Detrital sedimentary rocks are ____.
A) organisms are important in its origin
B) always calcite and are formed in an alkaline environment
C) made up of interlocking mineral crystals
D) derived from parent material and usually classified by the size of their constituent particles
E) sometimes composed of small spherical grains called ooids that have a small nucleus around which concentric layers of calcite precipitate
Correct Answer:
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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
Q32: Wave-formed ripple marks _.
A)tend to have symmetrical
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
Q38: Marine regression occurs when _.
A)sea level falls
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