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Geography, 20.01.2021 06:10 igivehead666

Base your answer on the cross sections below cross sections represent three different stages in the development of Denali (Mt. McKinley
and the growth of the North American Plate in Alaska near the boundary with the Pacific
Plate. Arrows represent the direction of plate movement,
Formation of Denall (Mt. McKinley
South
North
Inland som over
sedimentary rock layers
P
Pacific
Ocean
POP
Stage 1
100 Milion Years Ago
Sedimentary rocks that would later for
Denal's (Mt. Mckinleys) north peak
began as sediments deposited under
an inland son
(Not down to scale)
South
North
North American
Pacific
Ocean
Stage 2
56 Million Years Ago
Magma rose into the sedimentary rocks.
This would later for the granite rock
making up Denal's Mt. Mckinlays)
south peak. Tectonic forces continued
to push up the land surface
Rising magma
Not drawn to scale)
South
Denal (Mt McKinley North
Granite Sedimentary rock
Pacific
Ocean
North American
Stage 3
Today
Tectonic forces continue to
Cause uplit in the region
Not drawn to scale)
State the average density of the continental crust of the North American Plate and the
average density of the oceanic crust of the Pacific Plate

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