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Geological Services Australia

Geology.
Anywhere.

Grade control, core logging, block modelling, and geotechnical services — delivered by an experienced senior geologist who arrives fully self-contained and ready to work.

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Self-Contained Field Setup

Fully equipped TroopCarrier. No accommodation burden on your project.

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JORC-Compliant Deliverables

Every log and report meets JORC Code 2012 and AS 1726-2017 standards.

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10+ Years Geology

Open pit, underground, and exploration across Queensland and nationally.

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AusIMM Member

Professional membership. Full regulatory and compliance knowledge.

What We Do

Core Services

From first-pass exploration to production-stage grade control — GSA delivers senior geological capability at every stage of the mining cycle, without the overhead of a large firm.

01

Grade Control

Blast hole logging, ore/waste classification, dig limit design, and reconciliation for open pit and underground operations.

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02

Block Modelling

Campaign and resource block models in Surpac and Micromine. Domain assignment, estimation, and JORC-compliant validation.

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03

Core Logging — Geological

Detailed diamond core logging to JORC Table 1 standard. Lithology, alteration, mineralisation, structure, and RQD.

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04

Geotechnical Logging

AS 1726-2017 compliant geotechnical core logging and face mapping. Rock mass classification for slope and underground design.

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05

Database & QA/QC

acQuire database setup, management, and QAQC programme design. Data validation and JORC compliance review.

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06

Remote Field Programmes

Autonomous DIDO field deployments. Exploration reconnaissance, drill supervision, and tenement compliance — fully self-contained.

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07

Field Mapping

Regional and prospect-scale geological mapping, structural data collection, and geophysical anomaly ground-truthing.

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08

Procedural Documentation

Grade control SOPs, core logging guides, QAQC procedures, and geology department onboarding documentation.

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09

Surveying & Reporting

RTK GNSS collar pick-up, UAV photogrammetry, and JORC-compliant technical report writing and compliance review.

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GSA TroopCarrier and drill rig on site — Queensland
Toyota LandCruiser
TroopCarrier
Field Platform
Unique Capability

No Accommodation.
No Logistics.
Just Geology.

GSA operates from a purpose-fitted Toyota LandCruiser TroopCarrier — a fully liveable remote field platform. Dave arrives with accommodation, equipment, and capability in a single vehicle. For remote programmes, this is a genuine cost and logistics advantage.

$0
Accommodation cost to client
DIDO
Drive-in drive-out capable
QLD+
Queensland & national reach
1 day
Typical mobilisation time
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Standards & Compliance
JORC Code 2012
AS 1726-2017
ISRM Rock Classification
AusIMM Member
Qld MRA & MQSHA
Professionally Insured
Dave Derham — Senior Geologist
AusIMM Member
JCU — BSc Geology
10+ Years
About GSA

Senior
Experience.
Direct Service.

Dave Derham is a Senior Geologist with over a decade of experience across Queensland's most demanding mine sites — from Ravenswood Gold to Engeny's civil and geotechnical projects. Based in Airlie Beach, GSA brings senior geological capability directly to your project without the overhead of a large consulting firm.

Competent in Surpac, GCX, Leapfrog, Micromine, and QGIS — and experienced across the full chain from raw drill data to JORC-compliant resource documentation.

About Dave

Ready to discuss
your project?

GSA is available for short and long-term engagements across Australia. Enquire for current availability and rates.

Send an Enquiry
📍 Based: Airlie Beach, QLD
🌐 Available: Nationally
⚡ Response: Within 1 business day