Industry

Date: 30th March 2021

Time: 5:30 - 6:30pm AEDT

Register: https://us02web.zoom.us/webinar/register/WN_J6zK4TXCTbCI1PxCI4uF9g

Richard retired from Geoscience Australia after more than a 30 year career of developing new geological understanding to open up provinces for exploration investment. Applied geophysics played a key component throughout his career, and this seminar will be a personal reflection on the key ‘geophysical-aha’ moments that have changed his understanding of a region’s geology and, through this new knowledge, Australia’s mineral potential.

The 30-year story begins in the field as a young geologist using geophysics to map Cape York, Pilbara and Yilgarn and seismic transects across a number of Proterozoic orogens, through the UNCOVER formulation to the lead designer of the Exploring for the Future programme.
 

Title:    An explanation for the distribution of Broken Hill style mineralization invoking dense rift-related igneous intrusions.

Presenter: Peter Gunn (MSc, PhD)
Day and Date of Event:    Wednesday 17th March 2021
Start and finish times:6:00 pm to 7:00 pm AEST

ABSTRACT
This talk is a revised version of an invited keynote presentation made at a Broken Hill Symposium in 2015.
 
The talk will suggest explanations for:
 
-                      the gravity field of the Broken Hill area
-                      the distribution and origin of the Ag-Pb-Zn mineralisation
-                      the distribution and origin of the Cu mineralisation
-                      the magnetic field of the Broken Hill area
-                      the original structure of the Broken Hill area
-                      the present structure of the Broken Hill area
-                      the topography of the Broken Hill area
-                      and - gives guidelines for exploring for Broken Hill type deposits.
 
Various workers have suggested that the Broken Hill area originated as a rift that was subsequently metamorphosed and intensively deformed. The presenter agrees with this idea and, based on his experiences with many well studied rifts elsewhere in the world, largely in the context of hydrocarbon exploration, identifies subtleties that do not appear to have been appreciated as applying to the Broken Hill rift.

Registration link: https://tas.currinda.com/register/event/2198

NExUS-Professional Development (NExUS-PD) workshops are very proud to to be able to present this highly regarded workshop online for the very first time.

The specially designed two-day online workshop will introduce the fundamentals of geological interpretation of aeromagnetic data.

The workshop will feature lectures, practical activities and case studies all using integrated data sets.

Each day will feature 3 x 2hr sessions with exercises to be completed between the sessions and time allocated for extended discussions. 

The format aims for open, transparent communication, with input from participants highly encouraged to share knowledge and experiences.

Note: This is a level-4 course (honours level) and is designed to be suitable for early career geoscientists, honours students and HDR students. The workshop is not assessed.

Day 1 (Tue, 30th Mar): Methodology of Aeromagnetic Interpretation – Presented by David Isles 

Day 2 (Wed, 31st Mar): Geological Interpretation and Structure – Presented by Leigh Rankin 

Cancellation and Refund T&C: Refunds will be given if notice of non-attendance is received prior to 3 days of the course start date or in the event the course is cancelled.

For further information view the flyer here or contact Richard Lilly: richard.lilly@adelaide.edu.au 

Register here.

We would like to remind members that the ASEG are offering full fee paid scholarships to attend the NExUS Course, Geological Interpretation of Aeromagnetic Data. The ASEG will fund registrations for two full and one student registration. Preference will be given to members earlier in their career. 

To apply for the scholarship, ensure your ASEG membership is current, and send an email to secretary@aseg.org.au outlining in 100 words or less how this would benefit you. Applications close 10 March, successful scholarship recipients will be announced Friday 19 March.

ASEG Fed AGM (Tues 6th April, Prof Graham Heinson, 5:30 pm ACDT). 

Zoom link for: https://us02web.zoom.us/meeting/register/tZ0qcOGtrjIoGt0sZtdmtSvXyAg-S7S6uIjn

More details to come.

Using Airborne Gravimetry Data To Improve The Australian Model Of Zero Heights

Presenter name & affiliations / institution: Dr Jack McCubbine, Geoscience Australia.

Abstract: In 2017, a new Australian quasigeoid model (AGQG2017) was released, with an accompanying map of uncertainty values. The model was determined from the national terrestrial gravity database and satellite altimetry derived gravity anomalies. The coverage and reliability of these data limit the accuracy of the quasigeoid model to 5 - 8 cm. However, users of the model require a reference surface which is accurate to 4 cm, or better. Geoscience Australia has partnered with, The South Australian Department of Planning, Transport and Infrastructure, The Surveyor-General Victoria within the Department of Land Water and Planning and The Geological Survey of Victoria within the Department of Jobs, Precincts and Regions to capture airborne gravity data over Greater Adelaide, Greater Melbourne and Eastern Victoria Highlands, to improve the quasigeoid model and to advance geophysical modelling.

Bio: In 2016, Jack was awarded a PhD in Geophysics from Victoria University of Wellington for his work on the collection of a national wide airborne gravity dataset, producing a new series of national gravity grids, and a new quasigeoid model for New Zealand. Following this, he came to work at Curtin University, as a post doc, working on the development of a new Australian quasigeoid model with uncertainty estimates. Jack later moved to work at GA in the National Geodesy section, to assist with the geodetic absolute gravity program and to continue to refine the national quasigeoid model.

More information can be found here: https://www.land.vic.gov.au/surveying/geodesy/airborne-gravity-survey

To register, use the following link: https://us02web.zoom.us/webinar/register/WN_gyOaiZS-RwWMQh2DJBD2aQ

Helping explorers find the nuggets in precompetitive

Join us for David Upton from Precompetitive Review speaking on March 16, 2021 at 12:00 PM (AEDT).

Abstract: Australian precompetitive data and research is having a big impact on mineral discovery in Australia, but it could be doing so much more. We can’t blame this on governments —funding support at federal and state levels is strong. And we can’t blame it in our public geoscientists and academics, who keep on delivering innovative, clever and industry-relevant work. The biggest barrier is a failure by more explorers to seize the opportunities in precompetitive data and research. They can’t be blamed for that either because keeping on top of precompetitive data and research is not easy. Precompetitive Review was launched last year to help the public sector share its work and translate precompetitive data and research into ideas industry can act upon.

Biography: David completed a BSc in Geology at Flinders University in 1985, but chose to write about resources rather than look for them. After several years as a business journalist, including a stint at the SMH/Age in Sydney, he veered off into the murky world of public relations, working for banks, accounting firms and management consultants. David came to his senses in 2007 when he started writing again about mineral exploration. A self-published book released in 2010, The Olympic Dam Story, sparked a fascination with big exploration concepts and the unappreciated value of precompetitive data and research. A decade later, David began publishing Precompetitive Review.

To register, please click here.

EAGE is proud to announce that the4th Asia Pacific Meeting on Near Surface Geoscience& Engineering is scheduled to take place in Ho Chi Minh City from 30 November –2 December 2021.

This meeting aims to strengthen the ties between geoscientists and engineers, academia and industry, the young and experienced in the near surface geoscience domain. Areas that the conference typically covers are geotechnical investigations (infrastructure), geohazards and disaster mitigation, hydrogeophysics & hydrogeology, climate, contamination survey, etc. The conference programme will focuson issues relevant to Vietnamand the Asia Pacificregion and attended by industry professionalsglobally.

The Society of Exploration Geophysicists of Japan (SEGJ) is planning its fourteenth International Symposium on 18-21 October, 2021 online.  The theme of the symposium is "Road ahead for geophysics in digital society: Acquisition, processing, and interpretation".

Inaugurated in 1990, the SEGJ International Symposium has been held every two to three years, and has established as one of the most popular and exciting conferences in applied geophysics in the eastern hemisphere.

Further details may be found on the Symposium's home page.

We have a new webinar on Wednesday 23 March, 4pm AEDT NT is bringing you a talk by Teagan Blaikie and Helen McFarlane of CSIRO on Interpreting high-resolution aeromagnetic data to aid mapping undercover and structural analysis of the Tanami Region and northwest Aileron Province.

Register now: https://us02web.zoom.us/webinar/register/WN_Q4dRbOExQEuiV8tHkm9CKA

Clive Foss and Jim Austin at CSIRO Mineral Resources on From Tenterfield to Mars: Magnetic Modelling with Terrain.

  Register now: https://us02web.zoom.us/webinar/register/WN_m8LruZUdRji2OG23PSPCIA