EARTHSC 1105 Lecture Notes - Lecture 10: Great Sand Dunes National Park And Preserve, Herbert Hoover, Sabkha
15 Nov 2016
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Document Summary
Great sand dunes national park: paleo-indians utilized stone-tipped projectiles in the park, conditions were much more humid, hunted big game. 1932: president herbert hoover established the area as a national. 2000: 13,000 houses to be constructed in colorado, exploration for ground water resources, park established in 2004 to protect the water resources. Sand dunes: sandboarding/ sandsledding, flooding / swimming, largest in the country. Various geography: glaciated terrain, alpine, wetland, sand dunes. Unique geography: sabkha salt flat, tundra treeless biome where growth is limited by low temperatures, montane mountain biome in which temperature decreases with. Sedimentary rocks formed from eroded pre-existing rocks or biological elevation material. Proterozoic orogenies: sedimentary deposits are metamorphosed (but not melting) gneiss) Erosion over the next 1,170 million years. Clastic formed from sediment (bits of broken rocks) Breccia poorly sorted, angular, large grained. Conglomerate poorly sorted, rounded, large grained. Sandstone well sorted, rounded, fine grained. Shale very well sorted, rounded, very fine grained.
