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20. Where are turbidite sediments are most likely to be found?
a) flood plains
b) rivers
c) deep ocean basins
d) carbonate platforms
21. Which of the following textures results from pressure solution?
a) sutured grain contacts
b) undulose extinction
c) secondary porosity
d) all of the above
22. Which type of allochem forms by direct precipitation from seawater?
a) bioclast
b) limeclast
c) peloid
d) ooid
23. In which kind of sedimentary basin would you expect evaporites to form?
a) fore-arc basin
b) flysch basin
c) intracontinental basin
d) deep ocean basin
24. Which commodity is extracted mainly from chemical sediments?
a) iron
b) copper
) gold
d) platinum
25. Which of the following is not a planar fabric element?
a) compositional layering
b) discoidal segregations with parallel minor axes
c) parallel preferred orientation of platey mineral grains
d) parallel preferred orientation of needle-shaped mineral grains.
26. What do you call metamorphism primarily resulting from local heating alone?
a) metasomatism
b) contact metamorphism
c) regional metamorphism
d) metamictization
27. Choose the term that best describes a single large crystal that encloses many smaller crystals
in a metamorphic rock:
a) poikiloblast
b) nematoblast
c) pseudomorph
d) porphyroblast

Top Answer

20.c) deep ocean basins 21.d) all of the above 22.d) ooid 23.c) intracontinental basin 24.b) copper 25.a)... View the full answer

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