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12. Which of the following is not a type of plate boundary?
a) transform fault
b) spreading center
c) hotspot
d) subduction zone
13. At what kind of lithospheric plate boundary does decompression melting take place?
a) divergent margins
b) convergent margins
c) conservative margins
d) liberal margins
14. Which of the following has probably not been an important source of heat within the Earth?
a) friction due to subduction
b) accretion from the solar nebula
c) crystallization of the inner core
d) radioactive decay of K, Th, and U
15. Which of the following features is not associated with major volcanic activity?
a) mantle plumes
b) convergent plate margins
conservative plate margins
d) divergent plate margins
16. Which of these groups of sediment types are characteristic of mollasse deposits?
a) lacustrine shales, fluvial sandstones and conglomerates
b) turbidite fans
c) pelagic ooze
d) platform carbonates and evaporites
17. Which of the following is a diagenetic process?
a) neomorphism
b) diamictization
c) metasomatism
d) bimetasomatism
18. Where are flysch deposits characteristically formed?
a) in deep basins near to major mountain belts
b) on deep abyssal plains far from mountain belts
c) in epicontinental basins
d) along passive margins
19. What is the most abundant type of sedimentary rock?
a) conglomerate
b) sandstone
c) mudstone
d) carbonate

Top Answer

12.c) hotspot 13.a) divergent margins 14.a) friction due to subduction 15.c) conservative plate margins 16.a)... View the full answer

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