Mountain Building and Geologic Structures. Can you name these mountains?. Caledonians. Urals. Appalachians. Alps. Rocky Mountains. Himalayas. Andes Urals Appalachians Caledonians Great Dividing Range Himalayas Alps Rockies. Andes. Great Dividing Range.
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Great Dividing Range
What Processes Build Mountains?
Fold mountains and thrust faults
Thicker Crust in mountains
Rock hardness determines the topography
Some mountains are volcanic (igneous) mountains
Composite Cone – Mount Shasta
Slices of sea floor, folded sediments, island arcs, and terranes from other places accreted to the Coast Range
Terrane Map tectonics?
Aleutian Trench, Alaska
why Alaska gets such big
Ultimate destination of LA
State made entirely of accreted terranes
sutures, faulting between them
20,320 Mt. McKinley
Bay Area Terranes tectonics?
Red Rock? Angel Island?
each of these bounded by faults
much more than just San Andreas and Hayward
A sediment-filled basin
Transverse Ranges – Complex Mountains
A Granitic Batholith
Klamath Terranes tectonics?
this map shows 10
and many sub-terranes
how do you divide them?
depends on purpose
how small is too small to
call a terrane?
The Great Basin
Basin and Ranges