Detector Maps
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Gold follows geology
The geology layer maps the bedrock — units, contacts and faults — compiled from the state and USGS surveys. Gold concentrates along certain rocks and structures; read them and you read the ground.
Four ways prospectors put it to work
Host rocks at a glance
See the units that carry gold and the ones that don't.
Contacts & structure
Faults and contacts are where fluids — and gold — move.
Tie it to the surface
Overlay geochemistry and prospectivity to see why an anomaly sits where it does.
Survey-sourced
Compiled from the state geological surveys and the USGS.
Seamless bedrock, statewide
Mosaic bedrock geology
Seamless geology compiled across the survey maps.
Geology questions, straight answers.
State geological surveys and the USGS, compiled into a seamless layer.
It maps bedrock units, contacts and major structures at survey scale — enough to read the host rocks.
Gold concentrates along particular rocks and structures. Reading the geology tells you which ground is worth your geochem and detector time.
The gold-bearing US states covered by the survey compilations.
Explore the other layers.
Prospect smarter, not harder. .
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