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Rift initiation on Australia’s southern margin: insights from the Bremer Sub-basin
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Jane Cunneen, Amanda Buckingham, Cecilia D’Ercole
- Date Published: September 2019
Abstract:
The Bremer Sub-basin occupies a unique position on Australia’s south-west margin. It is influenced by two rift events associated with the breakup of Gondwana: rifting along Australia’s western margin in the Early Cretaceous as well as the souther...
Application of multi-element geochemistry in the weathered environment: Controls, considerations and implications for exploration
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Fiona Best, Matthew Readford, Kristina Walcott
- Date Published: September 2019
Abstract:
Understanding the mobility of individual elements in the oxidised environment is important for the accurate interpretation of geochemical data from regolith and weathered bedrock samples. In the weathered environment, immobile element geochemistry ca...
Eromanga oil traps – a multi field post-mortem
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Keith Martens*
- Date Published: September 2019
Abstract:
The purpose of this paper is to examine the remaining oil potential of the Eromanga Basin, specifically in the Cooper region....
Geology of Australian ore deposits
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: G Neil Phillips*, Kristy Burt
- Date Published: September 2019
Abstract:
The Australian Ore Deposits monograph, published recently by The Australasian Institute of Mining and Metallurgy, has its focus on descriptive summaries of ore deposit geology. These summaries are expected to be long-lasting compilations with value w...
Resistivity structure of the Link East MT transect in the Southern Curnamona Province
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Ben Kay*, Kate Robertson, Stephan Thiel, Graham Heinson
- Date Published: September 2019
Abstract:
We present results of 18 magnetotelluric (MT) stations from the Link East transect adjacent to the 03GA-CU1 Curnamona deep crustal seismic reflection line in the southern Curnamona Province, South Australia. The transect was designed to provide resis...
Dude, where’s my AVO? A case study from the Browse Basin, North West Shelf, Australia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Said Amiribesheli*, Jordan McGlew, Joshua Thorp
- Date Published: September 2019
Abstract:
The Braveheart-1/ST1 well (2009) was drilled on a pronounced Class III AVO anomaly identified on the Braveheart 2D and Braveheart infill 2D seismic data in the Browse Basin, Australia. The well was dry with no indication of hydrocarbons. During a pos...
Smart stitching: adding lateral priors to ensemble inversions as a post-processing step
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Gerhard Visser*
- Date Published: September 2019
Abstract:
The last decade has seen extensive development of Bayesian geophysical inversion methods which produce ensembles of models as outputs. Many of these are limited to producing 1D or very simple and narrow models. It is well established that tying such ...
Determining petrophysical and hydrogeological parameters from historical bore logs for the Leederville-Parmelia aquifer, northern Perth Basin, using regression methods
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Olga Filiptsova*, Sheryl Ryan
- Date Published: September 2019
Abstract:
A new workflow of bore data re-interpretation that increases the value of old data with only a minimal cost has been developed. The workflow estimates hydraulic and petrophysical parameters from historical bore data, providing clay volume, total poro...
MT conductivity signatures of mineral systems: 3D MT over the Eastern Goldfields Super Terrane, Yilgarn Craton
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Kate Selway, Mike Dentith, Sinan Özaydın
- Date Published: September 2019
Abstract:
Magnetotellurics (MT) is emerging as a key tool for understanding giant mineral systems. For MT to be effective in mineral exploration we require both an improved understanding of the causes of electrical conductivity anomalies and an increased numbe...
Feasibility of the quantitative time-lapse seismic characterisation of a heterogeneous CO2 injection
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Roman Isaenkov, Stanislav Glubokovskikh, Boris Gurevich
- Date Published: September 2019
Abstract:
CO2 injection into clastic brine-saturated reservoirs leads to a detectable reduction of the elastic moduli of the reservoir rocks. However, quantitative interpretation of the time-lapse seismic anomalies obtained for CO2 storag...
“Is it pyrite, or a shed?”: intricacies of induced polarisation surveying near grounded metallic infrastructure
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Regis Neroni*, Sam Corbett
- Date Published: September 2019
Abstract:
Metallic grounded infrastructure commonly found in built-up areas such as fences, sheds and various dwellings, can produce induced polarisation anomalies often indistinguishable from bedrock responses typically targeted by base and precious metals ex...
Bayesian geophysical inversion with Gaussian process machine learning and trans-D Markov chain Monte Carlo
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Anandaroop Ray*, David Myer
- Date Published: September 2019
Abstract:
A key aspect of geophysical inversion is the ability to model the earth with a low dimensional representation. There exist various approaches to solve the inverse problem. However, most methods do not automatically adapt inverse model complexity or t...
Fraccing onshore Australia 2019
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Max Williamson*
- Date Published: September 2019
Abstract:
Australia is at last seeing common-sense with some of its key politicians at State level moving to remove barriers to the use of fraccing as an exploration and production technique. The most recent and politically important have been the decisions of...
Which anomaly should I drill? Using spatial statistics to inform exploration in covered IOCG terranes
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Laszlo Katona*, Adrian Fabris
- Date Published: September 2019
Abstract:
This contribution presents a method for efficiently classifying geophysical anomalies and identifying regions and features that share characteristics of many known iron-oxide-copper-gold (IOCG) deposits of the Gawler Craton, and can therefore be used...
Geological investigations with high spatial resolution WV-3 satellite imagery and regional geophysics at the Haib Cu porphyry, Namibia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: R.D. Hewson*, E. Chinkaka, M. van der Meijde, B. Baugh, N. Titus, J.P. Mubita
- Date Published: September 2019
Abstract:
Recent improvements in available multi-spectral satellite-borne shortwave infrared sensors and their spatial resolution opens up the opportunity for furthering surface mineralogy mapping. Their image interpretation can be augmented with regional geop...
Using finite dipole lengths in complete earth 3D MT modelling
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Wolfgang Soyer, Federico Miorelli, Randall Mackie
- Date Published: September 2019
Abstract:
We have quantified the use of finite electric dipole lengths from the point measurement assumptions typical in 3D MT inversion modeling. Electric fields are measured across dipoles of typically 50 m to 200 m at MT soundings. Modeling algorithms, howe...
Learnings from the Gawler Craton airborne survey quality control
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Matthew Hutchens
- Date Published: September 2019
Abstract:
The Geological Survey of South Australia (GSSA) designed the Gawler Craton Airborne Survey (GCAS) to provide high resolution magnetic, gamma-ray and elevation data covering the northern portion of the Gawler Craton. In total, 1.66 million line km wer...
3D interpretation of geological, 3D seismic and conventional geophysical data from the Darlot Gold Mine
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Glenn Pears, James Reid*, John McGaughey, Will Turner, Graeme Hird
- Date Published: September 2019
Abstract:
The Darlot gold mine is an Archean orogenic deposit located in the world-class gold and nickel terrain of the Yandal granite-greenstone belt, part of the Yilgarn Craton in Western Australia....
Full waveform inversion of simultaneous long-offset data
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Nizar Chemingui, Alejandro A. Valenciano, Andrew Long*
- Date Published: September 2019
Abstract:
The standard workflow for velocity model building (VMB) in complex regimes is an interpretive process that requires time-consuming manual intervention and remains an error-prone process that can produce suboptimal results. We discuss an application o...
A brief description of the Andromeda Zn-Cu prospect in the Albany-Fraser Orogenic belt: A geophysical discovery using HT SQUID
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Paul Polito*, Tony Crawford, Tim Worthington, Mike Whitford, Somealy Sheppard
- Date Published: September 2019
Abstract:
The Andromeda Zn-Cu-Au-Ag prospect is a geophysical discovery that represents the first VMS prospect of significance in the Albany-Fraser Orogenic belt, Western Australia. The prospect was first identified following a ground Transient Moving Loop Ele...
High-productivity, high-resolution 3D seismic surveys for open-cut coal operations
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Eric Battig, Heather Schijns, Matt Grant, Neil Millar
- Date Published: September 2019
Abstract:
3D seismic is routinely used for structural characterisation for underground coal operations, however the implementation of this technology for shallow, open-cut resources has been limited. The perceived high cost of shallow 3D seismic has been one o...
Petrophysical “Big Data” – case study from the Stavely Project, western Victoria
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Phil Skladzien
- Date Published: September 2019
Abstract:
The application of recent technological advances to the acquisition of petrophysical datasets has significantly increased the amount of quality, systematic physical rock property measurements that can be captured efficiently and cost effectively. The...
Realtime analysis and well planning using wireline logs in a hydrogeological context
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Benjamin Birt, Olga Filiptsova, Sheryl Ryan, Tim Hopper
- Date Published: September 2019
Abstract:
During the drilling process, numerous decisions must be made, often with limited information. In a known area prior knowledge often guides these decisions. In a recent drilling program in the Northern Perth Basin, as part of a research project to mon...
Case studies on the application of passive seismic horizontal to vertical spectral ratio (HVSR) surveying for heavy mineral sand exploration
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Nigel Cantwell*, Matthew Owers, Jayson Meyers, Sharna Riley
- Date Published: September 2019
Abstract:
This study presents the results from several case studies on the application of passive seismic Horizontal to Vertical Spectral Ratio (HVSR) surveying methods for Heavy Mineral Sand (HMS) deposit subsurface layer detection for exploration and mining....
Probabilistic modelling of sedimentary basin evolution using Bayeslands
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Rohitash Chandra, Danial Azam*, R. Dietmar Müller
- Date Published: September 2019
Abstract:
Badlands is a basin and landscape evolution forward model for simulating the evolution of surface topography, sediment transport and sedimentation at a large range of spatial and time scales. Here we use the Bayesian paradigm to find the best-fit par...
Why storytelling matters…especially in mineral exploration
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Ahmad Saleem, Steve Beresford
- Date Published: September 2019
Abstract:
There is an Indian proverb that goes: “Tell me the truth and I’ll believe it for a while. But tell me a story and it will stay with me forever.” ...
New insights on chimney growth model and native gold enrichment in modern seafloor hydrothermal chimneys
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Siyu Hu*, Steve Barnes, Anais Pagès
- Date Published: September 2019
Abstract:
Seafloor hydrothermal chimneys from back-arc basins are important hosts for metals, e.g. Cu, Zn, Pb, Ag and Au, and bear potential for deep-sea mining. A solid understanding of the distribution of metals requires appreciation of detailed mineralogy a...
CCS in Australia: Activities and Lessons Learned
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Linda Stalker
- Date Published: September 2019
Abstract:
There is the perception that somehow carbon capture and storage (CCS) is too expensive, too complex, and already by-passed by other technologies in Australia. However the challenge of meeting Australia’s commitments to LNG contracts for a growing m...
Integrating hyperspectral and radiometric remote sensing, spatial topographic analysis and surface geochemistry to assist mineral exploration
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: A. S. Caruso*, K.D. Clarke, C.J. Tiddy, M.M. Lewis
- Date Published: September 2019
Abstract:
Exploration and mining companies in Australia are faced with the challenge of locating deep ore deposits potentially buried under hundreds of metres of cover sequence materials. This research aims to investigate how the integration of hyperspectral r...
Surface passive seismic monitoring by the local use of semblance
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: M. Javad Khoshnavaz*, Andrej Bόna, Kit Chambers, Hamidreza Siahkoohi, Alireza Khoshnavaz
- Date Published: September 2019
Abstract:
Monitoring of passive seismic sources generated by mining activities and hydraulic fracturing has an important role in hazard analysis and in development of unconventional reservoirs. Surface arrays are vastly used in such monitoring scenarios with t...