Membership renewals open for 2023 - Click here

SA

SA Branch: Electrical characteristics of porphyry copper deposits

Wednesday, November 23, 2022
1730
1815

Title: Challenging land seismic surveys, from design to implementation to imaging

Presenter: Ken Witherly

Location: Thomas Cooper Room, Coopers Alehouse, 316 Pulteney St, Adelaide

Date: Wednesday 23rd November

Time: 5:30 pm for a 6:15 pm start

Cost: Members & students free, non-members $10, includes finger food & drinks

 

It is my pleasure to invite you to our upcoming technical event, on Wednesday 23th November at 5:30 pm for a 6:15 pm start at the Thomas Cooper Room, Coopers Alehouse.

We have Ken Witherly from Condor Consulting speaking on ‘Electrical characteristics of porphyry copper deposits

Overview:

Electrical methods have been applied to the search for porphyry copper and IOCG deposits since the early 1950s.  While there is a generally accepted model of disseminated sulfides giving rise to a chargeability response, no clear association has been attached to what EM surveys may be responding to. Work in the early 1990s (Nickson 1993) showed the well-developed supergene blankets over a porphyry copper could be conductive; this observation was
however, never applied formally to generally accepted porphyry targeting models. The presence of other conductive zones associated with porphyry copper deposits is even less well studied. On the geological side, while there is a vast body of literature describing porphyry copper deposits and how to discover them, in very few cases do these studies even speculate if anomalous concentrations of sulfides could be conductive. On the geophysical side, observations of unexpected conductivity associated with porphyry systems is sometimes noted but these observations typically stop short of suggesting that there could be a more general observation made that a new class of geophysical feature should be defined. The present study is felt to have gathered a sufficient number of case studies which show that a significant number of porphyry copper deposits posse a mineralogical character which can be identified with EM techniques. This thesis can have significant implications as to how porphyry copper are explored for, especially those at depths >500 m, a generally accepted cut-off for IP techniques.

Bio:

Ken Witherly graduated from UBC (Vancouver Canada) with a BSc in geophysics and physics in 1971.

He then spent 27 years with the Utah/BHP Minerals company during which time as Chief Geophysicist, he championed BHP’s programs in airborne geophysics which resulted in the development of the MegaTEM and Falcon technologies. In 1999, Ken helped form a technology-focused service company that specializes in the application of innovative processing and data analysis to help drive the discovery of new mineral deposits. In 2017, he helped establish the Women Geoscientists of Canada, a group dedicated to support early career women in the minerals industry.

SA Branch: Spring Fling by ASEG, PESA, SPP & YPP

Tuesday, November 15, 2022
1730
2100

We are delighted to invite you to the annual  ASEG, SPE, and PESA Spring Fling event.

Date/Time: Tuesday the 15th November 5:30-8:30 pm

Venue: Havelock Hotel in the Balcony Bar

Registration: Tickets must be purchased through Eventbrite by Monday 14th November 10 am.

Cost: $15 for student members or $25 for members of ASEG, SPE, PESA or YPP. $40 for non-members and includes nibbles and a bar tab.

 

Please ensure you have renewed your ASEG membership prior to attending the events for ASEG discounted/complimentary rates.

Look forward to seeing you soon!

2022 Melbourne Cup - ASEG SA/NT

Tuesday, November 1, 2022
1200
1600

35th Annual ASEG Melbourne Cup 2022

It is with great pleasure that I can officially invite you all to attend this year’s Melbourne Cup Luncheon with the Australian Society of Exploration Geophysicists!

Join us from 12 to 4pm, November 1st for an afternoon of entertainment in the Cumberland Room at the Cumby. Try your luck in the Calcutta Sweep or bypass the draw and claim your prize as best dressed!

Individual, group and corporate sponsor tickets are all available and include admission, a 2 course lunch and a 4 hour drinks package. Get your tickets here:

https://www.eventbrite.com.au/e/35th-annual-aseg-melbourne-cup-2022-tickets-432235807937

Bookings close strictly at 11:59pm on Thursday, 27th of October so don’t miss out! Looking forward to a great turn out this year!

Sub 22 Conference

Monday, November 28, 2022
0900
1700

Sub 22 Conference at the National Wine Centre, Adelaide, November 28th-30th

The symposium will deliver a diverse program of workshops, presentations, panel discussions, informal roundtables and networking opportunities, providing attendees with the chance to contribute and gain interdisciplinary insights into a wide range of scientific concepts, among them:

•   Extracting additional information from data so that complex models of subsurface processes can be better constrained.
•   Obtaining information about the processes governing the formation, evolution and properties of resources of all types.
•   Objectively accounting for petrophysical information in the inversion of geophysical data.

Register at http://sub22.w.tas.currinda.com/

South Australian Exploration and Mining Conference

Friday, December 2, 2022
0900
1700

South Australian Exploration and Mining Conference on the Friday the 2nd of December at the Adelaide Convention Centre

SAEMC is an annual collaborative event that brings together both the exploration and mining industries in South Australia.

Now in its 19th year, it is an opportunity for active mineral explorers and miners to present succinct technical updates of their activities on their flagship South Australian mines and exploration projects.

Register at http://saemc.com.au/

GSSA Discovery Day

Thursday, December 1, 2022
0900
1700

GSSA Discovery Day on the 1st of December at the Adelaide Convention Centre

Discovery Day is the best way to engage with the Geological Survey of South Australia (GSSA) and our collaborative partners as we deliver new data and insights into the regional geology of South Australia.

The day will summarise some of the big projects the GSSA have been working on over the last year, along with some new research being undertaken with collaborating organisations including MinEx CRC, University of Adelaide, CSIRO and Geoscience Australia.

Registration is free at www.energymining.sa.gov.au/discoveryday

Presentation “With one arm tied behind your back – Doing geology by proxy in a faraway place (Mars)” by Prof Juergen Schieber

Friday, August 19, 2022
1730
1930

About this event

PESA, GSA SA Division, ASEG and SPE SA Division Science Talk: “With one arm tied behind your back – Doing geology by proxy in a faraway place (Mars)” by Prof. Juergen Schieber (Indiana University).

Friday 19th August 2022 (arrive at 5:15 pm for a 5:30 pm start).

PESA, the GSA SA Division and SPE SA Division would like to invite members and guests to a jointly organised science seminar by Prof. Juergen Schieber (Indiana University), titled “With one arm tied behind your back – Doing geology by proxy in a faraway place (Mars)”.

Location: Mawson Lecture Theatre, The University of Adelaide and online via Zoom.
Date/Time: Friday 19th August 2022. Please arrive at 5:15 pm (5:30 pm to 7: 30 pm).
Cost: $15 per person

Registration: https://www.eventbrite.com.au/e/joint-society-talk-doing-geology-by-proxy-in-a-faraway-place-mars-tickets-374642926077

Abstract:

Doing geology on other planets, such as Mars, requires for the time being the use of remote controlled rovers. The Curiosity rover on Mars is a rather sophisticated (and expensive) piece of machinery, but geological investigations by rover are labor intensive and slow when compared how we would do comparable tasks on Earth. Although the rover allows us to “see” and “analyze”, critical facets of a geologists traditional “sensory repertoire” are not available (poking around, feel, sound, breaking stuff, smelling and licking). To make up for these deficiencies a large group of highly trained professionals do their level best to analyze the available data and try to arrive at sensible interpretations of what we see. Science by committee, however, has unique risks and “consensus” assessments can still be off-target. Thus, to have more than one well-reasoned interpretation for a single site is not uncommon. Nonetheless, the limitations of this brand of geologic exploration do not hinder progress, and at times they can give us unthought-of new perspectives on things that have become so routine on Earth that we take them for granted (even though we should not). How a limited set of observations can be used to deduce basic modes of sedimentation, diagenesis, and stratal organization in Martian mudstone successions serves as an example on how one could for example do “petrography” without the benefit of a thin section and still make substantial progress. In rover geology you either push your limits or you suffocate in your comfort zone. There is no try.

Biography:

Prof. Juergen Schieber (Indiana University)

Prof. Schieber is a professor of geology at Indiana University and a specialist on shales. Published extensively (190 papers, 20 guidebook chapters, 4 books, 354 conference abstracts) he is also an invited lecturer at universities in the US, Canada, Europe, and Asia; at research organizations, industry short courses, and symposia. He is the 2022 Sorby Medalist of IAS and a member of the science team that currently explores the geology of Gale Crater on Mars with NASA’s Curiosity rover.

His research is characterized by a holistic approach to shales, and consists of an integration of field studies (facies, stratigraphy) and lab studies (thin sections, electron microscopy, and geochemistry) in order to understand the various factors that are involved in the formation of shales. A key focus point is the experimental study of shale sedimentology via flume studies and related experimental work. Funding for this research is provided by government agencies (NSF, DOE, NASA), foundations (Petroleum Research Fund), and industry via the Indiana University Shale Research Consortium (ExxonMobil, Anadarko, Marathon, Shell, Chevron, ConocoPhillips, Wintershall, Whiting, Equinor, Petrochina) and separate research agreements (Schlumberger/TerraTek; Pioneer Natural Resources). He consults on matters pertaining to shale sedimentology, shale fabric and pore structure, and also teaches short courses on shale sedimentology and facies analysis, as well as microscope-based petrography.

His research interests include: Basin Analysis and Sedimentology, Sedimentology, Diagenesis, and Pore Systems of Shales, the Genesis of Black Shales and Sediment hosted Mineral Deposits, Evolution of the Belt Basin and the Devonian basins of the eastern US, Geochemistry of Sediments, Planetary Geology and sedimentary geology of Mars.

When: Friday 19th August 2022. Please arrive at 5:15 pm (5:30 pm to 7: 30 pm).

Where: Mawson Lecture Theatre, The University of Adelaide and online via Zoom.

Zoom link: Details will be emailed to members prior to the meeting.

Cost: $15 per person

Please join us afterward in the Sprigg Room (top level of the Mawson Building, The University of Adelaide) for further discussions, drinks and nibbles (until 7:30 pm).

Please note that this event will be COVID-19 dependant. All COVID-19 precautionary measures will be in place, with all government restrictions adhered to. Please see the South Australian Government COVID-19 website for the most up to date information.

NExUS - Geological Interpretation of Aeromagnetic Data – a Practical Approach

Tuesday, August 2, 2022
TBC
TBC

Geological Interpretation of Aeromagnetic Data – a Practical Approach

2-Day Online Workshop, 1st – 2nd August 2022

(Limited to 30 places)

 

NExUS-Professional Development (NExUS-PD) is proud to be able to present this very 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.
*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, Methodology of Aeromagnetic Interpretation – David Isles (1st Aug) :
• Sessions will include: Basic Principles, Physics and Concepts of Magnetics, Spatial Concepts, Survey Planning, Processing and Presentation of Data, Anomalies, RTP and Analytical Signal, Modelling and Inversion, Introduction to Golden Dyke Prospect Case Study
Day 2, Geological Interpretation and Structure – Leigh Rankin (2nd Aug) :
• Sessions will include: Golden Dyke Prospect Case Study, Magnetisation in Rocks, Charters Towers Case Study, Structures in Magnetics, Widgiemooltha Case Study, Unusual Magnetisation and Final Q+A session.

To Register, click here. 

Full Registration: $500

AIG and ASEG Members: $400

Students: $50

For further information view this flyer or, please contact: Richard.Lilly@Adelaide.edu.au

NExUS - Geological Interpretation of Aeromagnetic Data – a Practical Approach

Monday, August 1, 2022
TBC
TBC

Geological Interpretation of Aeromagnetic Data – a Practical Approach

2-Day Online Workshop, 1st – 2nd August 2022

(Limited to 30 places)

 

NExUS-Professional Development (NExUS-PD) is proud to be able to present this very 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.
*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, Methodology of Aeromagnetic Interpretation – David Isles (1st Aug) :
• Sessions will include: Basic Principles, Physics and Concepts of Magnetics, Spatial Concepts, Survey Planning, Processing and Presentation of Data, Anomalies, RTP and Analytical Signal, Modelling and Inversion, Introduction to Golden Dyke Prospect Case Study
Day 2, Geological Interpretation and Structure – Leigh Rankin (2nd Aug) :
• Sessions will include: Golden Dyke Prospect Case Study, Magnetisation in Rocks, Charters Towers Case Study, Structures in Magnetics, Widgiemooltha Case Study, Unusual Magnetisation and Final Q+A session.

To Register, click here. 

Full Registration: $500

AIG and ASEG Members: $400

Students: $50

For further information view this flyer or, please contact: Richard.Lilly@Adelaide.edu.au

SA/NT AGM + Talk: Challenging land seismic surveys; from design to implementation to imaging

Wednesday, May 25, 2022
1730
1930

Title: Challenging land seismic surveys, from design to implementation to imaging

Presenter: Dr Claudio Strobbia

Location: Thomas Cooper Room, Coopers Alehouse, 316 Pulteney St, Adelaide

Date: Wednesday 25th May

Time: 5:30 pm for a 6:15 pm start

Cost: Members & students free, non-members $10, includes finger food & drinks

SA/NT ASEG Branch Members interested in joining the SA/NT branch committee (President, Treasurer, Secretary, General Committee) please email Ben Kay before 25th May at ben.kay@adelaide.edu.au

Volunteering for a professional society such as the ASEG can be a very rewarding activity with great personal and professional development, and a great opportunity to have impact and contribute to the society. Please feel free to contact me if you have any questions about joining the committee. The AGM will be held 10 minutes prior to Claudios talk. 

Overview:

The challenges of land seismic are a result of the perturbations and of the noise, coherent and incoherent, related to the presence of a highly variable near-surface. The first tens to hundreds of meters not only present a phenomenal variability of geophysical properties, distorting the wavefield, but also host a variety of wave types, which with their scattering can obscure the true reflections from deeper targets. Furthermore, the access and logistical constraints can often prevent a regular sampling of the wavefield.

To solve these challenges and to get a clearer image of the targets, the nature of these phenomena and perturbations must be understood and anticipated. Improvements in signal and noise characterisation can describe and simulate most of the coherent and incoherent noise to create realistic seismic gathers, allowing optimal decisions on the sampling, to define both the micro- and macro-geometry. The novel processing approaches allow leveraging data, for both high-density surveys and sparser, highly irregular geometries.

Claudio will present some novel and innovative approaches to these challenges and demonstrate it is possible to design 3D surveys that result in usable images whilst at the same time maintaining a clear vision to reduce the field effort, safety exposure, costs, and the environmental impact of our seismic operations. Claudio looks forward to a robust discussion with the audience during the Q&A and after the talk. 

Bio:
Claudio is a research and operations geoscientist, with broad interests in exploration seismology, exploration geophysics and earthquake seismology. As a solution-oriented data geoscientist he enjoys exploring different fields and applications, with a preference for land seismology and challenging exploration data. As an entrepreneur, he is the CEO and Chief Research Scientist of Realtimeseismic (RTS) where his focus is on the development and application of technology and innovation in the geosciences.

Prior to RTS, Claudio was the global land processing specialist and seismic processing supervisor with TotalEnergies (Total) in Pau, France. Before joining Total, he was a senior research geophysicist with Schlumberger, stationed in both Cairo, Egypt, and London, UK. He has worked as a researcher for the EUCENTRE in Pavia, Italy and has taught exploration seismology at the University of Milano-Bicocca. His primary interests are in wave physics, inverse problems, near-surface geophysics, and seismic processing. Within exploration seismology, his main contributions are in noise attenuation and near-surface characterization. Claudio has contributed to scientific and commercial advances in seismic acquisition, seismic data conditioning and data processing, near-surface geophysics, and surface waves and reviews for different scientific journals, enjoys developing training modules and content and teaching.

 

Pages