Which of the following is NOT one of the classes of sedimentary rocks? Select on

Question

Which of the following is NOT one of the classes of sedimentary rocks?

Select one:

a. detrital

b. biochemical

c. intrusive

d. chemical

Question 2:

As sediment is transported downstream, away from its point of origin, the particles become:

Select one:

a. All of the choices are correct.

b. rounder

c. smaller

d. better sorted

Question 3

Ripple marks, cross beds, graded beds, and mud cracks are all examples of:

Select one:

a. sedimentary structures

b. stratification

c. bedding

d. stratigraphic formations

Question 4

Where do sedimentary rocks form?

Select one:

a. lower crust

b. upper asthenosphere

c. upper crust

d. lower lithosphere

Question 5

Formation of a clastic sedimentary rock involves five stages. Which of the following describes lithification?

Select one:

a.

process by which particles settle out of transport medium

b. disintegration of bedrock into separate particles

c. the movement of sedimentary particles by water, wind, or ice

d. compaction and cementation of loose particles to form solid rock

Question 6

Rocks formed dominantly from the calcium carbonate shells of marine organisms are classified as _____ and called _____.

Select one:

a.

clastic; arkose

b. organic; coal

c. chemical; travertine

d. biochemical; limestone

Question 7

Ripple marks, dunes, and cross bedding are useful indicators of:

Select one:

a. water depth

b. current direction

c. flow velocity

d. sediment source

Question 8

Which of the following is NOT a useful indicator of depositional environment?

Select one:

a. fossils

b. sorting

c. source rocks

d. sorting

Question 9

What is the most abundant element in coal?

Select one:

a. silicon

b. oxygen

c. carbon

d. iron

Question 10

Sedimentary rocks form from the cooling and crystallization of lava.

Select one:

True

False

Explanation / Answer

1) intrusive.

2) all of the above

3) sedimentay structures

4) upper crust

5) compaction and cementation of loose particles to form solid rock

6) organic and limestone

7)  current direction

8) source rock

9) carbon

10) flase

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