Author Question: Conglomerate is common, but sedimentary breccia is not. Why? A)The gravel becomes rounded very ... (Read 57 times)

RRMR · **on:** Jul 13, 2018

Conglomerate is common, but sedimentary breccia is not. Why?
A)The gravel becomes rounded very quickly during transport.
B)The gravel is so easily consolidated.
C)The conglomerate is formed in place and does not have to be transported for long distances.
D)The sedimentary breccia is composed of rare rock types.
E)Conglomerate is weathered by water, but sedimentary breccia is weathered by wind.

Question 2

Describe the characteristics of an excellent guide fossil and provide one example.

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

Answer to Question 1

A

Answer to Question 2

The ammonoids are excellent guide fossils because of distinctive physical features, short life span, and wide geographic distribution.