Author Question: How do detrital sedimentary rocks differ from chemical sedimentary ... (Read 92 times)

ap345 · **on:** Jul 13, 2018

How do detrital sedimentary rocks differ from chemical sedimentary rocks?

Question 2

The giant batholiths of the Sierra, Idaho, and Coast Range were emplaced during which orogeny?
A)Sevier orogeny
B)Nevadan orogeny
C)Sonoma orogeny
D)Laramide orogeny
E)Allegheny orogeny

uniquea123 · **Reply #1 on:** Jul 13, 2018

Answer to Question 1

Detrital sedimentary rocks are made from weathered fragments of preexisting rocks. The cement may be new material but otherwise the material forming them predates the formation of the rock.

Chemical sedimentary rocks are made of new materials that precipitate from solutions and form rocks for the first time.

Answer to Question 2

B