Wave-formed ripple marks ____.
A) tend to have symmetrical profiles
B) are good indicators of ancient current directions
C) have a gentle slope and a steep slope
D) form in undisturbed deep-sea sedimentary environments
E) form when clay-rich sediment dries and shrinks
Correct Answer:
Verified
Q27: Marine transgressions are created when _.
A)rising sea
Q28: A major characteristic of graded bedding is
Q29: The most common chemical sedimentary rocks are
Q30: Rock salt and rock gypsum are both
Q31: Fossils are common because _.
A)bones are so
Q33: Detrital sedimentary rocks are _.
A)organisms are important
Q34: Calcium carbonate readily dissolves in water that
Q35: Anthracite coal _.
A)has up to 75% carbon
B)is
Q36: Conglomerate is common, but sedimentary breccia is
Q37: Sedimentary structures _.
A)are folded and faulted after
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