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Ground Penetrating Radar Investigation as Part of a Multidisciplinary Archaeological Project, The Plain of Jars, Lao PDR.
- Publication Name: AEGC 2021
- Authors: Jamie Speer, Dr. Dougald O’Reilly, Dr. Louise Shewan
- Date Published: September 2021
Abstract:
The Ground Penetrating Radar (GPR) investigation was undertaken within the multidisciplinary team undertaking the “Plain of Jars Archaeological Research Project”, a joint Lao-Australian project funded by the Australian Research Council. The inter...
Simultaneous inversion of teleseismic P- and converted S-waves to constrain the seismic structure of the crust
- Publication Name: AEGC 2021
- Authors: Mehdi Tork Qashqai, Erdinc Saygin
- Date Published: September 2021
Abstract:
Traveltimes of P and mode-converted S-waves and their reverberations place a tight constraint on the Vp/Vs ratio and their amplitude ratio provides tight bounds on the P and S wave velocity jumps across the main discontinuities in the subsurface stru...
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...
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...
Robust 3D models of geochemical and petrophysical properties from combining borehole and seismic reflection data: A case study from the Tropicana Gold Mine
- Publication Name: AEGC 2021
- Authors: Duy Thong Kieu, Anton Kepic, Jai Kinkela, Ockert Terblanche, Stephen Brown
- Date Published: September 2021
Abstract:
The creation of 3D models of ore zones and geotechnical properties is typically performed by the interpolation of borehole data. Kriging and other interpolation methods have serious sampling issues, including bias from borehole orientation. Interpola...
Seismic inversion by hybrid machine learning
- Publication Name: AEGC 2021
- Authors: Yuqing Chen, Erdinc Saygin
- Date Published: September 2021
Abstract:
Full waveform inversion (FWI) has been widely used for recovering a high-resolution subsurface structure from the entire content of measured seismic data. However, FWI requires a good starting model which needs to be close to the true model. If it is...
AusArray: uncovering major crustal features using passive seismic data
- Publication Name: AEGC 2021
- Authors: Alexei Gorbatov, Andrew Medlin, Michael P. Doublier, Karol Czarnota, Tanya Fomin, Paul Henson, Brian L.N. Kennett
- Date Published: September 2021
Abstract:
It is generally accepted that improvements in mineral exploration are required to meet the rising demand for minerals associated with a transition to lower carbon energy sources. There is growing consensus in mineral exploration that the distribution...
Calibrating BMR T2 Distribution logs to well test data
- Publication Name: AEGC 2021
- Authors: Keelan O’Neill, Mario Reyes, Benjamin Birt, Timothy Hopper
- Date Published: September 2021
Abstract:
Sustainable groundwater management plans are of critical importance to the future of increasingly scarce water resources. Borehole magnetic resonance (BMR) is a wireline logging technique used to provide in-situ formation evaluation. BMR can be utili...
drillGEO: Designing a Magnetic Resonance Logging-While-Drilling Tool for Minerals Exploration
- Publication Name: AEGC 2021
- Authors: Keelan O’Neill, Sravani Mukkisa, Michael Johns, Timothy Hopper
- Date Published: September 2021
Abstract:
drillGEO is a magnetic resonance (MR) logging-whilstdrilling (LWD) tool targeted at the minerals exploration industry. drillGEO allows real-time geological assessment during reverse-circulation (RC) drilling. Magnetic resonance logging captures the p...
In-situ stress pattern along the Jellinbah Fold Thrust Belt in the Bowen Basin, Australia
- Publication Name: AEGC 2021
- Authors: Saswata Mukherjee, Mojtaba Rajabi, Joan Esterle, Renate Sliwa
- Date Published: September 2021
Abstract:
The Permo-Triassic Bowen Basin hosts numerous thick coal seams, and it is a prolific basin for coal mining and gas production. The development of coal seam gas (CSG) reservoirs in different parts of the Bowen Basin emphasizes the potentiality of the ...
Next-generation velocity model of the Australian crust from synchronous and asynchronous ambient noise imaging
- Publication Name: AEGC 2021
- Authors: Yunfeng Chen, Erdinc Saygin
- Date Published: September 2021
Abstract:
The proliferation of seismic networks in Australia has laid the groundwork for improved probing of the continental crust. In this study, we develop a new crustal model of the Australian continent using a large dataset that consists of nearly 30 years...
Lithospheric-scale magnetotellurics over the Eastern Goldfields Superterrane, Yilgarn Craton
- Publication Name: AEGC 2021
- Authors: Kate Selway, Mike Dentith, Klaus Gessner
- Date Published: September 2021
Abstract:
Long-period magnetotelluric (MT) data were collected in the Yilgarn Craton, Western Australia, in a ~200 x 250 km grid that crosses parts of the heavily mineralised Eastern Goldfields Superterrane and parts of the adjacent, less mineralised Youanmi T...
The uplift history of the Kidson Sub-Basin
- Publication Name: AECG 2021
- Authors: George Marfo, Stuart R. Clark, Tehani Palu
- Date Published: September 2021
Abstract:
The Canning Basin, onshore Western Australia, is highly prospective for conventional and unconventional hydrocarbons, as well as Uranium and sediment-hosted base metal deposits. The basin has evolved since the Early Ordovician undergoing both extensi...
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...
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...
Geochemical signatures and critical metal contents of key deposit types in the Mount Isa Province, Queensland, Australia
- Publication Name: AEGC 2021
- Authors: Vladimir Lisitsin, Courteney Dhnaram, Matthew Valetich
- Date Published: September 2021
Abstract:
Geological Survey of Queensland undertook a program of geochemical and mineralogical characterisation of key deposit types in the Mount Isa Province in Queensland, Australia. The main objectives of the study included: (1) identification of complete m...
Complex recharge mechanisms creating contradictory tracer signals in a large karst aquifer in northern Australia elucidated by a multi-tracer study
- Publication Name: AEGC 2021
- Authors: Axel Suckow, Alec Deslandes, Christoph Gerber, Cornelia Wilske, Sebastien Lamontagne, Yang Guo-Min, Jiang Wei
- Date Published: September 2021
Abstract:
The up to 300m thick Cambrian Limestone Aquifer in northern Australia extends over different climatic zones from the dry savanna to the tropics and is karstified. This hydrologically challenging system was studied using multiple environmental tracer ...
Post-rift magmatism on the continental shelf of the Otway Basin and implications for the igneous plumbing systems in sedimentary basins
- Publication Name: AEGC 2021
- Authors: Yakufu Niyazi, Mark Warne, Daniel Ierodiaconou
- Date Published: September 2021
Abstract:
Various types of igneous rocks have been frequently encountered during hydrocarbon exploration of sedimentary basins along rifted passive margins, and their impacts on hydrocarbon maturation and migration processes are diverse. Buried volcanoes gener...
Spatio-temporal distribution of igneous rocks and seismic facies analysis of buried volcanoes of the Prawn Platform, offshore Otway Basin
- Publication Name: AEGC 2021
- Authors: Yakufu Niyazi, Ovie Emmanuel Eruteya, Mark Warne, Daniel Ierodiaconou
- Date Published: September 2021
Abstract:
Volcanic rocks occur in different types of sedimentary basins, especially those evolving from lithospheric stretching. While volcanoes and other igneous rocks are widespread in the onshore Otway Basin, well-preserved volcanoes have not been documente...
Using modern downhole EM to discover high-grade, narrow vein lodes in a historical gold field, Bellevue Gold Project, Western Australia
- Publication Name: AEGC 2021
- Authors: Anne Tomlinson, Greg Maude
- Date Published: September 2021
Abstract:
With the recommencement of exploration in 2017 by Bellevue Gold Limited at the historical Bellevue Gold Mine in the Agnew-Wiluna greenstone belt, a review of the historical geophysical datasets was undertaken. This included remodelling of downhole EM...
Investigation of old pollution site along the Swan River, Perth, Western Australia using Loupe TEM system
- Publication Name: AEGC 2021
- Authors: Michael A. Hatch, Greg Street, Gavan McGrath, Aaron Davis, Andrew Duncan
- Date Published: September 2021
Abstract:
In this study, data were collected using a new transient-electromagnetic system over an area in Perth, Western Australia, along the Swan River. The site was polluted by industry in the 1960’s and 1970’s, and then remediated by agencies working fo...
Constraining regional-scale groundwater transport predictions using multiple geophysical techniques
- Publication Name: AEGC 2021
- Authors: Chris Li, Rebecca Doble, Michael Hatch, Graham Heinson, Ben Kay
- Date Published: September 2021
Abstract:
Due to often spatially discontinuous and sparse datasets from traditional geohydrological techniques, it is becoming more common to incorporate geophysical data in groundwater models. Not only are the geophysical data sets more continuous, but they c...
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...
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 ...
The genesis and evolution of laminar carbonates in lacustrine basin: implications for shale oil accumulation
- Publication Name: AEGC 2021
- Authors: Chenyang Bai, Shujun Han, Zhenhuan Shen
- Date Published: September 2021
Abstract:
Shale oil has become a popular topic for global unconventional oil and gas research in the petroleum industry. Recent exploration efforts have indicated that laminar carbonates are closely related to the favorable depositional strata of lacustrine sh...
3-D Gravity Geometry Inversion of the Matheson Area, Abitibi greenstone belt: maintaining the contacts of one of the geological unit fixed for obtaining superior results
- Publication Name: AEGC 2021
- Authors: Fabiano Della Justina
- Date Published: September 2021
Abstract:
Using measured density values and surface geology as constraints, and a compilation of two data sets of ground gravity as observed data, 3-D inversions using the VPmg algorithm were used to estimate the subsurface model in the Matheson area, which is...
Geology of the shear zone hosted Dugald River Zn-Pb-Ag deposit, Mt Isa Inlier, NW QLD
- Publication Name: AEGC 2021
- Authors: Corey Jago, Pieter Creus, Shaun Neal
- Date Published: September 2021
Abstract:
Dugald River is a world-class deposit with a total Mineral Resource of 68 Mt @ 11.6 % Zn, 1.2 % Pb, and 26 g/t Ag. The deposit has experienced a protracted history of polyphasal folding, shearing, boudinage and brecciation with mineralisation governe...
Towards standard technical Deeds for (airborne) geophysical surveys in Australia
- Publication Name: AEGC 2021
- Authors: Yvette Poudjom Djomani, James Goodwin
- Date Published: September 2021
Abstract:
Geoscience Australia (GA) and its predecessors have been conducting geophysical surveys and processing geophysical data since the early 1950’s. Over time, GA’s role has changed from being a pioneer in the acquisition and processing of data to foc...
The Delamerian Orogen- An overview of the resistivity structure across scales
- Publication Name: AEGC 2021
- Authors: Kate Robertson, Tom Wise, Stacey Curtis, Alison Kirkby, Stephan Thiel, Jingming Duan, Graham Heinson
- Date Published: September 2021
Abstract:
Here we present 3D and 2D resistivity models of the lithosphere beneath an area of southeast Australia, derived from the Australian Lithospheric Architecture Magnetotelluric Project (AusLAMP) and a subsequent infill broadband MT transect collected in...
Maximising the value of high-definition 3D coal seismic data
- Publication Name: AEGC 2021
- Authors: Margarita Pavlova, Matt Grant, Tim Dean
- Date Published: September 2021
Abstract:
The acquisition of seismic data over coal mining leases in Queensland’s Bowen Basin first commenced over 30 years ago. Since then, coal seismic data has been predominantly utilised for structural interpretation, particularly fault delineation. In t...