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_____ earthquakes probably occur along older faults that are no longer at plate boundaries, for example the New Madrid Missouri earthquakes of 1811-1812.
Q8: Regardless of length of service,the older the
Q11: Eruptive activity at the summit of the
Q17: A _ is a layer of sedimentary
Q20: _ are rounded masses of rock that
Q29: In cold climates freezing and thawing contribute
Q42: On a geologic map,a symbol that looks
Q44: The Earth's core is made up of
Q48: Sand grains can be distinguished from silt
Q49: To understand geology one must understand how
Q65: What is another term for an expatriate?