3 February 2021 - Specialist Group in Economic Geology (SGEG) - Facets of Exploration Webinar
Speaker: Ravi Anand (CSIRO)
Topic: Exploration through in situ and transported cover in regolith-dominated terrains: my journey at CSIRO
Time: WST: 12.00pm – 1.00pm (WA), AEST: 2.00pm - 3.00pm (QLD), ACDT: 2.30pm – 2330pm (SA), AEDT: 3.00pm - 4.00pm (ACT, NSW, TAS, VIC)
Abstract: I will summarise over three decades of research into regolith geology and exploration geochemistry and its impact on mineral exploration. This research was carried out by numerous regolith researchers and industry. Prior to the discovery of nickel in 1966, exploration geochemistry had been little used in Australia. Research during the 1970s and 1980s highlighted the need for a better understanding of the nature and evolution of the regolith and the landscape in which it occurs, and their combined influence on the surface expression of concealed mineralisation. The revival of gold exploration and mining in the 1980s prompted long-term research collaboration with industry through a series of AMIRA/CSIRO projects commencing in 1987. Initially focussed on the Yilgarn, these projects extended in scope across Australia under the auspice of the CRCLEME from 1995 to 2008. These research programmes resulted in two major step-changes in understanding of regolith geoscience and its application in mineral exploration. The first of these changes occurred in the 1980s and 1990s whereas the second step change occurred in the 2000s. Mineral explorers went from seeing the regolith as their greatest hindrance, to seeing it as a potential tool in the quest for the discovery of new deposits. Three of the most important developments were (1) sampling media (e.g., lateritic residuum, calcrete, regolith interfaces), (2) dispersion of gold and other trace elements under changing weathering conditions and (3), landform controls on exploration methods. The approaches, concepts and methods developed are now an integral part of an Australian explorers’ “tool kit” and are also used by industry in similarly deeply weathered terrains elsewhere. They have contributed to numerous ore deposit discoveries worth many billions of dollars in the Yilgarn, elsewhere in Australia and overseas.
By the early 2000s, the focus of exploration was moving to areas dominated by transported cover. Explorers need to ‘see through’ sedimentary cover to find ore bodies buried beneath. The second major step change, in the 2000s, involved identifying whether and how metals migrate through transported cover to form geochemical signatures of buried ore bodies. New knowledge was generated about metal transportation processes that may form geochemical anomalies at the Earth’s surface, and developed predictive models for how and where to use biotic (vegetation, termites mounds, fungi), gaseous and/or other sample media such as Ultrafine soil fraction. An integrated approach, combining different mechanisms with the nature and evolution of transported regolith and climatic settings, was considered to obtain the best prediction of metal transfer.
In Australia, exploration is progressively moving to areas of very deep (>200 m) regolith and basin cover environments. Surface geochemical sampling approaches may not be applicable in these areas. The cost of deep drilling renders high-density sampling of the weathered basement beneath the unconformity economically ineffective. However, older cover, especially, may provide an opportunity for exploration. The research is focussed on unravelling the complex challenges of exploring in areas of deep transported cover through understanding the effects of landscape history, geochronology of weathering and past and present climates on metal transport. Sampling media such as interface, indicator minerals and palaeoredox fronts are promising sampling media for deep cover environments.
Bio: Ravi joined CSIRO in 1987 as a Research Scientist in the Division of Mineralogy, carrying out research into methods of exploring for concealed mineral deposits in Australia’s deeply weathered terrains. He became an Adjunct Professor in regolith geology in 2001 at Curtin University of Technology and Chief Research Scientist in CSIRO in 2006. He retired from CSIRO in 2020 but continue to be involved with the CSIRO as an Honorary Fellow. In 32 years with CSIRO, he has built an international reputation as a leader in the field of weathering, regolith geology and geochemistry as applied to mineral exploration. His research career has focused on developing new and improved methods for mineral exploration in areas of deep weathering and sedimentary cover. Ravi was Applications Coordinator of the CRC for Landscape Evolution and Mineral exploration (1995-2001) and Program leader of Program 2 in the CRC for Landscape Environments and Mineral Exploration (2001-2008). He has led many successful multi-clients Australian Mineral Industries Research Association Limited (AMIRA) projects, and large one to one projects with industry and Geological Surveys, focusing on gold, base metals and nickel exploration in the regolith-dominated terrains of Australia. Research on regolith geology and exploration geochemistry has contributed to the discoveries of a series of gold deposits in Australia. He has provided training in regolith geology to numerous mining companies in Australia and overseas. He has received many national and international awards for regolith research, including a Gold Medal from the Association of Applied Geochemists and Gibb Maitland Medal from the Geological Society of Australia. Following registration, you will receive a Zoom link to watch the webinar.
Registration: Click here
5 February 2021 - AUGEN TEAM Virtual Meeting
Time: 11.00am AEDT (meeting will run for 3 hours)
Details: Format - short talks (10-15 minutes) on teaching innovations, disasters, and successes. Please email a short paragraph to Sandra at: firstname.lastname@example.org to register your presentation topic. We will also have time for discussion on topical general issues such as: COVID-safe teaching and the future of geoscience education in the current higher education climate. If you wish to propose a topic for discussion please email@example.com. Registration is completely free!
Register: Click here
9-12 February 2021 - Australian Earth Sciences Convention 2021: Core to Cosmos - Virtual Conference
Details: The convention will showcase current trends and advances in earth science, including the latest findings on the deep structure and composition of our planet, our diverse crust and surface environments, developments in the energy and resources sectors and critically, the essential role that geoscience plays in our sustainable future. Themes for the convention include:
Theme 1: Energy and resources
Theme 2: Earth structure
Theme 3: Core to crust
Theme 4: Crust, surface and cosmos
Theme 5: Geoscience in society, education and environment
Theme 6: Earth observations and models
Website: Click here
Registration: Click here
18 April 2021 - ACT Division at the Canberra and Region Heritage Festival
Details: During the 2021 ACT Heritage Festival in April, the GSA ACT Division will have a pop-up booth on Federation Mall near Parliament House to highlight the new ACT Fossil Emblem chosen last year by popular vote. The ACT Fossil Emblem is an early Silurian trilobite, Batocara michelli (425 Ma), obtained from a foundation drill core during the 1960s construction of the Treasury Building near the Australian National Library in the Parliamentary Triangle. The drill core is now part of Commonwealth Paleontological Collection held at Geoscience Australia. The GSA event will have an activity where kids can paint their own plaster cast trilobite as a momento. During the World Heritage Day event there will also be walking tours along the nearby heritage-listed State Circle road cutting that features a spectacular structural unconformity between rock sequencies of the Benambran and Tabbeabberan Tectonic Cycles.
Time: 10.00am - 4.40pm
Location: Federation Mall, Parkes, ACT
3-5 August 2021: Uncover Curnamona
Details: Uncover Curnamona is back in 2021 and will include presentations, workshops, core viewing and field trips. Discover new information and ideas from current mineral exploration, and from cutting-edge research by geological surveys, researchers and collaborative partners including the MinEx Cooperative Research Centre. Uncover Curnamona 2021 (UC2021) is a collaboration between the geological surveys of New South Wales and South Australia, Geoscience Australia and the Geological Society of Australia.
UC2021 is planned as a COVID-19 compliant, face-to-face conference. We will continue to monitor health/regulatory advice and announce any change in format as soon as practicable. We will also investigate additional live streaming and recording options.
Tuesday 3 August
Core viewing, and NSW and SA online systems
(e.g. MinView and SARIG) support and
demonstrations at the EC Andrews Drillcore
Facility, followed by an icebreaker event.
Wednesday 4 August
A day of talks at the Broken Hill Civic Centre
followed by an informal dinner. A final program
will be available in April 2021. Sessions will
• MinEx CRC National Drilling Initiative projects
• Exploring for the Future Program, regional
geology and geophysical acquisition projects
• Company exploration projects: geology and
Thursday 5 August
A one-day field trip to explore the geology
Registration: Coming soon
23 - 27 August 2021 - Advancing Earth Observation Forum, Brisbane
Earth Observation Australia Inc. is a collaboration and coordination hub for ALL people who collect and use Earth Observation Data in Australia.
Registrations: Open Thursday 7 January 2021
24-26 August 2021: The Bowen Basin Symposium
Details: The BBGG has a proud history of presenting the Bowen Basin Symposium (BBS) every 5 years since 1985. The theme of 2020’s event is “Coal:Embracing Change and Innovation”. This is the premier event run by geoscientists, for geoscientists and associated personnel, who study, explore, evaluate and mine the occurrence of coal throughout the Bowen and other basins in Queensland. This event was postponed to 2021 from 2020 due to the COVID-19 pandemic
Location: Mackay Entertainment and Convention Centre, Mackay, QLD
Call for abstracts: Click here - closes 12 July 2020
Field Trip: Dinosaur Safari
Website: Please click here
Registration: Click here - we understand that the postponement of the Symposium to 2021 from 2020 raises questions in regards to current registrations, sponsorships, payments, accepted abstracts, program and accommodation booked. Please Click here to view a series of Frequently Asked Questions (FAQ's) to assist you to navigate your way forward.
13-15 September 2021 - Short Course - EPITHERMAL Au-Ag and PORPHYRY Cu-Au EXPLORATION
Presenters: Greg Corbett and Stuart Hayward
Details: This short course has been running since the early 1990’s, then with the late Terry Leach, as an introduction to exploration for epithermal Au-Ag and porphyry Cu-Au ore deposits - http://corbettgeology.com/short-course/ Two days of powerpoint lectures draw on over 40 years of Dr Corbett's work as an Exploration Consultant in over 40 countries. A third day held at the W B Clarke Geoscience Centre, Londonderry, studies drill core and Greg’s specimens of these ore types. Here, Stuart Hayward, an explorationist with similar Pacific rim experience to Greg, helps to teach field relationships (spot the mineral) using drill core and many of the same specimens as feature in the powerpoint presentation. Participants are provided with a draft of the new short course notes which proceed at snail’s pace towards publication, as a colour update with over 1000 rock photos of the earlier notes (Corbett and Leach, 1998, Economic Geology Special Publish 6). Contact firstname.lastname@example.org to be put on the priority list. GSA member students are subsidised.
September 2021 - 15th International Conference on Accelerator Mass Spectrometry
Location: UNSW Sydney, Library Road, Kensington NSW 2052
Contact: ANSTO Event Coordinator: email@example.com
27 September to 1 October 2021 – 19th Biennial Conference for the Australia and New Zealand Geomorphology Group
Location: Alice Springs Convention Centre, Alice Springs, NT
2-5 November 2021- 'Earth, Sea and Sky' SGGMP Biennial Conference
Details: Join us in the beautiful southwest of Western Australia for the latest discoveries and developments in rock and mineral chemistry down under. An intimate four day meeting comprising talks, posters, discussions, field trips and and social gatherings
Themes: Low and high T processes, Critical minerals and Global cycles
Location: Historic Caves House Hotel, Yallingup, 250 km south of Perth, in the heart of the southwest, an area renowned for its majestic karri forests, surf beaches, limestone caves, wineries and Indian Ocean sunsets
Website: Click here
First Circular: Download here
21 to 26 November 2021 – 9th International Acid Sulfate Soils Conference, Adelaide
Details: This is the premier interdisciplinary forum for the presentation of new advances and research results in the fields of acid sulfate soil research, policy and management practices.
2022 Date to be Confirmed - International Archean Symposium
Location: University Club and the Octagon Theatre at the University of Western Australia, Perth
Details: The 6th International Archean Symposium (6IAS) represents the premier international scientific gathering for geoscientists interested in the Early Earth. The program will reflect a decade’s worth of advances in our understanding of how the Early Earth evolved and aims to develop future directions for Precambrian geoscience for the decade to come. The symposium continues the series of highly successful IAS meetings presented every decade by Geoconferences (WA). We invite academic, government and industry geoscientists involved in Precambrian geoscience to attend the 6th International Archean Symposium.
Website: Please click here
2022 Date to be Confirmed - Target 2022
Location: Perth, Western Australia
Website: Please click here