Search restricted to attribute 1082 - Foreign
Use link on Feature Type Code to see details of that Feature Type.
| Code | Feature Type | Definition |
|---|---|---|
| 173 | Erratic | Glacially transported stones and boulders. Erratics may be embedded in till or occur on the ground surface. They range in size from pebbles to huge boulders weighing thousands of tons. Their transport range from less than 1 km to more than 800 km. Erratics composed of distinctive rock types can be traced to their point of origin and serve as indicators of glacial flow direction. |