chapter 12 Flashcards
granite
(intrusive, igneous rock)
gold nugget
naturally occurring gold, 85%-95%, come in all size
how are deposits are classified as
primary (rock), placer(river), laterite (soil)
lose gold deposits
usually hosted in igneous rock, associated with plate collision
placer gold deposit
sourced from the erosion of other gold deposits
glacial erratics
pieces of rock that differs from the size and type of rock native to the area in which it rests
nunataks
mountain peaks that projected above the glaciers and were not overridden by ice
roches moutonees
have a smooth, rounded, polished side
batholith
large area of exposed granite
continental glaciers
repeatedly advanced and retreated over vast areas of northern Europe and northern america
valley or alpine glaciers
confined to a valley (almost always a formed stream valley). flows from higher to lower elevations
what tectonic setting was Yosemite national park created in?
convergent