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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...
Combined potential field and airborne electromagnetic interpretation to unravel the geological history of the Curaca Valley Region, Bahia, Brazil
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: P. Letelier, S. Napier, J. Reid, P. Mejia
- Date Published: September 2019
Abstract:
Integrated geological-geophysical interpretation offers a robust way to answer geoscientific questions by providing better and faster decisions on where to explore in a regional context, and ultimately on local-scale targets. In particular, regional ...
Geological insights of Northern Australia’s AusAEM airborne EM survey
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Yusen Ley-Cooper, Ian Roach, Ross C. Brodie
- Date Published: September 2019
Abstract:
Airborne electromagnetic data generated by the AusAEM Survey are shown to map mineral deposit host rocks and regional geological features within the AusAEM Survey area. We have developed new functionality in Geoscience Australia’s sample-by-sample ...
Mapping the hydrostratigraphy and groundwater salinity of the Ord Bonaparte plains from AEM and NMR data
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Kok Piang Tan*, Neil Symington, Chris Harris-Pascal, Larysa Halas, Ken Lawrie
- Date Published: September 2019
Abstract:
This study is part of the groundwater investigations of the Ord Bonaparte plains in the East Kimberley region of Western Australia. A key project aim is to establish a spatial hydrostratigraphic framework to better understand the hydrogeology....
Are stromatolites in the northern Perth Basin following the End Permian mass extinction?
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Liam J. Olden*, Jane Cunneen, Milo Barham, Hugo K.H. Olierook, Gregory Smith, Erica Suosaari
- Date Published: September 2019
Abstract:
Following the End Permian Mass Extinction (EPME) event, global stromatolite distributions rapidly increased. There are three documented examples of stromatolites occurring in intracontinental settings following the EPME; Greenland, Madagascar and wes...
A high-resolution seismic investigation for shallow iron ore
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Ashley Grant*, Sasha Ziramov, Milovan Urosevic
- Date Published: September 2019
Abstract:
A high-resolution shallow seismic investigation involving a 3D-3C, 3D-1C, 19 zero-offset ZVSP and a 3D SWD was undertaken in an effort to image a subsurface iron ore deposit. The same project area was used in all of the surveys and was located in nor...
Time lapse in-hole electrical resistivity surveying during a shallow release of CO2 gas: Harvey, Western Australia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Brett Harris*, Alex Costall, Hoang Nguyen, Karsten Michael, Ludovic Ricard, Barry Freifeld, Arsham Avijegon, Andrew Pethick
- Date Published: September 2019
Abstract:
An in-hole electrode array was installed and cemented behind a fibreglass casing in a vertical monitoring well as part of an in-situ laboratory test for CO2 migration in a shallow fault zone in Harvey, Western Australia. The array consiste...
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...
Insight from AIP modelling of VTEM ET data from Colorado
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Andrea Viezzoli, Burke Minsley, Antonio Menghini
- Date Published: September 2019
Abstract:
Portions of the VTEM ET dataset from the Upper East River survey in Colorado were strongly affected by airborne induced polarization (AIP) effects. Ignoring AIP contributions to the data leads to difficulties in geological interpretation and loss of ...
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...
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...
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...
Handling noise in AEM inversion – implications for subsurface characterisation
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Shane Mulè, Camilla Soerensen, Tim Munday
- Date Published: September 2019
Abstract:
Noise is a fundamentally limiting factor for what aspects of the subsurface can be imaged using an AEM system. This paper compares the use of two inversion techniques and two different methods of estimating data noise, to determine how the choice of ...
Quantified Detection of Carbonate Cementation in Sandstones using Standard Wireline Log Data
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Mark Bunch
- Date Published: September 2019
Abstract:
Carbonate cemented zones were identified within the lower Paaratte Formation of the eastern Otway Basin, Victoria, in southeastern Australia. A wireline log model trained on these zones can predict carbonate cementation within Late Cretaceous to Pa...
Log dependent approach to predict reservoir facies and permeability in a complicated shaly sand reservoir
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Abdelrahman Elkhateeb*, Reza Rezaee, Ali Kadkhodaie
- Date Published: September 2019
Abstract:
The prediction of facies and permeability in complicated reservoirs represents a major challenge that necessitates the usage of advanced statistical techniques. A new approach is presented in this paper to generate a log based continuous facies log a...
Deep neural networks for 1D impedance inversion
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Vladimir Puzyrev*, Anton Egorov, Anastasia Pirogova, Chris Elders, Claus Otto
- Date Published: September 2019
Abstract:
We investigate the applicability of different types of deep neural networks for the estimation of subsurface properties from seismic data. The pre-trained networks can predict velocity models from new data in a few milliseconds, which makes this data...
Subsurface characterisation for future CCS applications using uncommon 3D surface and borehole seismic survey geometries at Harvey, Western Australia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Milovan Urosevic, Sasha Ziramov*, Roman Pevzner, Konstantin Tertyshnikov, Sinem Yavuz, Anton Egorov, Andrej Bona, Valeriya Shulakova, Dominique Van Gent
- Date Published: September 2019
Abstract:
Within the South West Hub Project we conducted a comprehensive integrated study to map the fault and fracture network surrounding the Harvey 3 well to obtain an understanding of their propensity to act as conduits for the injected CO2. Her...
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 ...
Discovering and using geophysical data in the 21st century
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Alex Ip*, Andrew Turner, Yvette Poudjom-Djomani, Ross C. Brodie, Phillip Wynne, Kelsey Druken, Neil Symington, Carina Kemp
- Date Published: September 2019
Abstract:
Large geophysical data has traditionally been difficult to manage in a consistent, open, and efficient manner. The demands of modern, large-scale computing techniques, coupled with the need for sound data and metadata management, mean that establishe...
Observations of geophone spurious resonance
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Steve Hearn*, Shaun Strong, Andrew Kinmont
- Date Published: September 2019
Abstract:
A detailed understanding of the frequency response of geophones is critical for the design and quality control of broadband seismic surveys. We illustrate a pragmatic methodology for accurate identification of geophone spurious resonances. We include...
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. ...
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...
Multi-physics, inter-disciplinary approaches for groundwater system investigations and hydrogeological assessments in Northern Australia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Ken Lawrie, Des Yinfoo, Niels B. Christensen, Kokpiang Tan, Neil Symington, Donna Cathro, Larysa Halas, Stephen Hostetler, Chris Harris-Pascal, Andrew McPherson, Christian Seiler, John Wischusen
- Date Published: September 2019
Abstract:
The development of Northern Australia has been identified as a national priority, with water availability being fundamental to economic development. Surface water options are limited hence identification of new groundwater resources and water banking...
Basin-scale fluid-flow models of the McArthur River mineral system – Constraints from geochemistry, geophysics and sequence stratigraphy
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Peter Schaubs*, Heather Sheldon, Teagan Blaikie, Marcus Kunzmann, Susanne Schmid, Sam Spinks
- Date Published: September 2019
Abstract:
This abstract reports on the insights gained from numerical simulations which have been used to place constraints on the nature of critical geological processes responsible for sediment-hosted base metal mineralisation in the southern McArthur Basin,...
Direct imaging of alteration with high-resolution hard-rock 3D seismic data at the Darlot Gold Mine
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: G. Hird*, W. Turner
- 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 within the Yilgarn Craton in Western Australia...
Rock physics for multiscale, multiphysics data assimilation from molecular to laboratory scale
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Klaus Regenauer-Lieb*, Thomas Blach, Ankita Singh, Amalia Halim, Stuart Clark, Christoph Schrank
- Date Published: September 2019
Abstract:
Exploration geophysics and reservoir production strategies rely on a robust knowledge of reservoir petrophysical properties and their uncertainties. We have developed a new approach that not only quantifies uncertainties of petrophysical properties i...
Hyperspectral imaging of sedimentary iron ores – beyond borders
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Lionel C. Fonteneau*, Brigette Martini, Don Elsenheimer
- Date Published: September 2019
Abstract:
Banded iron formations (BIFs) and granular iron formations (GIFs) are the two primary types of sediment hosted iron ore deposits and provide the primary source for iron, globally. Although both deposit types are comprised of bedded chemical sediments...
Using Corona to test NMR response of iron ore chip samples
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: Mark Downey, Kazek Trofimczyk*
- Date Published: September 2019
Abstract:
The application of Nuclear Magnetic Resonance (NMR) to investigate the distribution of moisture in materials has not normally been applied to iron ores due to the magnetic properties of iron. However recent test work on blast hole chip samples of iro...
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...
Update on the geophysical expression of the Abra sedimentary replacement Pb-Ag-Cu-Au deposit, Western Australia
- Publication Name: Australasian Exploration Geoscience Conference 2019
- Authors: David Stannard*, Jayson Meyers, Ed Turner, Angelo Scopel
- Date Published: September 2019
Abstract:
The Abra sedimentary replacement Pb-Ag-Cu-Au deposit is located in the Paleoproterozoic Edmund Basin, 900km NNE of Perth. Mineralisation at Abra has no surface expression and the deposit was discovered in 1981 by drill testing coincident magnetic and...