Question 1
The Sierra Nevada Mountains of California, and the Teton Mountains of Wyoming, ranges are examples of ________.
◦ fault blocks uplifted by late Tertiary to Quaternary normal faulting
◦ isostatic uplift of crust over thickened in early Paleozoic time
◦ uplifted blocks bounded by Quaternary reverse faults
◦ folding, compression, and thickening of Paleozoic strata in Jurassic time
Question 2
The Peninsular terrane is now part of the crust of North America in southern Alaska. The dominant rock type in this terrane is intrusive igneous rock that ranges in composition from gabbro to granite and volcanic rock with a similar compositional range. Geologic evidence indicates the Peninsular terrane collided with North America during late Mesozoic time. Which of the following would be the most reasonable interpretation for the origins of the Peninsular terrane?
◦ a Paleozoic accretionary wedge
◦ a Mesozoic oceanic plateau
◦ a Cenozoic forearc basin
◦ a Mesozoic accretionary wedge
◦ a Mesozoic island arc
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