Author Question: Stoping is the process in which ____. A)pyroclastic flows are tranformed into obsidian B)rising ... (Read 104 times)

jayhills49 · **on:** Jul 13, 2018

Stoping is the process in which ____.
A)pyroclastic flows are tranformed into obsidian
B)rising magma detaches and engulfs pieces of country rock
C)the viscosity of magma changes due to changes in silica content
D)dikes are formed due to intense heat in the country rock
E)erosion exposes batholiths

Question 2

The exposed part of the North American craton is the ____.
A)Pacific coast
B)Appalachian Mountains
C)Adirondack Mountains
D)Canadian shield
E)Great Lakes basin