 89 5.2 COAL 90 5.3 COAL SEAM METHANE AND PETROLEUM 91 6. EXPLORATION AND LAND ACCESS 94 6.1 METALLIC AND INDUSTRIAL MINERALS 94 6.2 CONSTRUCTION MATERIALS 95 September 2002 Mineral and Petroleum Resources and Potential DMR WRA 20 6.3 COAL 96 6.4 COAL SEAM METHANE 96 6.5 PETROLEUM 98 7. MINERAL, CONSTRUCTION MATERIAL AND PETROLEUM POTENTIAL ASSESSMENT METHODOLOGY 104 7.1 GENERAL ASSESSMENT METHODOLOGY 104 7.2 SPECIAL ASSESSMENT CRITERIA FOR COAL 105 7.3 SPECIAL ASSESSMENT CRITERIA FOR COAL SEAM METHANE 106 7.4 SPECIAL ASSESSMENT CRITERIA FOR PETROLEUM 108 7.5 SUMMARY OF POTENTIAL METALLIC AND INDUSTRIAL MINERAL, CONSTRUCTION MATERIAL, COAL AND PETROLEUM RESOURCES, SEPTEMBER 2002 109 8. MINERAL, CONSTRUCTION MATERIAL AND PETROLEUM PROSPECTIVITY115 8.1 METALLIC MINERALS 115 8.2 INDUSTRIAL MINERALS 128 8.3 CONSTRUCTION MATERIALS 139 8.4 MISCELLANEOUS OCCURRENCES 141 8.5 COAL 142 8.6 COAL SEAM METHANE 167 8.7 PETROLEUM 172 APPENDICES 1: Operating and Intermittently Operating Industrial Mineral and Construction Material Quarries in the Brigalow Belt South Bioregion (excluding the buffer zone) 2: Metallic and Industrial Mineral, and Construction Material Resource Assessment and Deposit Models 3: Detailed Resource Assessment of the Northern Coalfield Table A3.1: Coal resources and reserves within the colliery holdings and company authorisations in the Ulan - Coolah area (2000-2001) Table A3.2: Ulan Seam resources Table A3.3: Wilpinjong open cut resources Table A3.4: Resources of the Moolarben West underground area Table A3.5: Resources of the Moolarben Creek open cut no. 1 Table A3.6: Moolarben Creek open cut no. 2 Table A3.7: Moolarben Creek open cut no. 3 Table A3.8: Coal resources of the Moolarben Seam open cut area Table A3.9: Coal resources of the Moolarben east underground area Table A3.10: Coal resources in A309, A428 & CCl741 ex. REFERENCES 221 LIST OF FIGURES Figure 1: Location of the Brigalow Belt South Bioregion Figure 2: Geology of the Brigalow Belt South Bioregion Figure 3: Current Metallic and Industrial Mineral Titles, Brigalow Belt South Bioregion Figure 4: Current Coal Mining and Exploration Titles, Brigalow Belt South Bioregion Figure 5: Current Petroleum Exploration Licences, Brigalow Belt South Bioregion Figure 6: Coal Resource Assessment Areas of the Sydney-Gunnedah-Bowen Basins Figure 7: Lachlan Fold Belt and New England Fold Belt Simplified Geological Map Showing Major Subdivisions Figure 8: Gunnedah and Werrie Basins Major Structural Elements Figure 9: Gunnedah Basin Schematic West - East Cross Section Figure 10: Gunnedah Basin Schematic North - South Cross Section Figure 11: Gunnedah and Werrie Basins Structure September 2002 Mineral and Petroleum Resources and Potential DMR WRA 20 Figure 12: Gilgandra Sub-Basin Interpreted Major Structural Elements Figure 13: Northern Hunter Coalfield Subdivisions and Structural Elements Figure 14: Northern Hunter Coalfield Structure Figure 15: Northern Western Coalfield Location Figure 16: Northern Western Coalfield Structure and Isopachs of the Illawarra Coal Measures Figure 17: Northern Western Coalfield West - East Cross Section Figure 18: Gunnedah-Bowen Basin Structural Elements Figure 19: Surat Basin Structural Elements Figure 20: Metallic Mineral, Industrial Mineral and Construction Material Occurrences in the Brigalow Belt South Bioregion (excluding the buffer zone). Figure 21: Gunnedah Basin DMR Boreholes and Mining Titles Figure 22: Seismic Lines, Brigalow Belt South Bioregion Figure 23: Total Magnetic Intensity (RTP), Brigalow Belt South Bioregion Figure 24: Gravity Image, Brigalow Belt South Bioregion Figure 25: Composite Mineral and Petroleum Potential, Brigalow Belt South Bioregion Figure 26: Cumulative Mineral and Petroleum Potential, Brigalow Belt South Bioregion Figure 27: Weighted Composite Mineral and Petroleum Potential, Brigalow Belt South Bioregion Figure 28: Weighted Cumulative Mineral and Petroleum Potential, Brigalow Belt South Bioregion Figure 29: Mineral Potential Tracts for Porphyry Copper-Gold Deposits, Brigalow Belt South Bioregion Figure 30: Mineral Potential Tracts for Epithermal Gold-Silver Deposits, Brigalow Belt South Bioregion Figure 31: Mineral Potential Tracts for Kuroko Volcanic Hosted Massive Sulphide Deposits, Brigalow Belt South Bioregion Figure 32: Mineral Potential Tracts for Orogenic Gold Deposits, Brigalow Belt South Bioregion Figure 33: Mineral Potential Tracts for Zinc-Lead Skarn Deposits, Brigalow Belt South Bioregion Figure 34: Mineral Potential Tracts for Besshi-Cyprus Volcanic Hosted Massive Sulphide Deposits, Brigalow Belt South Bioregion Figure 35: Mineral Potential Tracts for Tin (Greisen & Vein) Deposits, Brigalow Belt South BioregionFigure 36: Mineral Potential Tracts for Alluvial Tin Deposits, Brigalow Belt South Bioregion Figure