Link to a Map of Active mines and mineral plants in the US (2003) Mine plants and operations for commodities monitored by the Minerals Information Team of the USGS. Operations included are those considered active in 2003 and surveyed by the USGS.
Folding and faulting on the west ridge of Mount Evan-Thomas, Opal Range, Peter Lougheed Provincial Park, Alberta. View looking south across Grizzly Creek at structural features (yellow boxes outline detail images to highlight key features, shown in subsequent images). Rocks are Carboniferous (Mississippian) carbonates. Location is 50.7660, -115.1259.
Jurassic Period: 201 MYA-145 Mya); end of Triassic to beginning of Cretaceous; middle period of Mesozoic Era; age of reptiles; start of period marked by Triassic-Jurassic extinction event; supercontinent Pangaea beginning to rift into 2 landmasses, Laurasia and Gondwana; created more coastlines and shifted continental climate from dry to humid; many arid deserts replaced by lush rain forests