Ausaem20-WA Project Page 3 Nambeet Reference Section for Petroleum Exploration Well Page 4
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A Geological Survey of Western Australia Newsletter APRIL 2021 NUMBER 98 Government of Western Australia Department of Mines, Industry Regulation and Safety www.dmirs.wa.gov.au/GSWA AusAEM20-WA project page 3 Nambeet reference section for petroleum exploration well page 4 New drone-assisted 3D models of outcrops page 6 Dating of fault events page 5 New release on the east Pilbara Craton page 6 What’s inside FEATURES Access publications 3 Geophysical surveys All publications 4 Nambeet Formation reference section Download maps, reports and digital information free from our website. 5 K–Ar geochronology 6 East Pilbara Craton Hard copies 7 Carbon capture and storage Maps, USB data packages and various premium publications are available to 8 Perth Basin purchase as hard copies from the eBookshop or the First Floor counter at Mineral House, 100 Plain Street, East Perth WA 6004. An online cart and payment 9, 10GreatSm–Nd Sandy Isotope Desert map of Western Australia system is in place. Records, Reports, Bulletins and other non-series books cannot 11 Southern Canning Basin NORTHERN TERRITbe purchased in hard copy but are all available as PDFs to view and download WESTERN AUSTRALIA ORY REGULARS free of charge. 12 Product releases Fieldnotes Great V ictoria DesertFieldnotesSOUTH is a free digital-only quarterly newsletter published by the Geological SurveyAUSTRALIA of Western Australia (GSWA). The newsletter provides regular updates to the State’s exploration industry and other geoscientists about GSWA’s latest work, programs, products and services. 121°30' 122°00' 500 km Anketell – Access Fieldnotes by: Winu Samphire Citadel Au Cu WESTERN AUSTRALIA 20°00' LRWS Lalla Rookh – Western Shaw Fault 3 5Perth INDIAN OCEAN Phanerozoic basins 121°30' Structural Corridor ZONE Kalgoorlie MC Mosquito Creek Basin System SHEAR 122°30' • subscribing to the GSWA eNewsletter — there will be a Fieldnotes page with a ZONE DG De Grey Superbasin SHOLL 21°00' Barnicarndy ONIC ZONE KT Kurrana Terrane Anketell T LRWS TECT Graben Shelf AUL F DG SHEAR Shaw Granite dome, greenstone link to the latest issue W PILBARA SHA Muccan Major fault or shear zone Barnicarndy Hills CENTRAL Carlindi Warrawagine Major fault or shear zone; Lake Waukarlycarly TABBA inferred, concealed WESTERN – Telfer Road Uranium ROOKH Minyari-WA • browsing previous issues from the eBookshop. TABBA LALLA CA Au Cu Co DG North V Mount Edgar ines Pole Potassium Barnicarndy 1 21°30' BarnicarndyParallel Yule Thorium Corunna Yilgalong Range Downs Nifty Cu McPhee Telfer Au Cu Fault Fault GSWA eNewsletter Shaw Fault O’Callaghans LRWS MC W Cu Zn Pb Tambourah SHEAR ZONE 6 11 KT The GSWA eNewsletter is an online newsletter delivered roughly once a month KURRANA LN214a 50 km 25.03.21 18°21' Neoarchean and Proterozoic basins 1 50 km 22°15' AHH785 15.03.21 Canning Basin Steel alloy metal Road/track that contains information on workshops, field trips, training, events and the latest Basement Precious metal Kidson Seismic Line Base metal Fault Drillhole releases of maps, books and digital data packages. If you would like to stay informed about new products, services and other news, please subscribe. EDITORIAL TEAM Editor GSWA publishes a vast amount of pre-competitive geoscience information on the State, contributing to billions of dollars’ worth of resources for exploration and Robin Bower, Manager Editing and Publishing development. To find more information about publications and maps we publish, Esperance Design and layout go to our website. Bec Hitchings, Desktop Publisher 2020 NUMBER 94 APRIL JULY 2020 NUMBER 95 Australia Graphics estern Australia Mines, Industry Regulation estern Government of W Government ofMines, W Industry Regulation Department of A GeologicalDepartment Survey of of Western Australia Newsletter Michael Prause, Graphics Manager 100 km A Geological Survey of Western Australia Newsletterand Safety and Safety A Geological Survey of Western Australia Newsletter APRIL 2021 NUMBER 98 SHDH91 14/04/21 www.dmirs.wa.gov.au/GSWA Government of W Department of estern Contributors to this issue www.dmirs.wa.gov.au/GSWA and Safety Mines, IndustryAustralia Regulation www.dmirs.wa.gov.au/GSWA AusAEM20-WA project Round 21 EIS co-funded Deidre Brooks page 3 WARevealing is top the Proterozoic geology beneath the drilling announced page 8 page 3 investment page 3 Nambeet reference Huntly Cutten Nullarbordestination Plain – Eucla basementsection for petroleum t Results published for exploration well Louisa Dent page 10 Waukarlycarly 1 drilling projec page 4 Premium Peter Haines New drone-assisted 3D models of outcropspublication on page 6 microbialites Arthur Hickman releasedpage 5 David Howard Yongjun Lu Dating of fault events page 5 Leon Normore New release on the east Pilbara Craton page 6 Cover image: AusAEM20-WA TEMPEST blocks — stacked profiles of conductivity–depth Disclaimer images (image courtesy of Geoscience Australia) Products use information from various sources. The Department of Mines, Industry Regulation and Safety (DMIRS) and the State cannot guarantee the accuracy, currency or completeness of the information. DMIRS and the State accept no responsibility and disclaim all liability for any loss, damage or costs incurred as a result of any use of or reliance, whether wholly or in part, upon the information provided in this publication or incorporated into it by reference. ISSN 1834-2272 ISBN 978-1-74168-920-4 GSWA Fieldnotes 98 2 April 2021 Geophysical surveys AusAEM20-WA project — March 2021 update The TEMPEST component of AusAEM20-WA Stage 1 is complete (Fig. 1 and front cover). Data from the Eastern Goldfields and the East Yilgarn survey blocks were released on 4 February 2021, followed by the neighbouring Earaheedy–Desert block data set on 25 March 2021. AusAEM20-WA is a National Collaborative Framework Agreement Broome project between the Geological Survey of Western Australia 18° (GSWA) and Geoscience Australia (GA). Its objective is to complete 20 km airborne electromagnetic (AEM) coverage of those parts of Western Australia that were not surveyed as EFTF part of Year 2 of GA’s Exploring for the Future AusAEM survey. AusAEM Year 2 Northern Territory Figure 2 shows the location of the Stage 1 survey blocks for (71388) coverage with the TEMPEST and SkyTEM systems. 24° Data acquisition with the SkyTEM system in the Southwest Capricorn 2013 Carnarvon (70825) 71636 block resumed on 8 March 2021, after having been suspended in Earaheedy November 2020 when the survey helicopter was redeployed to 71586 Desert summer bushfire work. Acquisition over the Murchison block will Murchison East follow after the Southwest block is complete. Plans are for the Yilgarn 71635 South data from both blocks to be available by the end of 2021. AusAEM20-WA EGF AusAEM20-WA Australia SkyTEM TEMPEST Planning is in progress for coverage of the remaining strip in 30° blocks blocks the southeast of Western Australia, tentatively in the 2021–22 financial year. Ultimately, the coverage of Western Australia will PERTH go a long way to attainment of the aspirational national goal of Southwest 20 km AEM coverage over continental Australia — AusAEM20. Funding for AusAEM20-WA is from the Western Australian 250 km government’s Exploration Incentive Scheme with additional 114° 120° 126° SHDH90 14/04/21 support from the State’s COVID-19 recovery plan. Figure 2. Location of AusAEM20-WA survey areas. Numbers refer to dataset Data from the recently released datasets (and other government- registration numbers in MAGIX data repository funded regional datasets) may be downloaded from GeoVIEW. WA — GSWA’s interactive mapping, data discovery and data delivery platform — or from the national Geophysical Archive Data Delivery System (GADDS) hosted by GA. For more information, contact [email protected]. ORY Broome NORTHERN TERRIT Great Sandy Desert AUSTRALIA WESTERN SOUTH AUSTRALIA ictoria Desert Great V Kalgoorlie Geraldton Esperance Perth 200 km SHDH92 22/04/21 ISSN 1834-2272 ISBN 978-1-74168-920-4 Figure 1. AusAEM20-WA TEMPEST blocks — stacked profiles of conductivity–depth images (image courtesy of GA) GSWA Fieldnotes 98 3 April 2021 Nambeet Formation reference section Nambeet Formation reference section defined in petroleum exploration well Olympic 1 A new reference section for the Lower Ordovician Nambeet mudstone and carbonate lithologies that record deposition in a Formation of the Canning Basin is proposed in the Olympic 1 low-angle carbonate/epeiric ramp setting. The Fly Flat Member is petroleum exploration well. The well recovered 319.53 m of sandstone dominated and records deposition between upper and continuous core (277.53 m of Nambeet Formation) and includes lower shoreface environments. The Fly Flat Member comprises the conformable contact between the Nambeet Formation and the lowstand deposits of the initial second-order supersequence overlying Willara Formation. At a total depth of 1447.53 m, the in the Canning Basin. The Samphire Marsh Member makes up well and base of the core is predicted to be around 20 m above the remainder of this supersequence, the transgressive to falling Precambrian basement. Comprehensive geochronological, stage deposits, and the beginning of the successive Canning biostratigraphic and geochemical data has been collected from Basin supersequence. the new reference section. This data, and the length and quality of core, provide a better constrained reference point than the GSWA Report 211 Reference section, revised stratigraphy and original Nambeet Formation type section defined