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Groundwater and gas sampling informing hydrogeological conceptualisation of the Precipice and Hutton Sandstone aquifers of the southern Surat Basin
- Publication Name: AEGC 2021
- Authors: J. K. Pearce, H. Hofmann, K. Baublys, et al.
- Date Published: September 2021
Abstract:
The southern Surat Basin in Queensland, Australia, may be a prospective region for geological storage of CO2 within the Precipice Sandstone with the Evergreen Formation acting as a sealing cap-rock of the reservoir. The Hutton Sandstone, a major regi...
A brief history of 3D seismic acquisition in BHP Coal and some predictions for the future
- Publication Name: AEGC 2021
- Authors: Tim Dean, Matt Grant, Margarita Pavlova
- Date Published: September 2021
Abstract:
BHP Coal acquired their first 3D seismic survey in 1998 at the Goonyella mine site. The survey covered an area of 1.6 km² and utilised a 360 channel cabled recording system and an explosive source to record 15 fold data. Since then BHP has acquired ...
An integrated hydrogeophysical and hydrogeological approach to underpin the long-term water security of a remote tropical island
- Publication Name: AEGC 2021
- Authors: Andrew R Taylor, Tim Munday, Chris Turnadge, Joanne Vanderzalm, et al.
- Date Published: September 2021
Abstract:
Groundwater resources that sustain small Indigenous communities in remote parts of northern Australia are often poorly characterised, in part due to their remoteness and the economics of undertaking field investigations. The Warruwi community on Sout...
Geochemical signatures and critical metal contents of key deposit types in the Mount Isa Province, Queensland, Australia
- Publication Name: AEGC 2021
- Authors: Vladimir Lisitsin, Courteney Dhnaram, Matthew Valetich
- Date Published: September 2021
Abstract:
Geological Survey of Queensland undertook a program of geochemical and mineralogical characterisation of key deposit types in the Mount Isa Province in Queensland, Australia. The main objectives of the study included: (1) identification of complete m...
Enhancing interpretation of geophysical models using petrophysical logging
- Publication Name: AEGC 2021
- Authors: Cericia Martinez, Shane Mulè, Teagan Blaikie, Jelena Markov
- Date Published: September 2021
Abstract:
Direct petrophysical measurements, such as density and magnetic susceptibility, may prove useful in improving the interpretability of geophysical models. With measurements becoming more abundant and the capability to measure petrophysical properties ...
The Role of Passive Seismic Imaging in Near-Mine Exploration
- Publication Name: AEGC 2021
- Authors: Gerrit Olivier, Andrew Foley, Nicola Ramm, et al.
- Date Published: September 2021
Abstract:
The future of the mineral mining industry relies on the ongoing success of exploration projects. In this paper, the use of near-mine passive seismic imaging is discussed as a solution to exploration demands. We explore the issues currently being face...
3D Bedrock Model Utilising Multi-channel Analysis of Surface Waves to Assist the Land Development Industry in Greater Melbourne, VIC
- Publication Name: AEGC 2021
- Authors: Tavis Lavell
- Date Published: September 2021
Abstract:
A common problem across greater Melbourne’s expanding land development, both residential and commercial, is encountering sites that have incredibly stiff and undulating bedrock. This is experienced on sites with Newer Volcanic Basalt which accounts...
Stratigraphic drilling in the era of EFTF: The Barnicarndy 1 and NDI Carrara 1 wells
- Publication Name: AEGC 2021
- Authors: Adam H.E. Bailey, Emmanuelle Grosjean, Liuqi Wang, et al.
- Date Published: September 2021
Abstract:
Exploring for the Future (EFTF) is an Australian Government initiative that gathers new data and information about potential mineral, energy and groundwater resources. Commencing in 2016 with a focus on northern Australia, an EFTF extension to 2024 w...
3-D Gravity Geometry Inversion of the Matheson Area, Abitibi greenstone belt: maintaining the contacts of one of the geological unit fixed for obtaining superior results
- Publication Name: AEGC 2021
- Authors: Fabiano Della Justina
- Date Published: September 2021
Abstract:
Using measured density values and surface geology as constraints, and a compilation of two data sets of ground gravity as observed data, 3-D inversions using the VPmg algorithm were used to estimate the subsurface model in the Matheson area, which is...
Onshore seismic acquisition: out with the old, in with the new
- Publication Name: AEGC 2021
- Authors: Denis Sweeney, Tim Dean, Claudio Strobbia, John Hughes, Martin Bayly
- Date Published: September 2021
Abstract:
The move from cable-based telemetry seismic acquisition systems with strings of wire-connected geophones to independent nodal, single sensor recording has been dramatic and is reflected by the plethora of nodal systems on offer and their increased us...
A method for the downward continuation of gravity data using Padé approximation
- Publication Name: AEGC 2021
- Authors: Chong Zhang, Qingtian Lü, Yayong Yan
- Date Published: September 2021
Abstract:
Downward continuation of exploration gravity or magnetic data is a basic part of many data processing and interpretation techniques. Methods based on Taylor approximations are quick, easy, and visual ways to obtain good results. But for prediction, T...
Optimising 3D coal seismic imaging with pre-stack depth migration
- Publication Name: AEGC 2021
- Authors: Xiaodong Lu, Alan Meulenbroek, Karel Driml
- Date Published: September 2021
Abstract:
Pre-stack depth migration (PSDM) is applied to a 3D seismic survey from the Bowen Basin in QLD to improve imaging of shallow coal-seams which suffer from poor signal-to-noise caused by poor statics and velocities. Two different velocity fields are us...
Seismic inversion by hybrid machine learning
- Publication Name: AEGC 2021
- Authors: Yuqing Chen, Erdinc Saygin
- Date Published: September 2021
Abstract:
Full waveform inversion (FWI) has been widely used for recovering a high-resolution subsurface structure from the entire content of measured seismic data. However, FWI requires a good starting model which needs to be close to the true model. If it is...
Lithospheric resistivity structures and mineral prospectivity from AusLAMP data in northern Australia
- Publication Name: AEGC 2021
- Authors: Jingming Duan, Darren Kyi, Wenping Jiang, Michael Doublier, Alison Kirkby
- Date Published: September 2021
Abstract:
Magnetotelluric (MT) data allow geoscientists to investigate the link between mineralisation and lithospheric-scale features and processes. In particular, the highly conductive structures imaged by MT data appear to map the pathways of large-scale pa...
Detailed geophysical mapping and 3D geological modelling to support urban planning: A case study of Ny Rosborg, Denmark
- Publication Name: AEGC 2021
- Authors: Theis R. Andersen, Søren E. Poulsen, Anna B. Medhus
- Date Published: September 2021
Abstract:
At present, urbanisation is taking place. As cities expand, areas previously omitted due to construction risks are now being urbanised. These areas are typically characterised as those with unforeseen soil properties, unknown groundwater conditions a...
Automated fracture detection and characterization from unwrapped drill-core images using Mask R-CNN
- Publication Name: AEGC 2021
- Authors: Fatimah Alzubaidi, Patrick Makuluni, Stuart R. Clark, et al.
- Date Published: September 2021
Abstract:
Drill cores provide the most reliable fracture information in subsurface formations as they present a clear and direct view of fractures. Core observation and image log interpretation are usually integrated for fracture analysis of underground layers...
Inverting the head wave coefficient with the Werth equation
- Publication Name: AEGC 2021
- Authors: Derecke Palmer
- Date Published: September 2021
Abstract:
The head wave coefficient, the refraction analogue of the reflection coefficient, is a complex function of the densities and the P- and S-wave velocities in both the weathered and sub-weathered regions. In general, the head wave coefficient increases...
Complex recharge mechanisms creating contradictory tracer signals in a large karst aquifer in northern Australia elucidated by a multi-tracer study
- Publication Name: AEGC 2021
- Authors: Axel Suckow, Alec Deslandes, Christoph Gerber, Cornelia Wilske, Sebastien Lamontagne, Yang Guo-Min, Jiang Wei
- Date Published: September 2021
Abstract:
The up to 300m thick Cambrian Limestone Aquifer in northern Australia extends over different climatic zones from the dry savanna to the tropics and is karstified. This hydrologically challenging system was studied using multiple environmental tracer ...
Curtin In-Situ GeoLab – advancing geophysical sensing
- Publication Name: AEGC 2021
- Authors: K. Tertyshnikov, S. Zulic, A. Yurikov, S. Yavuz, E. Sidenko, R. Isaenkov, R. Pevzner
- Date Published: September 2021
Abstract:
The Distributed Acoustic Sensing (DAS) is a novel approach in sensing which constantly increasing its presence in various geophysical applications. It is paramount to understand the measurements, their limitations and performance of the technology fo...
Multi-purpose utility of constructing 3D static Geomechanical model in the Ichthys field, Browse Basin
- Publication Name: AEGC 2021
- Authors: Partha Pratim Mandal, Iman Essa, Sankhajit Saha, Reza Rezaee
- Date Published: September 2021
Abstract:
The petroleum industry progressed significantly to develop 3D/4D geomechanical models (GMs) to make efficient field development planning which reduces the uncertainty of 1D GM in the field scale. In this paper, we demonstrated how to build a high-res...
The role of geophysics in the discovery of the Gonneville PGE-NiCu-Co-Au Deposit, Julimar, Western Australia
- Publication Name: AEGC 2021
- Authors: Jacob Paggi, Kevin Frost, Bruce Kendall
- Date Published: September 2021
Abstract:
The Gonneville deposit is a significant new PGE-nickelcopper-cobalt-gold sulphide deposit discovered by Chalice Mining in 2020. Located only 70 km northeast of Perth, Western Australia, it represents the first major discovery of a PGE-rich orthomagma...
The present-day state of tectonic stress in eastern Australia
- Publication Name: AEGC 2021
- Authors: Mojtaba Rajabi
- Date Published: September 2021
Abstract:
Knowledge of the present-day stress is important to understand the dynamics of earthquakes, and to manage the safe and sustainable usage of the underground during storage and exploitation. Eastern Australia hosts several sedimentary basins with large...
Geology of the shear zone hosted Dugald River Zn-Pb-Ag deposit, Mt Isa Inlier, NW QLD
- Publication Name: AEGC 2021
- Authors: Corey Jago, Pieter Creus, Shaun Neal
- Date Published: September 2021
Abstract:
Dugald River is a world-class deposit with a total Mineral Resource of 68 Mt @ 11.6 % Zn, 1.2 % Pb, and 26 g/t Ag. The deposit has experienced a protracted history of polyphasal folding, shearing, boudinage and brecciation with mineralisation governe...
Integrated modelling of seismic velocities and impact on prospect evaluation
- Publication Name: AEGC 2021
- Authors: Jarrod Dunne, James Parsons
- Date Published: September 2021
Abstract:
It is often assumed that velocities associated with good quality seismic images can be directly used for time-to-depth conversion, pore-pressure prediction or even as a driver for seismic amplitude interpretation. However, such applications require s...
3D Modelling & Synthesis of Geophysical Data in Nash Creek, New Brunswick, Canada
- Publication Name: AEGC 2021
- Authors: Alexander Furlan, Hernan Ugalde, Alzbeta Ondercova, Bernd Milkereit
- Date Published: September 2021
Abstract:
‘Hotspot’ geophysical exploration has passed its zenith. In areas like New Brunswick, where this exploration style has been successful, deposits with a more complex signature have been left behind. Using improved computational power and geophysic...
Using the NCI Gadi Supercomputer to revolutionise processing of MT time series data: results from the GeoDeVL experiment
- Publication Name: AEGC 2021
- Authors: Nigel Rees, Sheng Wang, Ben Evans, et al.
- Date Published: September 2021
Abstract:
MagnetoTelluric (MT) time series datasets are expensive to acquire, can be high volume (100s of terabytes), and the time taken to publish (measured from collection to release) often takes more than two years. Time series datasets have been notoriousl...
AusArray: uncovering major crustal features using passive seismic data
- Publication Name: AEGC 2021
- Authors: Alexei Gorbatov, Andrew Medlin, Michael P. Doublier, Karol Czarnota, Tanya Fomin, Paul Henson, Brian L.N. Kennett
- Date Published: September 2021
Abstract:
It is generally accepted that improvements in mineral exploration are required to meet the rising demand for minerals associated with a transition to lower carbon energy sources. There is growing consensus in mineral exploration that the distribution...
Diagenetic controls on the reservoir quality of organic-rich shales of the Mesoproterozoic Velkerri Formation (Beetaloo Basin)
- Publication Name: AEGC 2021
- Authors: Claudio Delle Piane, Colin MacRae, William Rickard, Vincent Crombez, Mohinudeen Faiz, David N. Dewhurst
- Date Published: September 2021
Abstract:
This contribution focuses on the organic rich intervals of the prospective Mesoproterozoic Velkerri Formation from the Beetaloo Sub-basin, part of the greater McArthur Basin (Northern Territory). It is based on the integration of petrophysical measur...
Application of LiDAR for hydrocarbon exploration in logistically and geologically challenging environments: examples from the Papuan Fold and Thrust Belt, Papua New Guinea
- Publication Name: AEGC 2021
- Authors: Luke Mahoney, Mitch Furnass, Pedro Restrepo-Pace
- Date Published: September 2021
Abstract:
The Papuan Fold and Thrust Belt (PFTB) in Papua New Guinea hosts the prolific Papuan Basin petroleum system yet remains underexplored compared with other fold and thrust belts worldwide. The underexplored nature of the PFTB results from its remotenes...
Geophysical proxies for redox gradients in IOCG systems: Cloncurry District, Qld, Australia
- Publication Name: AEGC 2021
- Authors: James Austin, Tobias Schlegel, John Walshe, Andreas Bjork, Clive Foss
- Date Published: September 2021
Abstract:
Iron oxide-copper-gold (IOCG) systems, in a broad geophysical sense, include a spectrum of mineralisationstyles ranging from reduced, pyrrhotite-dominant examples, sometimes referred to as iron sulphide coppergold (ISCG) systems, to magnetite-pyrite ...