Mining & minerals
DGGS Stream Sediment Geochemistry
Alaska Division of Geological & Geophysical Surveys — stream sediment samples (Au, Cu, As, Sb, REE). Critical for exploration.
Why this data matters
- Geochemistry is one of the strongest direct indicators of mineralization.
- Stream sediment anomalies point to upstream source areas for staking and sampling.
- DGGS is the state authority for Alaska geoscience data.
Data source
| Field | Value |
|---|---|
| Agency | Alaska DGGS |
| Service | DGGS ArcGIS apps |
| Update frequency | As new surveys are published |
| Coverage | Alaska (sample locations) |
| Zoom | Use at zoom 8+ |
Related layers
- Alaska ARDF — known occurrences
- Mineral Belts — terranes and metallogeny
- 3DEP Elevation — terrain context
GIS Endpoints
REST (ArcGIS)
https://maps.dggs.alaska.gov/arcgis/rest/services/apps/Geochem/MapServer/0
QGIS: Layer → Add Layer → Add WMS/WFS Layer → paste URL. ArcGIS: Add Data → Data from Path.
View this layer in the TrueTopo map
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