42. Which of the following is NOT true about what can happen at convergent bound

Question

42. Which of the following is NOT true about what can happen at convergent boundaries? A: Subduction occurs when the leading edge of at least one plate is oceanic lithosphere B: Denser (oceanic) plate slides beneath other and sinks into mantle C. Contact zone sticks then slips, resulting huge earthquakes D. New oceanic crusts form and move away from spreading center 43. Which of the following correctly states the order in which a continental area is transformed into an ocean basin as a spreading center forms? A. Centering, doming, rifting, and finally spreading B. Doming, centering, spreading, and finally rifting C. Spreading, rifting, doming, and finally centering D. Rifting, doming, spreading, and finally centering 44. The seismic-gap method of earthquake forecasting works by identifying A. segments along a fault that not moved for the longest amount of time B. where along a fault the largest amount of horizontal displacement has occurred C. where along a fault the largest amount of vertical displacement has occurred D. triple junctions and predicting where rift valleys will form in pull-apart gaps E. where hypocenters and epicenters are separated by the smallest vertical distance 45. A rock with only 25% of the parent isotope left has been decaying for time equal to A). 4 B). 2 C). 25 D. 2.5 half-lives

Explanation / Answer

42) D

New oceanic crusts formed on divergent boundaries.

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