A major characteristic of graded bedding is that the rock layers ____.
A) are thick and easily distinguished from each other
B) formed because turbidity currents are less dense than sediment-free water
C) contain intersecting fractures called mud cracks
D) show an upward decrease in grain size
E) are always formed in deserts
Correct Answer:
Verified
Q23: Oil shales are _.
A)found only in North
Q24: Chemical sedimentary rocks can have a clastic
Q25: Hydrocarbons are formed largely from the _.
A)remains
Q26: A rock composed almost entirely of fragmented
Q27: Marine transgressions are created when _.
A)rising sea
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
Q32: Wave-formed ripple marks _.
A)tend to have symmetrical
Q33: Detrital sedimentary rocks are _.
A)organisms are important
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