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Pixabayの無料画像 - 石のアーチ, 地質学, 形成, 石, アーチ, 自然, 風景

石のアーチ, 地質学, 形成, 石, アーチ, 自然, 風景, 国立公園, 浸食, ランドマーク, 風光明媚な

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.

For kids of all ages who want to learn about gemology! GIA GemKids! (031014)

Map of Western US Teutonic Plates

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

Geology of the US....this is awesome :)

Scientists: Earth’s core is as hot as the Sun’s surface

Mountains are magnificent and inspiring features. Just thinking of mountains conjures up beautiful images of places like the Rockies, the Andes, Hawaii and the Alps.