Detrital grains of which mineral(s) are extremely rare in detrital sediments? Why?
A) calcite; it is soft and relatively soluble
B) clays; they are rare in soils and regolith
C) quartz; it is very hard and insoluble
D) feldspars; they occur only in granites
Correct Answer:
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A)on
Q27: Which sediment gets lithified to become conglomerate?
A)gravel
B)sand
C)clay
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