DOCSLIB.ORG

New SHRIMP U-Pb Zircon Ages from the Gawler Craton and Curnamona Province, South Australia, 2008 – 2010 G

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
New SHRIMP U-Pb Zircon Ages from the Gawler Craton and Curnamona Province, South Australia, 2008 – 2010 G GEOSCIENCE AUSTRALIA New SHRIMP U-Pb zircon ages from the Gawler Craton and Curnamona Province, South Australia, 2008 – 2010 G. L. Fraser & N. L. Neumann Record 2010/16 GeoCat # 7034 APPLYING GEOSCIENCE TO AUSTRALIA’S MOST IMPORTANT CHALLENGES SHRIMP Geochronology of SA: 2008 - 2010 New SHRIMP U-Pb zircon ages from the Gawler Craton and Curnamona Province, South Australia, 2008 – 2010 GEOSCIENCE AUSTRALIA RECORD 2010/16 by G. L. Fraser1 & N. L. Neumann1 1Onshore Energy and Minerals Division, Geoscience Australia, GPO Box 378, Canberra, ACT 2601, Australia i SHRIMP Geochronology of SA: 2008 - 2010 Department of Resources, Energy and Tourism Minister for Resources and Energy: The Hon. Martin Ferguson, AM MP Secretary: Mr Drew Clarke Geoscience Australia Chief Executive Officer: Dr Chris Pigram © Commonwealth of Australia, 2010 This work is copyright. Apart from any fair dealings for the purpose of study, research, criticism, or review, as permitted under the Copyright Act 1968, no part may be reproduced by any process without written permission. Copyright is the responsibility of the Chief Executive Officer, Geoscience Australia. Requests and enquiries should be directed to the Chief Executive Officer, Geoscience Australia, GPO Box 378 Canberra ACT 2601. Geoscience Australia has tried to make the information in this product as accurate as possible. However, it does not guarantee that the information is totally accurate or complete. Therefore, you should not solely rely on this information when making a commercial decision. ISSN 1448-2177 ISBN 978-1-921672-93-4 (web) ISBN 978-1-921672-94-1 (print) GeoCat # 70348 Bibliographic reference: Fraser, G.L. and Neumann, N.L. 2010. New SHRIMP U-Pb zircon ages from the Gawler Craton and Curnamona Province, South Australia, 2008 – 2010. Geoscience Australia, Record, 2010/16. ii SHRIMP Geochronology of SA: 2008 - 2010 Contents Introduction .............................................................................................................v Overview .................................................................................................................................. v SHRIMP zircon geochronology methodology ....................................................................... vii Acknowledgements ..............................................................................................viii Southern Gawler Craton...........................................................................................1 Olympic Domain............................................................................................................................. 2 1. Moonabie Formation, SE Mount Whyalla: 2008371055..................................................... 3 2. Volcanic in Moonabie Formation, SE Mount Whyalla: 2008371054 ................................. 6 3. Pandurra Formation, Red Rock Hill: 2008371053 .............................................................. 9 4. Pandurra Formation, Mount Laura: 2008371056 .............................................................. 15 Spencer Domain............................................................................................................................ 18 5. Myola Volcanics, at Myola Station: 2008371049 ............................................................. 19 6. Broadview Schist: 208371073........................................................................................... 22 7. Wertigo Granite: 2008371071........................................................................................... 26 8. Wertigo Granite: 2009371031........................................................................................... 30 9. Unnamed Granite, near Murninnie Mine: 2008371050..................................................... 35 10. McGregor Volcanics: 2008371045 ................................................................................... 38 11. Moonabie Formation, Moonabie Range: 2008371046...................................................... 41 12. Cooyerdoo Granite: 2008371067 ...................................................................................... 44 13. Cooyerdoo Granite: 2008371080 ...................................................................................... 47 14. Cooyerdoo Granite: 2008371086 ...................................................................................... 51 15. Cooyerdoo Granite: 2008371087 ...................................................................................... 55 16. Unnamed gneissic granite, west of Iron Knob: 2008371085............................................. 59 17. Burkitt Granite: 2008371065............................................................................................. 63 18. Burkitt Granite: 2008371084............................................................................................. 66 19. Leucogranite, north of Lake Gilles: 2008371081.............................................................. 69 20. Corunna Conglomerate, Baxter Hills: 2008371062 .......................................................... 73 21. Corunna Conglomerate, Baxter Hills: 2008371063 .......................................................... 76 22. Corunna Conglomerate, Baxter Hills: 2008371064 .......................................................... 81 Cleve Domain ............................................................................................................................... 85 23. Corunna Conglomerate, Uno Range: 2008371068............................................................ 86 24. Corunna Conglomerate, Uno Range: 2008371069............................................................ 90 25. Grey granitic gneiss, Refuge Rocks: 2009371030............................................................. 94 26. Megacrystic gneiss, Refuge Rocks: 2009371029.............................................................. 98 27. Minbrie Gneiss, near Mt Ghearthy: 2008371042 ............................................................ 101 28. Minbrie Gneiss, Elbow Hill: 2008371035....................................................................... 105 29. Middlecamp Granite: 2008371036.................................................................................. 110 30. Carpa Granite: 2008371037............................................................................................. 115 31. Carpa Granite: 2008371034............................................................................................. 118 32. Coolanie Gneiss, at Pinerow: 2008371041...................................................................... 122 33. Garnet-bearing leucogranite, west of Lake Gilles: 2008371082 ..................................... 126 iii SHRIMP Geochronology of SA: 2008 - 2010 34. Warrow Quartzite, west of Lake Gilles: 2008371083 ..................................................... 129 35. Warrow Quartzite, Moseley Nobs: 2009371028 ............................................................. 133 36. Basement gneiss, Menninnie Dam: 2009371041............................................................. 136 37. Cunyarie Granite: 2009371027........................................................................................ 140 37. Carappee Granite: 2008371033 ....................................................................................... 143 39. Megacrystic gneiss, Bascombe Rocks: 2009371026 ....................................................... 146 40. Grey granite, Bascombe Rocks: 2009371025.................................................................. 149 41. Blue Range Beds, Ningana: 2008371031 ........................................................................ 152 Coulta Domain ............................................................................................................................ 156 42. Buckleboo Granite: 2009371024 ..................................................................................... 157 43. Warrow Quartzite, Thurlga Station: 2009371020............................................................ 160 44. Granite, Peter Pan Platforms: 2009371023...................................................................... 164 45. Megacrystic gneiss, Peter Pan Platforms: 2009371022 ................................................... 167 46. Grey gneiss, Peter Pan Platforms: 2009371021............................................................... 171 47. Migmatitic gneiss, Waddikee Rocks: 2009371014.......................................................... 175 Nuyts Domain ............................................................................................................................. 179 48. Blue Range Beds, Mount Wedge: 2008371032............................................................... 180 49. Granitic gneiss, Poverty Corner: 2009371016................................................................. 183 50. Grey gneiss, Little Pinbong Rockhole: 2009371017 ....................................................... 186 51. Leucocratic segregation, Little Pinbong Rockhole: 2009371018 .................................... 189 Curnamona Province ........................................................................................... 192 Moolawatana Domain ................................................................................................................ 192 52. Radium Creek Metamorphics, Paralana Creek: 2007379003.......................................... 193 53. Radium Creek Metamorphics, Paralana Creek:
Load more

Recommended publications
  • What Lies Beneath the Western Gawler Craton? Interpretations and Implications from Deep Crustal Seismic Reflection Profile 13GA-EG1
    What lies beneath the western Gawler Craton? Interpretations and implications from deep crustal seismic reflection profile 13GA-EG1 Wise, Tom 1; Dutch, Rian 1,2 ; Pawley, Mark 1; Doublier, Michael 3, Kennett, Brian 4, Fraser, Geoff 3, Clark, Dan 3 and Thiel, Stephan 1,2 1Geological Survey of South Australia, Department of State Development, Adelaide, South Australia 2 School of Physical Sciences, University of Adelaide, Adelaide, South Australia 3Resources Division, Geoscience Australia, Canberra, ACT 4 Research School of Earth Sciences, Australian National University, Canberra, ACT The eastern section of deep seismic reflection profile 13GA-EG1, here referred to as 13GA-EG1E, starts at Tarcoola in the central Gawler Craton and extends west across the predominantly covered western Gawler Craton, and into the thickly covered Coompana Province. Limited control on the crystalline basement imaged by this seismic transect is available to aid seismic interpretation, as outcrop and drilling are sparse. Neoproterozoic-recent cover thickens to the western end of 13GA-EG1E, with the Neoproterozoic-Ordovician Officer Basin and Cenozoic Eucla Basin combining to provide a cover thickness of up to ~2.5 km. Hence, the seismic profile is a crucial tool for understanding the geology and crustal evolution of this area. The upper crust of the Gawler Craton can be sub-divided into three distinct domains, corresponding to domains previously defined by aeromagnetics. The Wilgena Domain, at the eastern end of the profile, is characterised by apparent east-dipping structures, whereas the Christie and Nawa Domains predominantly contain apparent west-dipping structures. Some of these upper crustal structures can be traced to greater depths, where they either flatten out in the lower crust, or in several cases, offset the Moho.
    [Show full text]
  • The Birder, No. 242, May 2017
    The BIRDER The official newsletter of Birds SA May 2017 No 242 In this Issue New hunting policy Activities for ‘fledglings’ Easter at Sophie’s Patch Linking people with birds in South Australia CONTENTS President’s Message 3 John Gitsham designed the front page of Fledglings’ Field Trip 4 this issue. Birds SA Notes & New 5 Easter Weekend at Sophie’s Patch 7 Jeff Groves took the photograph of a Square- Friends of FAIBS 9 tailed Kite at Para Wirra Conservation Park, Giving Them Wings 11 SA in Sept 2016. Past General Meetings 12 If you would like one of your photographs Future General Meetings 13 to be considered for the front page of the Past Excursions 13 August Birder, please send a hi-res copy Future Excursions 17 to John at [email protected] Bird Records 19 Photos from Members 24 We welcome 14 new members who have CENTRE INSERT: SAOA HISTORICAL SERIES recently joined the Association. Their names No: 60, FRANK MILTON ANGEL are listed on p20. DIARY The following is a list of Birds SA activities for the next few months. Further details of all these activities can be found later in ‘The Birder’. Sunday 28 May Excursion to Sir Richard Peninsula & Goolwa Ponds Saturday 10 June Excursion to Horsnell Gully CP Thursday 22 June Excursion to Jenkins Scrub Friday 29 June General Meeting Sunday 2 July Excursion to Altona Landcare Reserve Saturday 15 July Excursion to Reedy Creek Thursday 20 July Excursion to Anacotilla Springs Friday 28 July General Meeting Sunday 30 July Excursion to Paiwalla Wetlands Saturday 12 August Excursion to Bakara CP Thursday 17 August Excursion to Kyeema CP Friday 25 August General Meeting Sunday 27 August Excursion to Charleston CP Birds SA aims to: • Promote the conservation of Australian birds and their habitats.
    [Show full text]
  • View Annual Report
    ANNUAL REPORT OZ MINERALS ANNUAL REP MINERALSOZ ANNUAL 2012 OZ MINERALS LIMITED ABN 40 005 482 824 O RT 2012 RT A MODERN MINING COMPANY CONTENTS 1 Results for Announcement to the Market 3 Chairman and Managing Director & CEO’s Letter 4 Corporate Governance Statement 10 Directors’ Report 23 Remuneration Overview 27 Remuneration Report 45 Auditor’s Independence Declaration 46 Consolidated Income Statement 47 Consolidated Statement of Comprehensive Income 48 Consolidated Statement of Changes in Equity 49 Consolidated Balance Sheet 50 Consolidated Statement of Cash Flows 51 Notes to the Consolidated Financial Statements 92 Directors’ Declaration 93 Independent Auditor’s Report 95 Shareholder Information IBC Contact Details Computer generated wire frame Front cover: Front model of the Prominent Hill underground development. RESULTS FOR ANNOUNCEMENT TO THE MARKET Provided below are the results for announcement to the market in accordance with Australian Securities Exchange (‘ASX’) Listing Rule 4.2A and Appendix 4E for the Consolidated Entity (‘OZ Minerals’ or the ‘Consolidated Entity’) comprising OZ Minerals Limited (‘OZ Minerals Limited’ or the ‘Company’) and its controlled entities for the year ended 31 December 2012 (the ‘financial year’) compared with the year ended 31 December 2011 ('comparative year'). Highlights • Safety programs continue to drive improved safety performance at Prominent Hill • A solid operational performance for the year with OZ Minerals’: o Revenue of $985.7 million; 1 o Underlying EBITDA of $334.1 million; and o Net
    [Show full text]
  • GSA TODAY North-Central, P
    Vol. 9, No. 10 October 1999 INSIDE • 1999 Honorary Fellows, p. 16 • Awards Nominations, p. 18, 20 • 2000 Section Meetings GSA TODAY North-Central, p. 27 A Publication of the Geological Society of America Rocky Mountain, p. 28 Cordilleran, p. 30 Refining Rodinia: Geologic Evidence for the Australia–Western U.S. connection in the Proterozoic Karl E. Karlstrom, [email protected], Stephen S. Harlan*, Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM 87131 Michael L. Williams, Department of Geosciences, University of Massachusetts, Amherst, MA, 01003-5820, [email protected] James McLelland, Department of Geology, Colgate University, Hamilton, NY 13346, [email protected] John W. Geissman, Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM 87131, [email protected] Karl-Inge Åhäll, Earth Sciences Centre, Göteborg University, Box 460, SE-405 30 Göteborg, Sweden, [email protected] ABSTRACT BALTICA Prior to the Grenvillian continent- continent collision at about 1.0 Ga, the southern margin of Laurentia was a long-lived convergent margin that SWEAT TRANSSCANDINAVIAN extended from Greenland to southern W. GOTHIAM California. The truncation of these 1.8–1.0 Ga orogenic belts in southwest- ern and northeastern Laurentia suggests KETILIDEAN that they once extended farther. We propose that Australia contains the con- tinuation of these belts to the southwest LABRADORIAN and that Baltica was the continuation to the northeast. The combined orogenic LAURENTIA system was comparable in
    [Show full text]
  • M01: Mineral Exploration Licence Applications
    M01 Mineral Exploration Licence Applications 27 September 2021 Resources and Energy Group L4 11 Waymouth Street, Adelaide SA 5000 http://energymining.sa.gov.au/minerals GPO Box 320, ADELAIDE, SA 5001 http://energymining.sa.gov.au/energy_resources Phone +61 8 8463 3000 http://map.sarig.sa.gov.au Email [email protected] Earth Resources Information Sheet - M1 Printed on: 27/09/2021 M01: Mineral Exploration Licence Applications Year Lodged: 1996 File Ref. Applicant Locality Fee Zone Area (km2 ) 250K Map 1996/00118 NiCul Minerals Limited Mount Harcus area - Approx 400km 2,415 Lindsay, WNW of Marla Woodroffe 1996/00185 NiCul Minerals Limited Willugudinna Hill area - Approx 823 Everard 50km NW of Marla 1996/00260 Goldsearch Ltd Ernabella South area - Approx 519 Alberga 180km NW of Marla 1996/00262 Goldsearch Ltd Marble Hill area - Approx 80km NW 463 Abminga, of Marla Alberga 1996/00340 Goldsearch Ltd Birksgate Range area - Approx 2,198 Birksgate 380km W of Marla 1996/00341 Goldsearch Ltd Ayliffe Hill area - Approx 220km NW 1,230 Woodroffe of Marla 1996/00342 Goldsearch Ltd Musgrave Ranges area - Approx 2,136 Alberga 180km NW of Marla 1996/00534 Caytale Pty Ltd Bull Hill area - Approx 240km NW of 1,783 Woodroffe Marla Year Lodged: 1997 File Ref. Applicant Locality Fee Zone Area (km2 ) 250K Map 1997/00040 Minex (Aust) Pty Ltd Bowden Hill area - Approx 300 WNW 1,507 Woodroffe of Marla 1997/00053 Mithril Resources Limited Mt Cooperina Area - approx. 360 km 1,013 Mann WNW of Marla 1997/00055 Mithril Resources Limited Oonmooninna Hill Area - approx.
    [Show full text]
  • The Crustal Geophysical Signature of a World-Class Magmatic Mineral System
    www.nature.com/scientificreports OPEN The crustal geophysical signature of a world-class magmatic mineral system Received: 29 January 2018 Graham Heinson 1, Yohannes Didana1, Paul Soefy1, Stephan Thiel 1,2 & Tom Wise2 Accepted: 2 July 2018 World-class magmatic mineral systems are characterised by fuid/melt originating in the deep crust and Published: xx xx xxxx mantle. However, processes that entrain and focus fuids from a deep-source region to a kilometre-scale deposit through the crust are unclear. A magnetotelluric (MT) and refection seismic program across the margin of the Gawler Craton, Australia yield a distinct signature for a 1590 Ma event associated with emplacement of iron-oxide copper gold uranium (IOCG-U) deposits. Two- and three-dimensional MT modelling images a 50 km wide lower-crustal region of resistivity <10 Ωm along an accreted Proterozoic belt. The least resistive (~1 Ωm) part terminates at the brittle-ductile transition at ~15 km, directly beneath a rifted sedimentary basin. Above the brittle-ductile transition, three narrow low- resistivity zones (~100 Ωm) branch to the surface. The least resistive zone is remarkably aligned with the world-class IOCG-U Olympic Dam deposit and the other two with signifcant known IOCG-U mineral occurrences. These zones are spatially correlated with narrow regions of low seismic refectivity in the upper crust, and the deeper lower-crust conductor is almost seismically transparent. We argue this whole-of-crust imaging encapsulates deep mineral system and maps pathways of metalliferous fuids from crust and mantle sources to emplacement at discrete locations. World-class magmatic ore systems are ofen characterised by fuids/melts that are derived from deep lithosphere, mostly located at the margins of ancient craton1–6.
    [Show full text]
  • Wool Statistical Area's
    Wool Statistical Area's Monday, 24 May, 2010 A ALBURY WEST 2640 N28 ANAMA 5464 S15 ARDEN VALE 5433 S05 ABBETON PARK 5417 S15 ALDAVILLA 2440 N42 ANCONA 3715 V14 ARDGLEN 2338 N20 ABBEY 6280 W18 ALDERSGATE 5070 S18 ANDAMOOKA OPALFIELDS5722 S04 ARDING 2358 N03 ABBOTSFORD 2046 N21 ALDERSYDE 6306 W11 ANDAMOOKA STATION 5720 S04 ARDINGLY 6630 W06 ABBOTSFORD 3067 V30 ALDGATE 5154 S18 ANDAS PARK 5353 S19 ARDJORIE STATION 6728 W01 ABBOTSFORD POINT 2046 N21 ALDGATE NORTH 5154 S18 ANDERSON 3995 V31 ARDLETHAN 2665 N29 ABBOTSHAM 7315 T02 ALDGATE PARK 5154 S18 ANDO 2631 N24 ARDMONA 3629 V09 ABERCROMBIE 2795 N19 ALDINGA 5173 S18 ANDOVER 7120 T05 ARDNO 3312 V20 ABERCROMBIE CAVES 2795 N19 ALDINGA BEACH 5173 S18 ANDREWS 5454 S09 ARDONACHIE 3286 V24 ABERDEEN 5417 S15 ALECTOWN 2870 N15 ANEMBO 2621 N24 ARDROSS 6153 W15 ABERDEEN 7310 T02 ALEXANDER PARK 5039 S18 ANGAS PLAINS 5255 S20 ARDROSSAN 5571 S17 ABERFELDY 3825 V33 ALEXANDRA 3714 V14 ANGAS VALLEY 5238 S25 AREEGRA 3480 V02 ABERFOYLE 2350 N03 ALEXANDRA BRIDGE 6288 W18 ANGASTON 5353 S19 ARGALONG 2720 N27 ABERFOYLE PARK 5159 S18 ALEXANDRA HILLS 4161 Q30 ANGEPENA 5732 S05 ARGENTON 2284 N20 ABINGA 5710 18 ALFORD 5554 S16 ANGIP 3393 V02 ARGENTS HILL 2449 N01 ABROLHOS ISLANDS 6532 W06 ALFORDS POINT 2234 N21 ANGLE PARK 5010 S18 ARGYLE 2852 N17 ABYDOS 6721 W02 ALFRED COVE 6154 W15 ANGLE VALE 5117 S18 ARGYLE 3523 V15 ACACIA CREEK 2476 N02 ALFRED TOWN 2650 N29 ANGLEDALE 2550 N43 ARGYLE 6239 W17 ACACIA PLATEAU 2476 N02 ALFREDTON 3350 V26 ANGLEDOOL 2832 N12 ARGYLE DOWNS STATION6743 W01 ACACIA RIDGE 4110 Q30 ALGEBUCKINA
    [Show full text]
  • Port Augusta There Are 2 Options for SOTA: on Friday the 13Th of March 2020 Hosted by the North East Branch 1) SOTA Is Eligible for the Extension of 3 Years to 2024
    “Advocating for Rural and Remote Education” THEPIPELINE NEWSLETTER OF THE ISOLATED CHILDREN’S PARENTS’ ASSOCIATION - SA JANUARY 2020 Edition 96 SA Shines as Conference is Hailed a Success Convenors are all smiles as day two of the conference provides rainbows, a splash of rain and the hope for more to come. Katrina Morris and I was so lucky to have such a won- photos on fence lines, maps and stalls, and 2019 Federal Conference Convenor derful group of ladies from all over South although the kids weren’t actually there in Australia that led the way to this year’s person, I think the spirit of where we are Armed with a few outback balls and gym- conference, and from the moment I said from and the distances travelled came into khanas already organised under my belt, yes to being the convener to the end of the the room. It was truly amazing to see you I quietly thought I could take on the gig conference, everyone brought their amaz- all with the spectacular back drop of the of organising the Federal Conference for ing talent to the table. Adelaide oval which lived up to our ex- 2019. Although I knew it would be way All of us on the committee really wanted pectations, and the Ian McLachlan room more than ordering food and a couple of to showcase South Australia and having being filled with passionate and down to trophies, I could never have imagined the the conference at the Adelaide Oval was steep learning curve that I was about to un- something we all agreed on and worked earth people wanting the best for their kids’ dertake and how Office Works would be- hard towards right from the start.
    [Show full text]
  • Collaboration Delivers NEW INFORMATION to Support MINERAL EXPLORATION
    ISSUE 78 June 2005 Collaboration delivers NEW INFORMATION to support MINERAL EXPLORATION As part of the National Geoscience Accord, Geoscience Australia is collaborating closely with its state and territory counterparts in regional geoscientific studies to encourage mineral exploration. GA is partnering with the Northern Territory Geological Survey (NTGS) and the Geological Survey of Western Australia (GSWA) on the North Australia and Tanami projects. In the Gawler Craton, we are collaborating with Primary Industry and Resources, South Australia (PIRSA) on the Gawler Project. The recently released NTGS Report 18, ‘Gold mineral system of the Tanami region’, by Wygralak et al (order at www.minerals.nt.gov.au/ntgs/) documents the results of a joint NTGS–GA study on the genesis and geological controls on lode gold deposits in the Tanami region. This report emphasises the importance of second-order structures associated with the D5 deformation event dated at younger than 1815 million years, and emphasises the range of pressures and temperatures of ore formation and the role of fluid reduction as a gold trapping mechanism. More joint reports to come Forthcoming joint reports with the NTGS include ‘Geology and origin of some Cu–Pb–Zn (–Au–Ag) deposits in the Strangways Metamorphic Complex, Arunta Region, Northern Territory’ by Hussey et al, which will document the geology and genesis of Zn–Pb–Cu–Ag and Cu–Au deposits in the eastern Arunta to the east-north-east of Alice Springs. A series of reports by Worden and co-workers will summarise the results of joint geochronology studies through the Northern Territory. Joint work with GSWA on prospects in the western Tanami region will also be released as a GSWA report entitled ‘Preliminary studies of the geologic setting of lode gold deposits in the western Tanami region, Western Australia’ by Bagas et al.
    [Show full text]
  • The Olympic Cu-Au Province, Gawler Craton: a Review of the Lithospheric Architecture, Geodynamic Setting, Alteration Systems, Cover Successions and Prospectivity
    minerals Review The Olympic Cu-Au Province, Gawler Craton: A Review of the Lithospheric Architecture, Geodynamic Setting, Alteration Systems, Cover Successions and Prospectivity Anthony Reid 1,2 1 Geological Survey of South Australia, Department for Energy and Mining, Adelaide, SA 5001, Australia; [email protected]; Tel.: +61-8-8463-3000 2 Department of Earth Sciences, University of Adelaide, Adelaide, SA 5005, Australia Received: 29 May 2019; Accepted: 19 June 2019; Published: 20 June 2019 Abstract: The Olympic Cu-Au Province is a metallogenic province in South Australia that contains one of the world’s most significant Cu-Au-U resources in the Olympic Dam deposit. The Olympic Cu-Au Province also hosts a range of other iron oxide-copper-gold (IOCG) deposits including Prominent Hill and Carrapateena. This paper reviews the geology of the Olympic Cu-Au Province by investigating the lithospheric architecture, geodynamic setting and alteration systematics. In addition, since the province is almost entirely buried by post-mineral cover, the sedimentary cover sequences are also reviewed. The Olympic Cu-Au Province formed during the early Mesoproterozoic, ca. 1.6 Ga and is co-located with a fundamental lithospheric boundary in the eastern Gawler Craton. This metallogenic event was driven in part by melting of a fertile, metasomatized sub-continental lithospheric mantle during a major regional tectonothermal event. Fluid evolution and multiple fluid mixing resulted in alteration assemblages that range from albite, magnetite and other higher temperature minerals to lower temperature assemblages such as hematite, sericite and chlorite. IOCG mineralisation is associated with both high and low temperature assemblages, however, hematite-rich IOCGs are the most economically significant.
    [Show full text]
  • The Coompana Province: Regional Context
    The Coompana Province Regional Context R.A. Dutch Coompana Exploration Release Areas Industry Information Session, Tonsley, May 2016 The Coompana Province • Covers an area of approximately 200 000 km2, straddling the border between South Australia and Western Australia • Bound to the west by the Mundrabilla shear zone, the north by the Musgrave Province, the east by the Gawler Craton and likely extends off shore to the continental margin Arunta Province Musgrave Province Yilgarn Craton Coompana Province AFO Gawler Craton Department of State Development 2 The Coompana Province • There are no known exposed basement rocks of the Coompana Province, with the region being extensively covered by sediments of the Officer, Denman, Bight and Eucla basins Department of State Development 3 The Coompana Province • Due to the often unknown thickness of cover in many places, and the lack of exploration or stratigraphic drilling, very little is known about the basement units Currently • 6 cored basement intersections • 8 percussion basement intersections Mulyawara 1 • 4 intersections into younger basalt Kutjara 1 Lake Maurice E FOR 010 Adi 1 Ooldea 1, 2 & 3 FOR 011 FOR 008 BN 1 & 2 Nullarbor Plains 7 FOR 012FOR 004 CD 1KN 1 Guinewarra Bore Malabie 1 Alballa-Karoo Eucla 1 Potoroo 1 – Off shore Department of State Development 4 Regional Time-Space Plot Department of State Development 5 Regional Time-Space Plot Department of State Development 6 Regional Time-Space Plot Department of State Development 7 Oceanic pre-cursors • No direct evidence of rocks of
    [Show full text]
  • Geomorphology of the Acraman Impact Structure, Gawler Ranges, South Australia
    Cadernos Lab. Xeolóxico de Laxe Coruña. 2010. Vol. 35, pp. 209 - 220 ISSN: 0213-4497 Geomorphology of the Acraman impact structure, Gawler Ranges, South Australia WILLIAMS, G.E.1 and GOSTIN, V.A. 1 (1) Discipline of Geology and Geophysics, School of Earth and Environmental Sciences, University of Adelaide, SA 5005, Australia Abstract The late Neoproterozoic Acraman impact structure occurs mostly in felsic volcanic rocks (Mesoproterozoic Gawler Range Volcanics) in the Gawler Ranges, South Australia, and strongly influences the topography of the region. The structure is expressed topographically by three main features: a near-circular, 30 km diameter low-lying area (Acraman Depression) that includes the eccentrically placed Lake Acraman playa; a partly fault-controlled arcuate valley (Yardea Corridor) at 85–90 km diameter; and arcuate features at 150 km diameter that are visible on satellite images. Geological and geomorphological observations and apatite fission-track data indicate that Acraman is eroded several kilometres below the crater floor, with the structure originally comprising a transient cavity about 40 km in diameter and a final structural rim 85–90 km in diameter. Ejecta of shock- deformed fragments of felsic volcanic rock up to 20 cm across derived from the Acraman impact form an extensive horizon ≤40 cm thick in Ediacaran (about 580 Ma) shale in the Adelaide Geosyncline 240–370 km to the east of the impact site. A correlative band ≤7 mm thick of sand-sized ejecta occurs in mudstone in the Officer Basin up to 540 km to the northwest of Acraman. The dimensions of the impact structure and the geochemistry of the ejecta horizon imply that the bolide was a chondritic asteroid >4 km in diameter.
    [Show full text]