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) a Mesozoic accretionary wedge
B) a Paleozoic accretionary wedge
C) a Mesozoic island arc
D) a Mesozoic oceanic plateau
E) a Cenozoic forearc basin
C
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Hydrogenous sediments: a. are of biological origin
b. are of extraterrestrial origin. c. originate from weathering and erosion. d. precipitate directly from seawater.
Large, explosive volcanic eruptions eject large quantities of ________ into the stratosphere, causing temporary global cooling
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The recommended daily amount (based on 2000 Cal and 2500 Cal intake) of which of the following need not be shown on a food packaging label?
A) cholesterol B) magnesium C) potassium D) sodium
According to dependency theorists, _______________ is the relationship that develops when former colonies, which are now independent countries, must continue to depend on exports of raw materials and purchases of finished goods from their former colonizers and other MDCs, and this disadvantageous position kept them poor
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