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Mapping sub-volcanic geology using magnetic data
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Irena Kivior, Stephen Markham*, Shiferaw Damte
- Date Published: September 2019
Abstract:
Volcanic layers within sedimentary basins cause significant problems for petroleum exploration because the attenuation of the seismic signal masks the underlying geology.
A test study was conducted for the South Australia Government to map t...
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...
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....
The Mineral Systems Atlas — delivering greater value from precompetitive geoscience data
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: S. Morin-Ka*, T.J. Beardsmore, P. Duuring, J. Guilliamse, L. Burley
- Date Published: September 2019
Abstract:
The Mineral Systems Atlas and Guide are recent online systems developed and curated by the Geological Survey of Western Australia (GSWA). The objective of the Atlas and Guide is to more effectively deliver relevant precompetitive geoscience informati...
The Pilbara Mesoarchean conglomerate gold versus Quaternary colluvial gold: are they genetically linked?
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Sam Spinks, Mark Pearce, Margaux Le Vaillant, David Fox
- Date Published: September 2019
Abstract:
Recently discovered nugget gold (Au) in boulder conglomerate between the Mesoarchean West Pilbara Superterrane basement and the overlying volcano-sedimentary stratigraphy of the Neoarchean Fortescue Group in Western Australia have drawn comparisons w...
A 10 kN portable electromagnetic vibrator for near-surface studies
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Tim Dean*, Hoang Nguyen
- Date Published: September 2019
Abstract:
In a previous paper, we described how a small electromagnetic vibrator could be manufactured using commercially available components for less than US$2,000. The basis of the unit was a set of four low-frequency actuators designed for use in home-thea...
Geophysics used to help find good quality groundwater in the Vientiane Plain, Lao PDR
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Michael Hatch*, Okke Batelaan, Eddie Banks, Somphasith Douangsavanh
- Date Published: September 2019
Abstract:
Lao PDR is a poorly developed country, with a large rural population which relies heavily on agricultural production. The Vientiane Plain is one of the most important and largest agricultural production areas with plans to expand the area under irrig...
The effects of seismic anisotropy on mining seismology
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Andrew King
- Date Published: September 2019
Abstract:
Microseismics – the detection and characterisation of mining-induced fracture events in the rockmass – is widely used to improve geotechnical understanding of the rockmass response to mining, and for hazard assessment of rockbursts and roof falls...
Formation of Very Thick Permian Coal Seams, Cooper Basin, Australia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Elena Alganaeva, Greg Smith
- Date Published: September 2019
Abstract:
The Weena Trough and the Milpera Depression in the SW Cooper Basin contains some unusually thick Permian coal seams. Their development is linked to the Late Carboniferous-Early Permian glacial palaeoclimates, the slow subsidence resulting from their ...
What lies beneath? Prospecting for Hydrocarbons under a metamorphic allochthon, Timor-Leste
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: M. Bucknill*, Brendan Duffy, Jason Noble, Alex Berkovitch
- Date Published: September 2019
Abstract:
The structural context and Australian versus Asian affinity of regional outcrop of Timor’s Lolotoi Metamorphic Complex are critical to the interpretation of hydrocarbon prospectivity but are obscured by complex geology and still strongly debated. T...
A statewide 3D geological model for New South Wales
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Edward Stolz, Giovanni Spampinato, John Davidson
- Date Published: September 2019
Abstract:
The Geological Survey of New South Wales is building a statewide 3D geological model comprising a series of interlocking province-scale models and a 3D statewide fault network. The model is being developed in conjunction with the New South Wales Seam...
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...
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...
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.” ...
All that wobbles isn’t necessarily azimuthal anisotropy
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Helen Debenham*, Jennifer Badry, Mohamed Megebry
- Date Published: September 2019
Abstract:
Onshore 3D seismic data is often acquired with rich azimuth coverage by utilising orthogonal shooting (or cross-spread) layouts. This means that azimuthal anisotropy, if present, can be readily observed and its effects on the data can be quantified a...
Current and future multicomponent towed streamer design
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Nicolas Goujon, Susanne Rentsch*, Leendert Combee, Fabien Guizelin, Khairul Faizi Ahmad
- Date Published: September 2019
Abstract:
The towed streamer market is moving towards the widespread use of multicomponent streamers. This type of streamer contains hydrophones and particle motion sensors which are used to carry out receiver-side deghosting of the data. The main source of n...
Sensitivity-based data reduction of large 3D DC/IP surveys
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Sarah G.R. Devriese, Robert G. Ellis, Ken E. Witherly*
- Date Published: September 2019
Abstract:
In this paper, we present an algorithm based on the sensitivity of the data to the model space to reduce the large amount of data commonly collected during 3D DC/IP surveys to only those most relevant and important to the model space. The sensitivity...
DAS seismic monitoring of the shallow CO2 controlled-release experiment at the South West Hub In-Situ Laboratory
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: K. Tertyshnikov*, R. Pevzner, B. Freifeld, L. Ricard, A. Avijegon
- Date Published: September 2019
Abstract:
Carbon Capture and Storage (CCS) remains one of the most viable short-term options for halting the increase in atmospheric concentration of greenhouse gases. Assurance of storage safety is an essential part of the process required to maintain a commu...
What lies beneath? A reflection on the porphyry copper exploration model
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Ken E. Witherly*
- Date Published: September 2019
Abstract:
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 ...
Using machine learning to predict total organic content – case study: Canning Basin, Western Australia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Russell Menezes*
- Date Published: September 2019
Abstract:
Total Organic Content (TOC), one of the most important parameters for sweet spot mapping of unconventional plays is estimated using a RockEval Pyrolysis technique. This process being expensive and time-consuming, the sampling rate per well is very lo...
Recent advances in nodal land seismic acquisition systems
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Tim Dean*, Denis Sweeney
- Date Published: September 2019
Abstract:
Early on in the history of seismic acquisition the advantages of being able to acquire data without the impediment of cables was identified. Despite the introduction of numerous systems since the 1970s nodal land acquisition systems have only relativ...
Seismic evidence for seal and reservoir in the Late Cretaceous Ceduna Delta, Great Australian Bight
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Ben Tredrea*, Phillip Horton
- Date Published: September 2019
Abstract:
The Ceduna Sub-Basin contains a large and underexplored Jurassic - Cretaceous rift, located within the Great Australian Bight Basin. Limited exploration to date has targeted the Late Cretaceous Hammerhead and Tiger Super sequences (SS) of the Ceduna ...
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...
“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...
Developing the Butcherbird high purity manganese project
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Justin Brown
- Date Published: September 2019
Abstract:
Element 25 Limited is developing the Butcherbird High Purity Manganese Project located approximately 130km south of Newman in the Pilbara region of Western Australia.
The project hosts Australia’s largest onshore manganese deposit containi...
Scale reduction using magnetotellurics – a mineral exploration example from the Olympic Domain, South Australia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Stephan Thiel*, Kate Robertson, Wenping Jiang
- Date Published: September 2019
Abstract:
We present results of 334 ultra-wide band MT stations across an area of 100 km x 100 km in the prospective eastern Gawler Craton. The survey area is situated ~100 km south of the supergiant Olympic Dam IOCG deposit, across an area of several IOCG dep...
Frequency and current analysis of non-linear electrical effects in mineralised rocks
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Alan Oertel*, Robert White, Steve Collins, Keith Leslie, Ben Spyridis
- Date Published: September 2019
Abstract:
Available electrical geophysical methods are specialised in detecting conductive and chargeable targets, particularly sulphide deposits. A key challenge facing Induced Polarisation (IP) and Transient Electromagnetism (TEM) methods is that often a cha...
Supporting data-driven exploration in NSW
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Keith Gates
- Date Published: September 2019
Abstract:
NSW legislative changes in 2016 mean that from 1 June 2021, confidential mineral exploration company reports will become open file 5 years after submission. This will result in a large amount of previously confidential data being released on 1 June 2...
Legacy data – hidden opportunity
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Keith Reeves*
- Date Published: September 2019
Abstract:
As oil prices have rebounded, operators look for new exploration opportunities. A new paradigm, however, is the increased focus on investor return rather than relentless expansion at all costs. This value-focused exploration looks for cost effective ...
The lithospheric structure and deep processes of the Mesozoic mineral systems in east China: constrained from integrated geophysical data
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Qingtian Lü*, Guixiang Meng, Jiayong Yan, Jinhua Zhao, Xuejing Gong
- Date Published: September 2019
Abstract:
Financed by the SinoProbe, a national collaborative multidisciplinary Earth science research project in China, the authors has conducted multi-scale and integrated geophysical exploration across the middle and lower reaches of Yangtze Metallogenic Be...