Download Geology 12 Assignment on Sedimentary Rocks

Geology 12 Assignment on Sedimentary Rocks (3c)
1) How does the volume of sedimentary rocks in Earth’s crust compare with the volume
of igneous rocks in the crust?
2) Describe 3 ways of moving crustal materials from a high point to a low point?
3) What is the difference between mechanical and chemical weathering?
4) Describe compaction and cementation.
5) Describe 4 reasons why sedimentary rocks are important to humans.
6) What minerals are most common in detrital sedimentary rocks? Why are these
minerals so abundant?
7) What is the best characteristic for distinguishing detrital sedimentary rocks?
8) Describe the difference in the transport of gravel particles than clay particles.
Because of this difference, where do geologists find gravel? Clay?
9) List 3 types of common detrital sedimentary rocks in order of increasing particle size.
10) What is fissility? Why does shale have high fissility?
11) Describe 3 uses for shale.
12) How does transport time affect the sorting of sandstone particles?
13) What does the roughness or smoothness of sandstone particles tell geologists are
transport of these particles?
14) Describe 3 types of sandstone.
15) Contrast conglomerate and breccia.
16) Describe two main processes that produce chemical sediments.
17) How is dolostone different than limestone? Why is dolostone older than limestone?
18) Define evaporites and name 3 examples of evaporites.
19) Describe how coal is formed.
20) Describe two ways that texture is used to classify sedimentary rocks.
21) What texture do all detrital sedimentary rocks have?