EARTHSC 1105 Lecture Notes - Lecture 6: Qualla Boundary, Grenville Orogeny, Clastic Rock
15 Nov 2016
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Cherokee people: 9,000 bce 1838 ce, encountered europeans first in 1540, battles between cherokee and settlers in the 1760s, 1830 president andrew jackson signed the removal act, 1838, cherokee were removed from the land. 10,500 cherokee still lived in the smoky mountains. 1934 great smoky mountain national park was established. Formed the original north american crust: proterozoic age, 1,100 mya, gneiss, ash/tuff, metamorphosed basalt (not melting) due to high temperatures and/ or pressures. Metamorphic rock which has undergone recrystallization. Gneiss foliated, bands of feldspars and quartz. Igneous rocks formed from molten material. Tuff igneous, extrusive rock made of welded ash layers. Precambrian 1,000 to 542 mya: formed during basin extension (rifting, iapetus ocean, ocoee basin, composed of mud, silt and sand sediment. Clastic rocks formed from sediment (bits of broken rocks) Sandstone well sorted, rounded, fine grained. Shale very well sorted, rounded, very fine grained.
