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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 ...
Geophysical investigation of mine waste in the King River Delta, Macquarie Harbour, Tasmania
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Matthew J. Cracknell*, Sibele C. Nascimento, Wei Xuen Heng, Anita Parbhakar-Fox, Thomas A. Schaap
- Date Published: September 2019
Abstract:
The majority of discharged mine waste from the Mt Lyell copper mine was deposited as deltaic sediments at the mouth of the King River, Macquarie Harbour, Tasmania. These waste materials are composed of sulphide bearing tailings and are a significant ...
The seven rocks that made Australia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Marita Bradshaw
- Date Published: September 2019
Abstract:
Key geological events of the last 4 billion years have shaped Australia’s present day environment, economy and society; and a limited number of rocks can be chosen to represent this history. Pilbara banded iron formations and Permian coal measures ...
Lithology characterisation of the roof and floor of the Moranbah measures coal seam using post-stack and pre-stack seismic inversion
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Margarita Pavlova*
- Date Published: September 2019
Abstract:
3D seismic technology has become a popular exploration and development tool among coal mining companies in Australia in the last ten years. Traditionally the main use of these seismic data is to inform the mine of the structural features such as faul...
The genesis of Carlow Castle: A unique Australian orogenic Cu-Co-Au deposit in the Archean Pilbara Craton
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: David Fox, Sam Spinks, Mark Pearce, Margaux Le Vaillant, Robert Thorne, Milo Barham, Mehrooz Aspandiar
- Date Published: September 2019
Abstract:
Carlow Castle is a Cu-Co-Au deposit situated within the western Pilbara Craton of Western Australia. Whilst Carlow Castle is the oldest discovered copper deposit in the Pilbara region, having been initially discovered in 1882, no detailed study of th...
PhotonAssay™ – Efficient & bulk gold analysis in the modern world
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Chenoa Tremblay*, Gary Wheeler, Anthony Oteri
- Date Published: September 2019
Abstract:
The PhotonAssayTM Max is an instrument utilising high-energy X-rays but reimaged for the modern world with full robotics and ability to keep up with the high demands of mining. Since Pierre Gy’s introduction of sampling theory into the g...
Geophysics and neural networks: learning from computer vision
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Mark Grujic, Liam Webb, Tom Carmichael
- Date Published: September 2019
Abstract:
The rapid advancement of computer vision is changing the way many industries approach image analysis. Object detection, image segmentation, textual characterisation and other related processes are helping people extract more meaningful information an...
Full Spectrum Falcon – Measuring wide broadband airborne gravity data
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Chris van Galder
- Date Published: September 2019
Abstract:
Full Spectrum Falcon combines a Falcon AGG system and an sGrav AG system to deliver a low noise gravity dataset across all the exploration wavelengths. The noise of the vertical gravity data from an AGG system will increase as its wavelength increase...
Complete gas-brine imbibition relative permeability curves increase confidence in gas field performance
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: M. Ben Clennell*, Cameron White, Ausama Giwelli, Matt Myers
- Date Published: September 2019
Abstract:
The standard methods used for measuring gas relative permeability during brine imbibition have been found to be inadequate as the resulting curves are incomplete and may include invalid points. CSIRO, together with an industry partner, developed new ...
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...
Reservoir flow modelling to constrain CO2 plume-fault interaction. South West Hub Carbon Capture and Storage Project, WA
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Laurent Langhi*, Ludovic Ricard, Julian Strand
- Date Published: September 2019
Abstract:
In order to improve the South West Hub Carbon Capture and Storage (SW Hub) site characterisation and reduce uncertainties around CO2 capacity, injectivity and containment, conceptual fault hydrodynamic models are defined and numerical simulations are...
Exploring for the future: new U-Pb geochronology for the South Nicholson region and implications for stratigraphic correlations
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Jade Anderson*, Chris Carson, Chris Lewis, Andrew Cross, Lidena Carr, Paul Henson, Natalie Kositcin
- Date Published: September 2019
Abstract:
Zircon and xenotime U-Pb SHRIMP geochronology was conducted on samples from the South Nicholson Basin, and western Mount Isa Orogen. These samples were collected from outcrop and core from the Northern Territory and Queensland. The age data indicate ...
The role of geochemistry in understanding mineral systems
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Carl W. Brauhart
- Date Published: September 2019
Abstract:
The mineral system concept is a valuable framework to use for mineral exploration because it allows the user to interpret their data with more flexibility than for traditional ore deposit models. Better context is provided by a well-constructed miner...
Sub-basin architecture of the Proterozoic McArthur Group, southern McArthur Basin
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Teagan Blaikie*, Marcus Kunzmann
- Date Published: September 2019
Abstract:
The Proterozoic McArthur Basin, located in the north-east Northern Territory, preserves several large sediment hosted Zn-Pb-Ag mineral deposits. These deposits are hosted within sub-basins that developed during deposition of the McArthur Group. Geoph...
Modelling the Palaeozoic tectonic evolution of the Lachlan Orogen
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Thomas Schaan, Sebastien Meffre, Joanne Whitakker, Matthew Cracknell, Michael Roach
- Date Published: September 2019
Abstract:
The Lachlan Orogen’s mineral wealth is a direct result of tectonic processes that took place in the early Palaeozoic, but the exact nature and timing of events is widely contested. Here, we apply new methods of deforming tectonic reconstruction mod...
Experimental acid and (sc)CO2 reactions of Roseneath, Epsilon and Murteree gas shales: Opening or closing of gas accessible pores and metal release to water
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: J.K. Pearce, T. Blach, G. Dawson, Y. Melnichenko, G. Southam, S.D. Golding, J. Bahadur, D. Paterson
- Date Published: September 2019
Abstract:
Shale oil and gas is of recent interest in Australia, and the Roseneath, Epsilon and Murteree (REM) shales of the Cooper Basin, Australia, are unconventional gas targets. Shales have a high proportion of porosity in the sub-micron scale and hydraulic...
Characterisation of the Neoarchean Fortescue Group Stratigraphy – Integrated downhole geochemical mineralogical correlation from new diamond drilling
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Jessica Stromberg*, Sam Spinks, Mark Pearce
- Date Published: September 2019
Abstract:
The flood basalts and gold-bearing basal sediments of the 2775-2629 Ma Fortescue Group unconformably overlie the Mesoarchean West Pilbara Superterrane to the south of Karratha, Western Australia. Fresh exposures of the sedimentary units are lacking a...
Using recursive inversion as input for gross-rock volume extraction from lithology prediction volumes: How bad can it be?
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: James Shadlow*
- Date Published: September 2019
Abstract:
Reserves and Resources can be directly estimated by using seismic lithology prediction volumes generated from AVO inversion, calibrated to wells, to estimate sand rock volumes within a stratigraphic interval. However, high quality AVO inversion data ...
The discovery and geology of Sinclair, Australia’s first caesium deposit
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: David J. Crook*, Stuart T. Kerr, Jess A. Booth, Nigel W. Brand, Russell Panting
- Date Published: September 2019
Abstract:
The Sinclair Caesium Deposit, discovered in 2016 by Pioneer Resources Limited, is Australia’s first mining operation to commercially extract the caesium-rich mineral pollucite. Economic caesium deposits are extremely rare, with only three mining op...
New insights on the Upper Cretaceous Tiger Supersequence of the Bight Basin from International Ocean Discovery Hole U1512
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Carmine C. Wainman*, Gabriel Tagliaro, Peter J. McCabe
- Date Published: September 2019
Abstract:
The Bight Basin is considered to be one of Australia’s most prospective petroleum regions. However, the sparsity of geologic data means that potential petroleum plays in the basin have yet to be firmly established. In late 2017, International Ocean...
Palaeogeographic evolution of the Triassic succession, central North West Shelf
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Steve Abbott*, Claire Orlov, George Bernardel, Nadege Rollet, Duy Nguyen, Merrie-Ellen Gunning, Chris Nicholson
- Date Published: September 2019
Abstract:
Triassic deposition on the central North West Shelf (CNWS) mainly took place in a large depocentre comprising the Beagle Sub-basin and the Exmouth Plateau, and a small depocentre located within the Rowley Sub-basin. Thermal subsidence prevailed but s...
3D inversion of electromagnetic logging-while-drilling data
- Publication Name: Australasian Exploration Geoscience Conference
- Authors: David Marchant*, Nigel Clegg, Luke Rawsthorne, Jari Kunnas
- Date Published: September 2019
Abstract:
Electromagnetic logging while drilling is commonly used to infer information about the electrical properties around the wellbore and to aid in geosteering. Data from modern tools, which combine multiple transmitter and receiver orientations and offse...
Estimating interpretation uncertainty from magnetotelluric inversion
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Janelle Simpson*, Graham Heinson
- Date Published: September 2019
Abstract:
We present a depth to basement case study which incorporates knowledge of magnetotelluric inversion uncertainty into the final interpretation.
Inversion with Occam2D and rj-McMC was conducted for over 1600 magnetotelluric sites from the Isa ...
Passive seismic horizontal to vertical spectral ratio (HVSR) surveying to help define bedrock depth, structure and layering in shallow coal basins
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: David Stannard, Jayson Meyers, Thomas Dronfield*
- Date Published: September 2019
Abstract:
Trial passive seismic HVSR survey lines were carried out in the north-western part of the Wilga sedimentary basin in Western Australia, which is a small and shallow isolated sub-basin to the Perth Basin, sitting above rifted Archaean granite-gneiss b...
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 multi-disciplinary approach for defining nickel and gold mineral systems; Halls Creek Orogen, Western Australia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Fariba Kohanpour*, Sandra Occhipinti, Mark Lindsay, Weronika Gorczyk
- Date Published: September 2019
Abstract:
Geodynamic models, geological-geophysical interpretations, and isotope analysis illustrate that there are links between the nickel and gold mineral systems in the Halls Creek Orogen, Western Australia. Whole-rock Nd and Ar-Ar analysis of rocks throug...
The geological characteristics, geochemical signature and geophysical expression of porphyry copper-(gold) deposits in the circum-Pacific region
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Steve Garwin
- Date Published: September 2019
Abstract:
Porphyry deposits of the circum-Pacific region contain a large amount of the world’s copper, molybdenum and gold. These deposits are formed from calc-alkaline and potassic magmas characterized by varying oxidation states (fO2), which contribute to ...
Depth conversion and seismic inversion of the Scarborough gas field
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Joseph Kremor*, Manish Agarwal, Paul Spaans, Ung Sing Wong
- Date Published: September 2019
Abstract:
This paper shows how the application of advanced seismic processing, innovative seismic to well matching techniques and subsequent seismic inversion have resulted in a significant improvement when compared with seismic reservoir characterisation resu...
New insights into the offshore Canning Basin using a seamless onshore/offshore stratigraphic model
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Christopher Yule*, James Daniell
- Date Published: September 2019
Abstract:
The Canning Basin in Western Australia is classified as a frontier basin. Of the 345 wells drilled onshore, only eight have intercepted small commercial hydrocarbon deposits. The offshore Canning Basin is one of the world’s most underexplored Paleo...
Electromagnetic and electrical methods applied to mapping coked coal – A case study from the Bowen Basin, Eastern Australia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Jonathan Lowe*, James Reid, Eric Battig, Scott Napier, Dan Eremenco
- Date Published: September 2019
Abstract:
In coal mining it is important to know if localised areas of coal have been rendered worthless through direct contact with volcanic intrusions. To avoid dilution, accurate coked coal boundaries are traditionally mapped by drilling....