Industry

The AAPG Asia Pacific Region will hold a 2-day Geological Technical Workshop (GTW) in Sydney from 6-7 July 2022.   The theme is Structural Geology and our Future – The Role of Tectonic Geoscience in Energy Transition, Focusing on the Asia-Pacific Region.

The proposed sessions/sub-themes:

1. Regional tectonic settings - Plate movements within the region; tectonic history; palaeo-tectonic reconstructions
2. New structural and tectonic techniques: remote sensing; potential fields; digitalisation; data integration; modelling and simulation
3. Tectonic stresses, faulting and fracture systems, including implications for CO2 sequestration and geothermal/thermodynamic energy
4. Geomechanics and prediction of trapping configurations
5. Fold and Thrust Belts in the Asia Pacific Region
6. Structural controls in base metal, rare Earth, and mineral exploration
7. Tectonic settings and structural regimes key to Hydrogen and Helium exploration
8. Impact of tectonics on geohazard assessment and geo-engineering
9. Structural and fracture understanding for groundwater management

ASEG members are able to register at the AAPG member rate. Additional details can be found here.

ASEG Victoria is super delighted to announce the return of in-person branch events with an upcoming technical meeting night! You are invited to join us for a special presentation by Ian Nielsen (Chief geologist, First AU and Director of PGN Geoscience) on Thursday November 25th from 6pm at The Kelvin Club. This will be the last technical meeting night of the year for Victoria branch so come along and get busy sharing lockdown dramas with your peers over a drink or two.

The Land that Time Forgot: The Victorian Eastern Goldfields

Emerging geological models for evolution of the Eastern Australian continental margin involving accretionary orogenesis of the Southern Tasmanides has transformed Victoria gold and base metals prospectivity. Recognition of the same prospective Ordovician terrane that hosts significant central goldfields deposits at Bendigo and Fosterville in Eastern Victoria was proposed by various researchers over the past decade in which the formation of an orocline was established to constrain the relative rotation of the terrane about the Selwyn Block, now situated in Gippsland. A ground package was pulled together in 2017 with high-graded areas pegged during 2018 and 2019 by Victorian Goldfields Pty Ltd. The portfolio comprises several hundred historic high-grade gold workings amongst a myriad of complex litho-structural settings that includes several unique porphyry copper-molybdenum projects – further demonstration of the significant upside potential of the area.

The flagship Haunted Stream Project (EL006816) contains over one-hundred historic gold workings across an 8.5km strike length. Historic mining head grades were considerably high (>10-50g/t Au) matched with strong production rates for the late 19th century. The majority of hard-rock gold mining ceased prior to the first world war due to a number of contributing factors. Numerous gold mines were worked to depths of ~300ft, however difficulties encountered due to the ingress of water, metallurgical reconciliation and foul air, all of which were unable to be adequately addressed in the late 1890’s, drove miners out leaving an entire district poorly explored and opened at depth.

First Au Ltd acquired an 80% interest in Victorian Goldfields Pty Ltd in mid-2020 and has since spawned a new wave of exploration currently being undertaken within the district, including detailed litho-structural mapping and rock-chipping that has revealed a complex structural and mineralisation history. In-situ rock chip sampling from underground workings have returned grades in excess of 125g/t Au, underscoring the high-fertility potential of the region. A maiden drill campaign at Snowstorm earlier in 2021 produced very encouraging results with a best intersection of 3.1m @ 11.6g/t Au from 53m including 0.8m @ 33g/t Au from 54m. A follow-up drill program is currently being undertaken. First Au expects to also test a number of its copper-gold porphyry prospects in eastern Victorian during Q1 2022.

Speaker biography

Ian Neilson (BSc MSc R.P. Geo MSEG MAIG MGSA) is a structural geologist with significant global exploration and mining experience in orogenic gold, porphyry copper and base-metal deposits. He has spent the past 19-years as a consultant for Jigsaw Geoscience, Model Earth and PGN Geoscience working on numerous projects for clients that include Newmont, First Quantum Minerals, BHP, Newcrest Mining, Placer Dome, KCGM and many others. Ian’s 3D mapping and target generation resulted in the Discovery and subsequent development of the Hidden Secret UG Gold Mine in Kalgoorlie in 2016. More recently, his structural geological work and drill targeting has contributed significant value to several major Victorian gold explorers. Ian is currently a director of PGN Geoscience and Victorian Goldfields Pty Ltd. In 2020, Ian was appointed Chief Geologist of First Au Limited (ASX: FAU).

Note: The Kelvin Club operates under a strict COVID safe plan to help ensure the safety for all its employees and patrons. In-line with the directions issued by Victoria's Chief Health Officer, all visitors to the club must check-in using the QR code provided at the entrance before personally verifying their vaccination status with the attending manager on the evening. If you do not comply with this requirement, you may be denied entry to the club.

Light refreshments will be served during the evening.

Please register your interest in attending this event by using the following link:

https://www.eventbrite.com.au/e/aseg-victoria-technical-meeting-night-tickets-206980673767

ASEG NSW Tech Talk

Presenter:James Daniell (Fender Geophysics)

Title: New insights into sedimentary processes on the margin of the Great Barrier Reef from the reprocessing of historical seismic reflection data.

Registration: https://us02web.zoom.us/webinar/register/WN_7aC3mTsMTwK4YogAYam53A

Description

Mixed siliciclastic–carbonate margins receive significant amounts of both terrigenous siliciclastic material from rivers and carbonate material from biogenic sources. The Great Barrier Reef (GBR) is the largest mixed siliciclastic-carbonate margin on earth and detailed stratigraphic analysis is a key tool for understanding the evolution of this sedimentary system; however, the stratigraphy of the offshore central GBR is poorly understood due to its designation as a UNSECO World Heritage Site. This designation limited the acquisition of reflection seismic data over the GBR and has prevented detailed stratigraphic analysis of the reef and its margins. Geoscience Australia conducted limited seismic surveys over the GBR during the 1970-80s though much of this data has remained unprocessed and subsequently unpublished. Key results from this research are:

1. Significant improvements can be made to the seismic reflection data by applying modern processing algorithms.
2. Shelf-edge deltas near Townsville are preserved by their deposition on to an upper slope broad, low gradient terrace which also limits the transport of coarse sediment downslope. Their ‘lobe’ shape indicates a supply dominated environment.
3. Shelf-edge deltas from the Grafton and Flora Passages are clearly incised by submarine canyons that transport sediment downslope. In the Cairns region shelf-edge deltas have a cuspate form and indicate a wave dominated environment.
4. Reef growth is common on the topsets and upper forests of these deltas indicating that these coarse sedimentary environments are favourable for coral colonisation; therefore, as the shelf extends due to lowstand delta deposition, new habitats are also created for coral reefs.
5. The process driving the clear differences between the northern and central GBR is not well understood; however, ongoing subsidence of the central GBR likely plays a significant role.

Sedimentary processes at the margin of the GBR are clearly diverse. Documenting these differences will aid the interpretation of other modern mixed margins and those in the geological record.

It is my pleasure to invite you to our annual Student Honours Night, on Thursday 11th November at the Coopers Alehouse.

This event is always one of the highlights of the technical and social calendar for the year, one not to be missed! The SA/NT branch of ASEG offers monetary prizes to the best geophysics presentations, as voted by you, the audience!

We have three honours students who will be presenting their projects to you, Emily Lewis, Yi He and Alex Hill all from the University of Adelaide.

Emily Lewis 'Bottom-Up Exploration: Imaging Resistivity of a Mineral System from Source to Sink'

Yi He 'Curnamona Cube: 3D Lithospheric Architecture of a Proterozoic Province'

Alex Hill 'Hunting Palaeorivers in the Gibbsland Basin using 3D Seismic Datasets: Drainage Landscapes of the Southeastern Australian Continental Shelf'

Title: Student Presentation Night

Presenter: Emily Lewis, Yi He, Alex Hill

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

Date: Thursday 11th November 2021

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

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

Click this link to register for MAG21. 

REGISTRATION and RSVP are REQUIRED on or before 19th November to give our hosts at Fraser's Kings Park enough time to properly set up their venue. ASEG WA Branch would like to give thanks to sponsors for their continuous support.

ASEG WA - October Tech Night event
Date & Venue:
Tuesday 26th October 2021
5:30 pm start - 7.30pm end
The Shoe Bar
Shop GSO7 Yagan Square
376 - 420 Wellington St
Perth CBD

Registration: here

The WA Branch of the Australian Society of Exploration Geophysicists invites current active members to attend our upcoming ASEG WA Branch Tech night event at Shoe bar, Yagan Square, but still with the usual snacks and drinks provided. Note that there is plenty of public transportation, and, if need be, paid parking is available at nearby Wilson Parking - 427 Murray St - Google Maps. The venue has wheelchair accessibility. The details of the speech title and the author's bio are provided below.

Speech title: Petrophysics of the Paterson Orogen and Implications for Exploration
Speaker: Barry Bourne, Principal Consultant and Founder, Terra Resources and Terra Petrophysics

Talk summary: 

There is still much that needs to be understood about the physical properties of rocks in mineralized geological environments. This knowledge gap becomes more important as the transition to deeper exploration targets under cover occurs, with an associated greater reliance on geophysical exploration methods.  The Geological Survey of Western Australia's regional petrophysics project, funded by the Exploration Incentive Scheme (EIS) and Terra Petrophysics, aims to provide a state-wide petrophysical dataset that can be used in the interpretation and planning of geophysical data. The Paterson Orogen results are discussed along with the geophysical response of known mineralization in the Paterson including Haverion and Winu.

Speaker Bio: 
 

Barry is a Principal and Founder of Terra Resources and Terra Petrophysics. Up until 2013 he was Chief Geophysicist for Barrick Gold and is now a mineral exploration consultant to private and public international exploration groups.  Barry graduated in geology and geophysics from the University of Western Australia.  He is a Fellow of the Australian Institute of Geoscientists and is currently on the technical advisory committee for UWA Centre for Exploration Targeting.  He was shortlisted for the Australian innovation Awards in 2012 and was Advance Global Australian of the Year-Mining and Resources in 2013.

REGISTRATION and RSVP are REQUIRED on or before 24th October to give our hosts at Shoe Bar enough time to properly set up their venue. ASEG WA Branch would like to give thanks to sponsors for their continuous support.

Please email wasecretary@aseg.org.au with any queries or for additional information. Kindly rsvp in the below link to get a spot as seats are limited. We are looking forward to seeing you there.

ASEG is pleased to announce its collaboration with SEG for the highly anticipated Sixth International Conference on Engineering Geophysics (ICEG) that will be held from 25 - 28 Oct 2021 Virtual | Cape town South Africa.  This provides us the opportunity to provide all ASEG Members to ATTEND virtually with an interactive an immersive experience and the ability to connect with like-minded individuals from across the globe.

ASEG members receive a discounted price of $250 USD by contacting Suba Jaganathan on sjaganathan@seg.org.

ICEG 2021 will concentrate on global innovation, creativity, advances, and new approaches in the field of engineering/environmental geophysics and related fields. In addition to the core engineering/environmental and geotechnical focuses of this coming event, special sessions in related applications of archaeology, energy and forensic geophysics will be included. 

To view the entire technical programme, please visit our website where you can download it.

ASEG is pleased to announce its collaboration with SEG for the highly anticipated Sixth International Conference on Engineering Geophysics (ICEG) that will be held from 25 - 28 Oct 2021 Virtual | Cape town South Africa.  This provides us the opportunity to provide all ASEG Members to ATTEND virtually with an interactive an immersive experience and the ability to connect with like-minded individuals from across the globe.

ASEG members receive a discounted price of $250 USD by contacting Suba Jaganathan on sjaganathan@seg.org.

ICEG 2021 will concentrate on global innovation, creativity, advances, and new approaches in the field of engineering/environmental geophysics and related fields. In addition to the core engineering/environmental and geotechnical focuses of this coming event, special sessions in related applications of archaeology, energy and forensic geophysics will be included. 

To view the entire technical programme, please visit our website where you can download it.

ASEG is pleased to announce its collaboration with SEG for the highly anticipated Sixth International Conference on Engineering Geophysics (ICEG) that will be held from 25 - 28 Oct 2021 Virtual | Cape town South Africa.  This provides us the opportunity to provide all ASEG Members to ATTEND virtually with an interactive an immersive experience and the ability to connect with like-minded individuals from across the globe.

ASEG members receive a discounted price of $250 USD by contacting Suba Jaganathan on sjaganathan@seg.org.

ICEG 2021 will concentrate on global innovation, creativity, advances, and new approaches in the field of engineering/environmental geophysics and related fields. In addition to the core engineering/environmental and geotechnical focuses of this coming event, special sessions in related applications of archaeology, energy and forensic geophysics will be included. 

To view the entire technical programme, please visit our website where you can download it.