Please note that we are still in the process of re-tagging our library items. This means searches using Author, Year, Publication Type and Title may not show complete matches.
LIST
TILES
Constraining gravity inversion with lower-dimensional seismic information: Imaging the eastern Yilgarn Craton
- Publication Name: AEGC 2021
- Authors: Mahtab Rashidifard, Jérémie Giraud, Mark Lindsay, Mark Jessell, Vitaliy Ogarko
- Date Published: September 2021
Abstract:
Integrating complementary geophysical datasets has proven to be a powerful tool for constraining the subsurface properties and also generating a model compatible with available datasets. As different geophysical surveys are designed with specific tar...
A Beautiful Sunset (Clause): Enhancing Statewide Geophysics with High Resolution Company Data
- Publication Name: AEGC 2021
- Authors: Sam Matthews
- Date Published: September 2021
Abstract:
The Geological Survey of NSW (GSNSW) is the custodian of both government and company geophysical data for NSW. In 2020 GSNSW committed to delivering an updated statewide magnetic merge combining government and open file company geophysical data, at a...
Estimation of Magnetization Direction over Wide Sheets Illustrated with a Case Study of the Earoo Magnetic Anomaly, Western Australia
- Publication Name: AEGC 2021
- Authors: Clive Foss, Phil Schmidt, James Austin
- Date Published: September 2021
Abstract:
Single profile analysis across locally planar structures such as the edges of a wide sheet cannot resolve the 3D magnetization vector but we show that from two or more profiles across differently trending edges the magnetization is uniquely defined a...
Helicopter Airborne Electromagnetics at 12.5 Hz – Western Australia Case studies
- Publication Name: AEGC 2021
- Authors: Adam Smiarowski
- Date Published: September 2021
Abstract:
Low base frequency EM provides an advantage to detection of very conductive targets or for exploration with thick conductive cover. A comparison of a 30 Hz and 7.5 Hz system showed significantly better detection to a conductive body at 400 m depth. 1...
Landscape and Pattern Similarity Analysis for gold exploration
- Publication Name: AEGC 2021
- Authors: González-Álvarez, Rondón-González, Ibrahimi, Lau et al.
- Date Published: September 2021
Abstract:
Covers geochemical landscape evolution and Pattern Similarity Analysis at tenement scale for gold exploration in Forrestania. The present study investigates the Forrestania area, located in the Yilgarn Craton, Western Australia, as a case study to co...
In situ zircon Hf-O isotopic constraints on the genesis of quartz diorite in Narusongduo Pb-Zn mining area, Tibet
- Publication Name: AEGC 2021
- Authors: Xuejing Gong, Qingtian Lü, Zhusen Yang
- Date Published: September 2021
Abstract:
Narusongduo Pb-Zn deposit is located in the southern margin of the middle Lhasa terrane. The characteristics of the magma source and genetic mechanism of the premetallogenic quartz diorite in the mining zone have not been well explained. The zircon o...
Big Data guided Digital Petroleum Ecosystems for Visual Analytics and Knowledge Management
- Publication Name: AEGC 2021
- Authors: Shastri L Nimmagadda, Andrew Ochan, Neel Mani, Torsten Reiners
- Date Published: September 2021
Abstract:
The North West Shelf (NWS) interpreted as a Total Petroleum System (TPS), is Super Westralian Basin with active onshore and offshore basins through which shelf, slope and deep-oceanic geological events are construed. In addition to their data associa...
Node quality control using drones and object detection
- Publication Name: AEGC 2021
- Authors: Jason Stephenson, Shaun Strong
- Date Published: September 2021
Abstract:
Wireless nodal surveys are now commonplace in Australian land seismic. It is essential that rigorous QC of the condition of the nodes is performed during these surveys. Acquiring footage using off-the-shelf drones can assist with this....
Modelling fluid flow in complex 3D fault networks
- Publication Name: AEGC 2021
- Authors: Thomas Poulet, Ulrich Kelka, Vincent Crombez, Marcus Kunzmann, Teagan Blaikie, Heather Sheldon, Martin Lesueur
- Date Published: September 2021
Abstract:
Faults play a critical role in controlling the movement of mineralising fluids and the resulting formation of mineral deposits. Numerical models are useful for understanding fluid pathways through faults and their host rocks. However, the heterogeneo...
Gaining value from historical AEM data
- Publication Name: AEGC 2021
- Authors: Shane Mulè, Tim Munday
- Date Published: September 2021
Abstract:
Australia is covered with a significant number of AEM surveys, primarily acquired over the last three decades. Most of these data were collected with now obsolete systems or system variants. Unfortunately, many of these historical datasets contain un...
Almost automatic geological mapping from AEM surveys
- Publication Name: AEGC 2021
- Authors: David Annetts, Juerg Hauser
- Date Published: September 2021
Abstract:
Interpretation of electromagnetic survey data for underlying geology is a common task that is complicated by the volume of data collected in airborne electromagnetic (AEM) surveys. We test a supervised learning approach for AEM data collected in the ...
Knowledge-Guided Machine Learning for Komatiite-Hosted Nickel Prospectivity Mapping
- Publication Name: AEGC 2021
- Authors: Minsu Kwon
- Date Published: September 2021
Abstract:
Thanks to the brilliant progress in machine learning, many research works have conducted data-driven mineral prospectivity mapping. However, it is challenging to integrate highly multidisciplinary geoscientific data with machine learning algorithms. ...
Yaouré Seismic Survey: Defining a Complex 3D Structural Framework with High Resolution Seismic Data
- Publication Name: AEGC 2021
- Authors: Greg Turner, Cissé Amadou, Peter Turner, Graeme Hird, Doug Jones
- Date Published: September 2021
Abstract:
Approximately 4Moz of gold have been discovered to date at the Yaouré gold deposit in Côte d’Ivoire, demonstrating the high endowment of the area despite little exploration at depths beyond 350m. With the objective of accelerating its search for ...
Inversion-based automatic processing of AEM data
- Publication Name: AECG 2021
- Authors: Gianluca Fiandaca
- Date Published: September 2021
Abstract:
Data processing is a mandatory step before inversion for any geophysical inversion, because data outliers significantly affect the inversion process, often forbidding to reach reasonable inversion models and misfits. In the processing of Airborne Ele...
Targeting Fractured Rock Aquifers using Magnetic Data
- Publication Name: AEGC 2021
- Authors: Heather Ballantyne, Karen Gilgallon, Sharon Lowe
- Date Published: September 2021
Abstract:
Fractured Rock Aquifers are an important source of water with approximately 40% of groundwater in Australia present in fractured rock. The water extracted from fractured rock aquifers is utilised in mining, irrigation, town water supply and stock wat...
Australian geomagnetic observatory network monitors space weather hazard – 180 years on
- Publication Name: AEGC 2021
- Authors: Liejun Wang, Andrew Lewis, Bill Jones, et al.
- Date Published: September 2021
Abstract:
Geoscience Australia’s geomagnetic observatory network covers one-eighth of the Earth. The first Australian geomagnetic observatory was established in 1840 in Hobart. This almost continuous 180-year period of magnetic-field monitoring provides an i...
Structural controls on late Cambrian mineralisation in the Stavely Arc
- Publication Name: AEGC 2021
- Authors: Robert Holm, Chris Cairns, Jennifer Murphy, et al.
- Date Published: September 2021
Abstract:
The middle-late Cambrian Stavely Arc forms the eastern boundary of the Delamerian Orogen in Victoria, Australia. A pulse of mineralised magmatism at ca. 500 Ma coincided with the collision of VanDieland and related deformation. Porphyry intrusion dur...
If you can’t go to the Anomaly then let the Anomaly come to you – Rubens Cage Surveys
- Publication Name: AEGC 2021
- Authors: Clive Foss, Keith Leslie, Phil Schmidt
- Date Published: September 2021
Abstract:
We use small-scale surveys in a three-axis, uniform field generating coil set (a Rubens cage) to emulate the Black Hill Norite magnetic field anomaly in South Australia. We then run further surveys with the source rotated to provide a vertical magnet...
Mineral systems and data integration as part of the foundation for the future of mineral exploration
- Publication Name: AEGC 2021
- Authors: Sandra Occhipinti, Vasek Metelka, Hassan Talebi, Dave Cole, Alex Otto
- Date Published: September 2021
Abstract:
As exploration focuses on defining new resources under large Phanerozoic basins and thick unconsolidated cover generic exploration models, following a mineral systems approach will be vital to future exploration programs. Specific ore deposit models ...
Exploring for gold using radiometrics, magnetics, and petrophysical information in the Warrawoona greenstones of the East Pilbara, Western Australia
- Publication Name: AEGC 2021
- Authors: Yvonne Wallace, Heather Ballantyne, Steve Sheppard
- Date Published: September 2021
Abstract:
The Warrawoona Gold Project is located 25 kilometres southeast of Marble Bar in the East Pilbara region of Western Australia. Key prospects include the Klondyke deposit, which forms the main share of the 1.25 Moz gold resource owned by Calidus Resour...
Optimising Land Seismic Acquisition for Modern Noise Suppression in Processing
- Publication Name: AEGC 2021
- Authors: Graeme Eastwood, Christof Stork
- Date Published: September 2021
Abstract:
Land seismic data is known to be far noisier than its marine equivalent – the questions we want to begin to address are why and is there anything that can be done about it? Noise issues with land data are often just explained by ‘poor coupling’...
Multi-scale magnetotelluric surveys – mapping from the lithosphere to the near surface for mineral systems
- Publication Name: AEGC 2021
- Authors: Wenping Jiang, Jingming Duan, Anthony Schofield, Ross C. Brodie, Andrew Clark
- Date Published: September 2021
Abstract:
Geoscience Australia has undertaken a series of integrated studies to map the footprint of mineral systems at multiple scales. We have used long-period data from the Australian Lithospheric Architecture Magnetotelluric Project (AusLAMP) to resolve la...
PERMEABILITY MODELLING USING DIGITAL ROCK IMAGES FROM MICRON SCALE
- Publication Name: AEGC 2021
- Authors: Lionel Esteban, Mojtaba Seyyedi, White Cameron, Giwelli Ausama, Valeriya Shulakova, Marina Pervukhina, Sam Jackson, Joel Sarout, Amir Aryana, Yoshitake Kato, Mai Shimokawara, Ryuta Kitamura, Fei Jiang, Takeshi Tsuji, Tatsunori Ikeda, Maxim Lebedev
- Date Published: September 2021
Abstract:
Recent technology improvements allow gaining a digital 3D replica of natural rock using fast and non-destructive tomographic techniques. Combining core-scale images from medical X-Ray with micron resolution images from micro CT scanners, natural rock...
Predicting fluid pathways in large discontinuity systems using graph theory
- Publication Name: AEGC 2021
- Authors: Ulrich Kelka Stefan Westerlund Thomas Poulet Luk Peeters
- Date Published: September 2021
Abstract:
Fracture networks and fault zones play an important role for subsurface fluid flow. Estimating the impact on the permeability field of such structures is of high interest for reservoir characterization, groundwater management, and exploration targeti...
Rock Property and Depth Mapping from magnetic data applied to greenfields exploration targeting in the Cloncurry District
- Publication Name: AEGC 2021
- Authors: David Pratt, James Austin, Clive Foss
- Date Published: September 2021
Abstract:
A new method for building a model of the rock property distribution on an unconformity surface (Pratt et al., 2019) presents new opportunities for greenfield exploration in complex geological environments. The method uses the inherent 3D information ...
An automated system for preventing hydraulic vibrator tip-over during land seismic surveys
- Publication Name: AEGC 2021
- Authors: Richard Barnwell, Tim Dean, Hagay Haviv, et al.
- Date Published: September 2021
Abstract:
Hydraulic vibrators are the preferred source for land seismic surveys. The energy from the vibrator’s signal (commonly referred to as a sweep) is transmitted into the ground via a baseplate that is coupled to the surface by loading it with the weig...
A new method for determining drill-bit signal emission time
- Publication Name: AEGC 2021
- Authors: Zixing Qin, Milovan Urosevic, Andrej Bona, Roman Pevzner, Konstantin Tertyshnikov
- Date Published: September 2021
Abstract:
In 2019, the first ever Seismic While Drilling (SWD) dataset recorded by Distributed Acoustic Sensing (DAS) fibre optic cable was acquired at the Otway Carbon Capture and Storage (CCS) site. After analysing the recorded signal, a new technique named ...
Inversion of Airborne IP data with a multi-mesh approach for parameter definition
- Publication Name: AEGC 2021
- Authors: Gianluca Fiandaca, Andrea Viezzol
- Date Published: September 2021
Abstract:
The interest on Induced Polarization in AEM data (AIP) has significantly increased in recent years, both within the research community and in the industry. However, the inversion of AIP data is particularly ill-posed, especially when spectral modelli...
Laboratory measurements of seismic properties and forward seismic modelling at the Thunderbox gold mine, in Western Australia
- Publication Name: AEGC 2021
- Authors: Andre Eduardo C. M. Souza, Stephanie Vialle, Joel Sarout, Mustafa Sari
- Date Published: September 2021
Abstract:
Laboratory measurements on 126 samples and forward seismic modelling over a 2D geologic representation of the Thunderbox gold mine, in Western Australia, were conducted to investigate the seismic response of the gold-hosting rocks and structures at t...
Transformative geophysics: Alternatives to the reduction-to-pole transformation of magnetic data
- Publication Name: AEGC 2021
- Authors: Richard Smith
- Date Published: September 2021
Abstract:
Magnetic data is difficult to interpret due to the bipolar nature of the field and the fact that the amplitude and phase of the response varies depending on the inclination of the Earth’s field and the dip of magnetic bodies. The reduction to the p...