Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Transcontinental Arch  | |
|---|---|
| BT | North America |
| .Transcontinental Arch | |
| RT | Canada |
| United States | |
| Mexico | |
| Great Plains | |
| Midcontinent | |
| SN | Prominent Middle Ordovician feature extending from the Canadian Shield, southwest across the Great Plains to NW Mexico. Indexed with states, countries, or regions as applicable. Added to Thesaurus in 1993. |