Making Maps
Government geologists study the rocks and landscape that make up Western Australia. By looking at and sampling rocks they can find out how and when these rocks formed. The knowledge they gain by working in the bush is presented as geological maps and reports which help the community, industry and government to plan for the future.
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Government Geologists Making Maps
It's A Big State
Detailed geological maps so far only cover about one quarter of the State. New mapping projects are prioritised on the basis of potential for maximum benefit to the community.
Consultation
Before starting a mapping project geologists consult with Aboriginal, pastoral, or mining people with interests in the land, and with CALM and other government agencies.
Mapping Equipment
Geologists use aerial photographs and GPS to locate outcrops on a topographic map. Field measurements are made with a compass, and details recorded on a portable computer.
Bush Work
Geologists use 4WD vehicles to get to rock outcrops. They carry camping equipment, food, water, and safety equipment including HF radio and satellite phone. They may shift camp every few days as they map an area.
Helicopter
Helicopters are sometimes used to access remote outcrops and collect small samples.
Rock and Soil Samples
Geologists often need to collect small rock and soil samples for further study or chemical analysis.
Office Work
The geological map takes shape when the geologist transfers information from the bush onto a map base.
Computerized Maps
Computers are widely used to assemble all the geological data onto a coloured geological map.
The Finished Map
Geological maps are plotted by computers. As well as rock types and outcrops the maps show creeks, roads, tracks, bores and other landmarks.
