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Maximising the value of 2D hard rock seismic acquisition at Escondida Porphyry Copper Mine
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Heather Schijns*, Gabriel Madero
- Date Published: September 2019
Abstract:
In mining areas with limited previous seismic acquisition, 2D seismic lines are often acquired to determine viability of the method and optimal survey parameters in advance of a more comprehensive 3D survey. Consideration of the design and acquisitio...
Groundwater applications of towed TEM in diverse geology at farm scale
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: David Allen
- Date Published: September 2019
Abstract:
Vehicle towed transient TEM systems have opened up possibilities of comprehensive mapping of groundwater resources at farm scale. At this scale airborne TEM usually has too much setup cost and conventional TEM conducted on foot is usually too lab...
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...
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...
The structural architecture of the central North West Shelf – insights from regional scale mapping of the Triassic succession
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Claire Orlov*, Chris Nicholson, George Bernardel, Steve Abbott, Nadege Rollet
- Date Published: September 2019
Abstract:
The central North West Shelf has been the focus of a regional mapping program by Geoscience Australia targeting the Triassic succession. Resulting updates to the regional structural understanding are presented, showcasing variations in structural sty...
A framework for multi-sensor image segmentation using fuzzy collaborative clustering
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Tauqir Moughal*, Abeer Mazher, Irina Emelyanova, Fusheng Yu
- Date Published: September 2019
Abstract:
The massive availability of remote sensing data and advances in data analytics have improved the capacity for mapping land cover and subsurface.
Specifically, in case of multi-sensor remote sensing images, the independent analysis of each im...
Recent advances on the inversion of deep directional borehole resistivity measurements
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Vladimir Puzyrev*, David Pardo, Víctor Calo, Carlos Torres-Verdín
- Date Published: September 2019
Abstract:
We describe our latest developments on the inversion of subsurface electrical resistivity from deep directional borehole resistivity measurements. Two different methods are introduced for fast inversion of tri-axial induction measurements with multip...
VMS and Ni-Cu exploration using an integrated geophysical and drilling method
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Flemming Effersø*, Errol Smart, Russell Mortimer
- Date Published: September 2019
Abstract:
This case study illustrates the use of an exploration method that leverages modern exploration techniques for deep-seated VMS and Ni-Cu deposits in a 978 km2 survey area in the highly prospective Areachap Belt, South Africa....
Utilising potential field modelling to better inform on the 3D structural architecture in regions of excellent structural control
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Robin Armit*, Teagan Blaikie, Peter Betts, Laurent Ailleres
- Date Published: September 2019
Abstract:
Information in the third dimension is intrinsic to potentialfield data. Potential-field interpretations and modelling can provide crucial regional and sub-surface geological constraints in areas considered to be structurally ‘well’ understood. T...
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...
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...
Rapid field identification of LCT pegmatite mineralogy: Application of portable Raman spectroscopy
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Sophie Perring*, Nigel Brand
- Date Published: September 2019
Abstract:
Rapid field identification of mineralogy is critical for exploration and ore extraction. For LCT pegmatites, a significant challenge is presented as many dominant minerals are visually similar and many of these minerals cannot be identified by common...
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...
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...
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...
Transforming an abandoned well into a permanent downhole receiver array: Harvey-3 case study
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Ludovic Ricard, Roman Pevzner, Evgenii Sidenko*, Konstantin Tertyshnikov, Sandeep Sharma, Dominique Van Gent, Roman Isaenkov
- Date Published: September 2019
Abstract:
Fibre optic sensing is an emerging technology enabling reliable long term monitoring and surveillance of the subsurface. In this contribution, we detail the first Australian installation of a fibre optic sensing system as part of a stratigraphic well...
Faster play-based exploration, Petrel Sub-basin, Australia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Laura Phillips*, Paul Massara, Kenneth McCormack
- Date Published: September 2019
Abstract:
The Paleozoic extensional Petrel Sub-basin within the Bonaparte Basin, Australia is relatively underexplored. Historical two-dimensional seismic data and 59 exploration wells provide a substantial residual sub-surface uncertainty. Woodside’s WA-522...
Triassic petroleum systems on the central North West Shelf – Learnings from the greater Phoenix area seismic mapping and geochemical studies
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Nadege Rollet*, Emmanuelle Grosjean, Dianne Edwards, Richard Kempton, Duy Nguyen, Steve Abbott, Claire Orlov, George Bernardel, Chris Nicholson
- Date Published: September 2019
Abstract:
The greater Phoenix area in the Bedout Sub-basin has experienced recent exploration success on Australia’s North West Shelf (NWS). Oil and gas discoveries in the Triassic reservoirs of the Keraudren Formation and Locker Shale have revived interest ...
Colour amplifies relief shading
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Peter Kovesi
- Date Published: September 2019
Abstract:
Relief shading has long been recognised as being an effective way of presenting data. However, the interaction of relief shading and colour is perhaps not widely understood, and many software packages do not combine shading and colour in a physically...
Gold metallogeny of the northern Capricorn Orogen
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Imogen Fielding, Simon Johnson
- Date Published: September 2019
Abstract:
The timing and distribution of gold mineralization in Proterozoic orogens is influenced by crustal architecture which is often established long before gold mineralization occurs. Gold occurrences in such settings are commonly associated with crustal-...
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...
Mineralization signatures of the magnetite-dominant Acropolis prospect, Olympic Dam IOCG district, South Australia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Marija Dmitrijeva*, Cristiana L. Ciobanu, Kathy J. Ehrig, Andrew V. Metcalfe, Max R. Verdugo-Ihl, Jocelyn McPhie, Nigel J. Cook
- Date Published: September 2019
Abstract:
The Acropolis prospect is a vein-style magnetite (±apatite ±hematite) system located ~20 km southwest from the giant Olympic Dam iron-oxide copper gold (IOCG) deposit, South Australia. A whole rock dataset comprising 4,864 core samples from fourtee...
West Australian gold resources: crisis or hubris?
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Julian Vearncombe*
- Date Published: September 2019
Abstract:
Criticism of the exploration and mining industry for failing to find enough new deposits and open new mines is misplaced. Significant growth in the size of gold Resources on many mines of the Yilgarn Craton has occurred well after the deposit was dis...
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...
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...
A preliminary assessment of uncertainties attributed by analysts, array types and processing algorithms for microtremor observations, via the COSMOS Blind Trials
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Michael W. Asten*, Alan Yong, Sebastiano Foti, Koichi Hayashi, Antony Martin, William J. Stephenson, John F. Cassidy, Jacie Coleman
- Date Published: September 2019
Abstract:
The blind trial studies conducted for the 2006 3rd International Symposium on the Effects of Surface Geology (Grenoble, France) and the 2015 Intercomparison of Methods for Site Parameter and Velocity Profile Characterization (InterPACIFIC) Workshop (...
Geophysical expression of the Meyers Crater, a new meteorite impact crater discovered in the Coolgardie Goldfield of Western Australia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Jayson Meyers*, Sharna Riley, Wesley Groome
- Date Published: September 2019
Abstract:
Detailed airborne electromagnetic (VTEM), gravity and passive seismic HVSR surveying, followed up by RC and diamond drilling, has identified an isolated circular and geologically young meteorite impact crater filled with sediments and located next to...
Sea level controls on buried geomorphology within the Swan River estuary during the Late Quaternary
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Giada Bufarale*, Mick O’Leary, Alexandra Stevens
- Date Published: September 2019
Abstract:
A high-resolution seismic survey was carried out across the metropolitan reach of the Swan River (Perth, Western Australia) to investigate its Late Quaternary sub-surficial geomorphology. Shallow imaging data, integrated with sediment cores, pre-exis...
What you need to know to drill a high pressure, high temperature well
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Jonathan Slade*
- Date Published: September 2019
Abstract:
The challenges in drilling a high pressure and high temperature (HPHT) well are unique to every opportunity. The key to successfully drilling an HPHT well is to utilise the appropriate people, technology and design at the appropriate time. To do this...
The geology of the Brecknock, Calliance and Torosa gas fields, Browse Basin, Western Australia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Robert Seggie, Simon Lang, Neil Marshall
- Date Published: September 2019
Abstract:
The Brecknock, Calliance and Torosa (BCT) gas fields are located offshore approximately 425 km north of Broome, Western Australia. The fields have undergone an extensive appraisal drilling and seismic acquisition campaign between 2005-2012, with the ...