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Co-operative inversion of geoelectrical data sets acquired from different electrode arrays
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Duy Thong Kieu*, Thi Chinh Truong
- Date Published: September 2019
Abstract:
Direct current resistivity (DCR) method is one of the most commonly applied geophysical exploration methods. The development of data acquisition techniques enables the acquisition of multiple data sets of various electrode arrays with a little extra ...
Structural modification of the Jaguar VHMS Zn-Cu-Ag deposits, Yilgarn Craton, W.A.
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Jonathan Standing, David Potter
- Date Published: September 2019
Abstract:
The Jaguar VHMS camp represents a cluster of small sub-sea-floor replacement style VHMS deposits sandwiched between two closely spaced, craton-scale, shear zones. Despite preserving evidence for growth faults and feeder structures, the country rocks ...
Assessing mineral composition and permeability of a shale seal
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Roman Beloborodov, Marina Pervukhina*, Maxim Lebedev, Juerg Hauser
- Date Published: September 2019
Abstract:
Predicting the mineralogical composition of shales is crucial for drilling operations related to hydrocarbon exploration/production as well as for the assessment of their sealing capacity as hydrocarbon or CO2 barriers. Despite the importance of infe...
Yamarna Geology: Foundations for Further Discovery
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Janet Tunjic*, John Donaldson, Justin Osborne, Clayton Davy’s, Rick Berg
- Date Published: September 2019
Abstract:
World-class gold discoveries are being made in the Yamarna Terrane, one of the least understood terranes of the Yilgarn Craton. Despite many and varied challenges, Gold Road are in the unique position of compiling and constructing the stratigraphic m...
What will it take to improve the characterisation of deep mineral deposits in order to assess “economic value” early in the discovery process?
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Joe Cucuzza*
- Date Published: September 2019
Abstract:
In Australia, in particular, the consensus is that most, if not all, of the world-class non-ferrous mineral deposits that are either at or near the surface have been found. This means that we need to look deeper in the new greenfield search space cha...
Twenty years of pre-competitive geoscience data in the Capricorn Orogen: the link between mineral systems and crustal evolution
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Simon P. Johnson
- Date Published: September 2019
Abstract:
State- and federal-generated pre-competitive geoscience data is critical for exploration success. These relatively low-cost but high-quality regional-scale datasets ultimately reduce the financial risk to explorers by reducing the search space and al...
The mineral factory: how to build a giant quartz reef
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Lisa Tannock*, Marco Herwegh, Alfons Berger, Klaus Regenauer-Lieb
- Date Published: September 2019
Abstract:
Giant quartz reefs can develop as part of a larger scale ‘mineral factory’ within a specific space and time, due to a series of interlinking processes and mechanisms. Ascertaining the criteria for giant quartz reef formation is based on data obta...
Adapting agile workflows to accelerate geoscience study results
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Lendyn Philip
- Date Published: September 2019
Abstract:
Woodside Exploration routinely conducts large regional study projects to inform business decisions regarding new acreage, data acquisition and drilling. Whilst varied, these studies generically comprise phases of data collection and conditioning, ana...
The road to Dorado: factors leading to a play-opening hydrocarbon discovery
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Fred Wehr
- Date Published: September 2019
Abstract:
This presentation describes the events leading up to the Dorado oil discovery made by Quadrant Energy and Carnarvon Petroleum in late 2018. ...
Reliable 1D magnetotelluric probabilistic inversion considering modelling assumption violations
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Hoël Seillé, Gerhard Visser
- Date Published: September 2019
Abstract:
A comprehensive understanding of the sources of uncertainty is essential in stochastic inversion workflows of magnetotelluric data. Input uncertainty related to the electromagnetic noise and measurement biases can be reliably estimated statistically ...
Passive seismic HVSR surveying for groundwater exploration at the Chilalo Graphite Project, Tanzania
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Sharna Riley*, Jayson Meyers, John Sinnott
- Date Published: September 2019
Abstract:
Passive seismic HVSR surveying is increasingly being used for investigating the thickness of soft sedimentary cover deposits sitting over hard and fresh bedrock, and for direct drill targeting of paleochannels for groundwater and brine resources. A d...
A geological pressure model for the Browse Basin and the southern Vulcan Sub-Basin, NWS Australia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Jakob Heller, Toh Shi-Yuan*, Alex Edwards
- Date Published: September 2019
Abstract:
The results presented in this paper draws on a regional pressure analysis of the offshore areas of the Browse Basin and the southern Vulcan Sub-Basin. ...
X-ray computerised tomography for fracture and facies characterisation and slab orientation in cores stored within aluminium tubes
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Lionel Esteban*, Ishtar Barranco, Joel Sarout
- Date Published: September 2019
Abstract:
A 3D image of a whole core section can be generated by stacking contiguous cross-sectional slices from Medical X-ray Computerised Tomography (Medical XCT). This methodology was applied in cores sealed within aluminium barrels allowing selective and o...
Delineating cobalt targets from a galvanic and inductive source Sub-Audio Magnetics (SAM) at the Carlow Castle project, Western Australia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Daniel Eremenco*, Russell Mortimer, Ed Mead
- Date Published: September 2019
Abstract:
The Carlow Castle deposit is located 40 kilometres east of Karratha, Western Australia. The deposit is shear hosted in the Ruth Well Mafic Formation, part of the Roebourne Group. It is interspersed with metagabbro intrusions and brecciated chert cata...
Ultrasonic wave velocities measurements and seismic anisotropy at Karari gold deposit: Implications for gold exploration
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Andre Eduardo C.M. de Souza*, Stephanie Vialle, Andrej Bona
- Date Published: September 2019
Abstract:
In order to understand the nature of reflections imaged by reflection seismic data in hard-rock environment and to investigate the seismic anisotropy across the Karari gold deposit, ultrasonic velocity measurement and seismic anisotropy studies were ...
Pilgangoora Lithium-Tantalum Project: deposit geology and new constraints on rare-metal pegmatite genesis
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: J.S. Holmes*, J.L. Grigson
- Date Published: September 2019
Abstract:
The Pilgangoora lithium-tantalum project encompasses a globally significant Li-Ta pegmatite district which formed in the late-Mesoarchaean, along the western margin of the East Pilbara Terrane in Western Australia. Regional field mapping, coupled wit...
Overly steep decays in airborne TEM data and their link to chargeability: example from the Howards East District, NT, Australia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Klara Steklova*, Ken Lawrie, Esben Auken, Anders V. Christiansen, Gianluca Fiandaca
- Date Published: September 2019
Abstract:
The induced polarization (IP) response in airborne electromagnetic data has recently received attention due to its potential significance for mineral exploration and environmental applications, while also holding the prospect of improved geophysical ...
Carbonate reservoir development in the Canning Basin, Western Australia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Moyra E.J. Wilson*, Samantha Dykmans, Umair Mumtaz, Rashid Saleem, Iain Copp, Lionel Esteban, June Then, Zahra Seyedmehdi
- Date Published: September 2019
Abstract:
We present a multidisciplinary study investigating depositional and diagenetic impacts on pore system variability in carbonate systems from the Canning Basin. With some of Australia’s only known commercially viable carbonate reservoirs the Canning ...
Magnetotelluric inversion strategies
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Ralf Schaa*, Brett Harris, Andrew Pethick
- Date Published: September 2019
Abstract:
Regional scale geophysical data is widely and publicly available in many countries. Traditionally, these data include transects that span many hundreds of line kilometres. More recently it was recognised that imaging deep three dimensional crustal st...
In-Situ Laboratory for CO2 controlled-release experiments and monitoring in a fault zone in Western Australia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Karsten Michael, Arsham Avijegon, Ludovic Ricard*, Matt Myers, Konstantin Tertyshnikov, Roman Pevzner, Julian Strand, Barry Freifeld, Mark Woitt, Marina Pervukhina, Andrew Feitz, Bobby Pejcic, Linda Stalker, Brett Harris, Jo Myers, Alf Larcher, Praveen Rachakonda, Laurent Langhi, Tess Dance, Allison Hortle, Jennifer Roberts, Martijn Woltering, Cameron White, Claudio Delle Piane
- Date Published: September 2019
Abstract:
The In-Situ Laboratory Project (In-situ Lab) entails a configuration of wells at approximately 400 m depth for monitoring the controlled release of CO2 in a fault zone at the South West Hub CCS Flagship project in Western Australia. The pr...
Machine assisted drillhole interpretation of iron ore resource evaluation holes in the Pilbara
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Daniel Wedge*, Owen Hartley, Andrew McMickan, Eun-Jung Holden, Thomas Green
- Date Published: September 2019
Abstract:
In minerals exploration, routine drilling is performed and the data logged from these drillholes, including lithological composition, assays, and downhole geophysical measurements such as natural gamma logs, are used to create geological interpretati...
The Paleozoic prospectivity of the Offshore Canning area, Australia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Said Amiribesheli*, Andrew Weller
- Date Published: September 2019
Abstract:
The recent oil, gas and condensate discoveries in the Bedout Sub-basin have triggered a change in thinking in this hitherto underexplored region. Recent drilling at Phoenix South-1 (2014), Roc-1 (2015) and Dorado-1 (2018) all found success within the...
Using zircon geochemistry to map alteration in the Gawler Craton, South Australia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Adrienne Brotodewo*, Caroline Tiddy, Diana Plavsa, Adrian Fabris
- Date Published: September 2019
Abstract:
Zircon is a refractory mineral that is able to crystallize within hydrothermal, igneous and metamorphic environments, resulting in extreme variability in its external morphology, internal textures and chemistry. The chemistry of zircon is sensitive t...
Driving the paradigm shift of near surface exploration geochemistry using ultrafine soils
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Ryan Noble, Ian Lau, Tenten Pinchand, Ravi Anand, Paul Morris
- Date Published: September 2019
Abstract:
Soils are widely used as a geochemical sample medium. These samples are sieved to <250 µm or <180 µm to remove larger gravels and coarse sand and later pulverized for analysis, but no other refinement is commonly used. Why is this the case? In tran...
Maximising value from seismic using new data and information management technologies
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Jess B. Kozman*, Matthew Holsgrove
- Date Published: September 2019
Abstract:
Geophysical data is one of the key decision support factors for successful discovery of hydrocarbons, and operators have multi-decadal inventories of survey data in key basins. Woodside has a history of exploration in Australia from 1954 and seismic ...
Analysis of Geophysical Datasets for Coastal Vulnerability and Asset Management
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Peter Eccleston, Andrew Spyrou
- Date Published: September 2019
Abstract:
As part of Western Australia’s State and Coastal Planning Policies, local councils are formulating Coastal Hazard Risk Management and Adaptation Plans (CHRMAP) with the aim of rating areas of concern with a risk level and to assist in future planni...
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...