Expert Engineering Geological Services
Innovative Solutions for Your Projects
Holistic approach to holes in the ground.
Engineering Geology Subject Matter Experts, geotechnical site investigations & factual reports, Engineering Geological Models and interpretation/reports, Design and Construction Phase Services.
From greenfields to end of use. Gen X Geotech provides clients with experienced, independent guidance to identify, manage and mitigate geological and geotechnical risk. The practice is led by a highly credentialed and industry-recognised Technical Director with extensive experience, professional accreditation, independent review responsibilities and a strong record of technical leadership. For larger or more complex projects, Gen X Geotech works within a collaborative team and peer-review framework, bringing broader expertise and rigorous technical scrutiny to project decisions.
From greenfields to end of use. Gen X Geotech provides clients with experienced, independent guidance to identify, manage and mitigate geological and geotechnical risk. The practice is led by a highly credentialed and industry-recognised Technical Director with extensive experience, professional accreditation, independent review responsibilities and a strong record of technical leadership. For larger or more complex projects, Gen X Geotech works within a collaborative team and peer-review framework, bringing broader expertise and rigorous technical scrutiny to project decisions.
ABN 422 376 166 56
ABN 422 376 166 56
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Gen X Geotech provides comprehensive engineering geology services, specialising in geotechnical investigations, detailed reports, risk assessments and peer review services to ensure project success.
Built on 25 years of consultancy experience in mining, tunnelling, dams, pumped hydro and civil, Geo X Geotech brings technical experience, breadth of knowledge, safe work practices, ethics, collaboration and sense of purpose few can boast. Projects are facilitated appropriately for the stage, scale and clients budget.
Exceptional Engineering Geological Services for Diverse Sectors
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Comprehensive experience in engineering geology across mining, tunnelling, dams, pumped hydro and civil, in various geological terrains, allows for a broad expertise few can boast, while bringing complementary integration of knowledge across sectors.
Specialise in comprehensive geotechnical site investigations and factual reporting to AS1726-2017 requirements.
Services
2D & 3D geological and geotechnical models, scaled to suit the project, holistic data interpretation and Geotechnical Interpretive Reports developed as inputs to design.
Peer review services for other firms/clients, Owners Engineer services for engineering geology scopes, and Technical Review Panels.
Forensic assessment of existing data to assess site/project vulnerabilities and proof-mapping to confirm actual conditions are as predicted. Includes expert witness assessments.
ENGINEERING, drilling & HYDROGEOLOGICAL COLLABORATIVE PARTNERS
Established reciprocal partnerships with other companies to enable sharing of resources and completion of client scopes outside of normal engineering geology practice.
ENGINEERING GEOLOGY SUBJECT MATTER EXPERT
Gen X Geotech is led by a highly credentialed and industry-recognised Technical Director, Helen Baxter-Crawford, with extensive experience, professional accreditation, independent review responsibilities and a strong record of technical leadership across mining, tunnelling, dams, pumped hydro and civil infrastructure, crossing various geological terrains.
Helen is an award winning Engineering Geologist, with Chartered Professional status from the AusIMM.
Helen has a long standing role at the University of Technology Sydney (UTS), teaching engineering geology subjects for the Masters in Tunnelling.
Helen has a long standing role at the University of Technology Sydney (UTS), teaching engineering geology subjects for the Masters in Tunnelling.
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Geotechnical Site Investigations & FACTUAL REPORTING
Expert Site Investigations
Thorough geotechnical site investigations to assess geological and geotechnical conditions, compliant with the requirements of AS1726-2017.
Factual Reporting
Detailed factual reports presenting an uninterpreted data set for use in future modelling and design. Depending on the site's history, this may include a collation of pre-existing data.
SITE TRAINING
Leveraging off nearly two decades of experience implementing internal and client field training programs, Gen X Geotech offers AS1726-2017 compliant field training sessions in rock core logging for up to 3 early career geologists/engineers, specifically in geotechnical logging. These services include time on site and allowance for a personalised feedback report for each students logging.
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engineering geological models (2d&3d) & intERPRETIVE REPORTING
egm's
Gen X Geotech adopt the approach of the IAEG C25 Guidelines for the development and application of
engineering geological models on projects. An EGM is only as good as its constituent parts, theories developed are constantly tested and updated and each facet of the model much speak to the others. The 2D or 3D presentation of an EGM is only a small component, though often the one first requested.
Desk studies
So much data is collected on projects or by nearby projects, that is under utilised. But so is the geologists brain. Gen X Geotech are serious about conceptualising a project using a holistic approach that draws on every scale of available data - tectonic, regional, local, macroscopic, microscopic. The conceptual model is tested and updated at every stage of new information inclusion, but it all starts with a decent desk study.
GIR's
The Geotechnical Interpretive Report builds on an EGM and is a tool to convey the basis of the geological understanding to engineers, typically using the language they speak - numbers. The GIR should similarly be tested and updated/refined as new data is collected. It is a fundamental tool for engineering designers.
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rISK ASSESSMENT, gap analyses, CONSTRUCTION PHASE VALIDATION & TECHNICAL ASSURANCE
Gaps occur in the project knowledge for a number of reasons - cost and time constraints limiting investigations, inappropriate investigation methods, not drilling deeply enough.
Understanding where gaps exist and identifying key risks is a necessity.
Geo X Geotech has the Subject Matter Expert with the skills to effectively identify and then communicate the risk, the consequences/likelihood & the criticality on project success to clients using language to suit the room.
At construction, a record is needed to confirm conditions are as expected and therefore the design should be suitable. Construction phase services are vitally important, but a too often forgotten aspect is collation of the collected record to confirm larger scale project integrity.
Sometimes things do go wrong, so a client may need an external expert to provide assurance the available data was used correctly and interpretations were sound. Gen X Geotech has the experience to fascilitate this.
Understanding where gaps exist and identifying key risks is a necessity.
Geo X Geotech has the Subject Matter Expert with the skills to effectively identify and then communicate the risk, the consequences/likelihood & the criticality on project success to clients using language to suit the room.
At construction, a record is needed to confirm conditions are as expected and therefore the design should be suitable. Construction phase services are vitally important, but a too often forgotten aspect is collation of the collected record to confirm larger scale project integrity.
Sometimes things do go wrong, so a client may need an external expert to provide assurance the available data was used correctly and interpretations were sound. Gen X Geotech has the experience to fascilitate this.
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PUBLICATIONS
Books
M.J Eggers, J.S Griffiths, S Parry and M.G Culshaw. 2016. Developments in Engineering Geology. London, The Geological Society of London.
Journal Papers
Helen Baxter-Crawford, 2021. Lithological Character And Structural Geology Of The Cooks River Area With Focus On The M8 Tunnels Australian Geomechanics, Vol 56, No 4, December 2021.
For this paper she was awarded the Australian Geomechanics Society 2021 Paper of the Year.
Helen Baxter-Crawford and Jonathon Sutton, 2020. Why Aesthetics Needs Early Consideration In Tunnel Design And Excavation – A Case Study From The M8 Australian Geomechanics Sydney Chapter Symposium, November 2020
Helen Baxter-Crawford, 2018. Intrusions in the Sydney Basin with Reference to the Greenacre Dyke Australian Geomechanics, Vol 53, No 2, June 2018.
For this paper she was nominated the Australian Geomechanics Society 2018 Paper of the Year.
Refereed Conference Proceedings
Kara Stariha and Helen Baxter-Crawford, 2022. Utilising point clouds to characterise defect sets in rock slopes. International Conference for Physical Modelling in Geotechnics 2022, Seoul, Korea.
Helen Baxter-Crawford, Ceinwen MacKay, Kimberley Saflian and Trevor Carter, 2020. Modelling the Palaeotopography of Bedrock Hidden by Urban Development. World Tunnel Congress 2020, Kuala Lumpur, Malaysia. Helen Baxter-Crawford. 2019. The answer isn’t always phi equals 25. Iron Ore Conference, July. Perth, Australia. Helen Baxter, Mark Eggers, Ariyudi Mahairini and James Smith. 2015. The Effect of Carbonate Alteration on Detrital Mass Strength and Implications for Geotechnical Slope Design. Iron Ore Conference, July. Perth, Australia Helen Baxter, Carmelo Bellia, Arturo Maldondado and Suzie Strong. 2015. Case Study Assessing Alternative Data Collection Techniques and Analysis Methods to Assist with Geotechnical Slope Design. Iron Ore Conference, July. Perth, Australia. Helen Baxter, Maartin Haest and Dorothee Mittrup. 2015. Advances in Infrared Spectroscopic Sensing Towards Improvements in Geological and Geotechnical Models. International Symposium on Rock Mechanics Congress, May. Montreal, Canada. Helen Baxter, Carmelo Bellia and Arturo Maldondado. 2015. Modelling Detritals and Ancient Landslides using Geochemical Signatures for Improvements to Slope Design – A Case Study. International Symposium on Rock Mechanics Congress 2015 Proceedings, May. Montreal, Canada. Helen Baxter, Tim Rutherford and Robert Bertuzzi. 2013. Geochemistry and Geotechnical Models – a case study from the proposed Kempfield Silver Project, Bathurst, New South Wales. Slope Stability Conference, October. Brisbane, Australia. Helen Baxter and Mark Eggers. 2013. Fault and Shear Characterisation in Archean Banded Iron Formation Bedrock – A Comparison between Core and Televiewer Data Collection Techniques. Iron Ore Conference, July. Perth, Australia. Helen Baxter. 2012. Pilbara Cenozoic Detrital Sequences and Associated Geohazards. AGS Conference, November. Perth, Australia
Helen Baxter-Crawford, Ceinwen MacKay, Kimberley Saflian and Trevor Carter, 2020. Modelling the Palaeotopography of Bedrock Hidden by Urban Development. World Tunnel Congress 2020, Kuala Lumpur, Malaysia. Helen Baxter-Crawford. 2019. The answer isn’t always phi equals 25. Iron Ore Conference, July. Perth, Australia. Helen Baxter, Mark Eggers, Ariyudi Mahairini and James Smith. 2015. The Effect of Carbonate Alteration on Detrital Mass Strength and Implications for Geotechnical Slope Design. Iron Ore Conference, July. Perth, Australia Helen Baxter, Carmelo Bellia, Arturo Maldondado and Suzie Strong. 2015. Case Study Assessing Alternative Data Collection Techniques and Analysis Methods to Assist with Geotechnical Slope Design. Iron Ore Conference, July. Perth, Australia. Helen Baxter, Maartin Haest and Dorothee Mittrup. 2015. Advances in Infrared Spectroscopic Sensing Towards Improvements in Geological and Geotechnical Models. International Symposium on Rock Mechanics Congress, May. Montreal, Canada. Helen Baxter, Carmelo Bellia and Arturo Maldondado. 2015. Modelling Detritals and Ancient Landslides using Geochemical Signatures for Improvements to Slope Design – A Case Study. International Symposium on Rock Mechanics Congress 2015 Proceedings, May. Montreal, Canada. Helen Baxter, Tim Rutherford and Robert Bertuzzi. 2013. Geochemistry and Geotechnical Models – a case study from the proposed Kempfield Silver Project, Bathurst, New South Wales. Slope Stability Conference, October. Brisbane, Australia. Helen Baxter and Mark Eggers. 2013. Fault and Shear Characterisation in Archean Banded Iron Formation Bedrock – A Comparison between Core and Televiewer Data Collection Techniques. Iron Ore Conference, July. Perth, Australia. Helen Baxter. 2012. Pilbara Cenozoic Detrital Sequences and Associated Geohazards. AGS Conference, November. Perth, Australia
Refereed Conference Proceedings
Helen Baxter-Crawford and Dr Mark Quigley, 2026, Dam Risk Assessment – Geological hazard collaboration for improved understanding of seismic hazard ANCOLD 2026, Hobart (pending)
Helen Baxter-Crawford, Bec Smart, Najib Valiyff, 2025, Mapping the Mount Bold Stilling Basin – a time constrained logistical feat, ANCOLD 2025, New Zealand
Helen Baxter-Crawford, 2025, Tunnels and the Geologists – are we using geologists effectively? Australian Tunnelling Conference, Perth, Australia
Helen Baxter-Crawford, 2025, Scoping for Geohazards – environmental contrasts comparing the engineering geologists role between mining, civil road tunnels, dam design and pumped hydro, Australian Conference Engineering Geology 2025, Brisbane
Alex Gomes, Shannon Green and Helen Baxter-Crawford, 2025, Integrated ground risk management and observational design approach for the exploratory tunnels of the Borumba Pumped Hydro Energy Storage (PHES) project), World Tunnelling Congress 2025, Stockholm.
Helen Baxter-Crawford, 2024, Discussion paper on implementation of an overarching authority to improve sustainability in transport mega-projects. 5th International Conference on Transport Geotechnics, 2024, Sydney, Australia.
Helen Baxter-Crawford, Kara Stariha and Deryk Forster, 2023. Bendora Dam 20 Year Review – a Case Study Updating the Geological Model for a Project Without Intrusive Investigation, ANCOLD 2023, Cairns, Australia.
Helen Baxter-Crawford and Aaron Lippett, 2023. Televiewer defect aperture logging for detailed model development - A case study from the M8 Sydney Australia. World Tunnel Congress 2023, Athens, Greece.
Helen Baxter-Crawford and Kara Stariha, 2022. Collation and interpretation of structural data at various scales to inform 3D structural models. International Conference for Physical Modelling in Geotechnics 2022, Seoul, Korea.
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Holistic approach to holes in the ground
ABN 422 376 166 56