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Q: The sub-classification of sedimentary rocks___:
  • A. volcanic and plutonic
  • B. mechanical, chemical, organic
  • C. intrusive, extrusive
  • D. stratified, un-stratified
Correct Answer: Option B - The main types of sedimentary rocks are mechanical chemical and organic. • Chemical sedimentary rocks formed by the crystallization of chemical precipitates. Ex. Limestone. • Organic sedimentary rocks are when shells are cemented together they make a type of limestone. So, limestone can be considered chemical or organic.
B. The main types of sedimentary rocks are mechanical chemical and organic. • Chemical sedimentary rocks formed by the crystallization of chemical precipitates. Ex. Limestone. • Organic sedimentary rocks are when shells are cemented together they make a type of limestone. So, limestone can be considered chemical or organic.

Explanations:

The main types of sedimentary rocks are mechanical chemical and organic. • Chemical sedimentary rocks formed by the crystallization of chemical precipitates. Ex. Limestone. • Organic sedimentary rocks are when shells are cemented together they make a type of limestone. So, limestone can be considered chemical or organic.