Exam 6: Sedimentation: Rocks Formed by Surface Processes

Which of the following is considered a carbonate mineral?

-In what type of environment did the ripples depicted above most likely form?

Which kind(s) of sediment accumulate(s) where transport currents are strong?

During diagenesis the sediments may undergo ___ changes.

Most shells of marine organisms are composed of

Which of the following sedimentary environments is not characteristically a siliciclastic sedimentary environment?

Studies of marine evaporate deposits indicate that the chemistry of ocean water has changed greatly over the past 1.8 billion years.

-In which of the following sedimentary environments would you be most likely to find symmetrical ripples?

Chemical sedimentary environments are found only in marine settings.

Which of the following evaporite minerals forms first in a marine evaporite environment?

Which kind of rock listed below forms from a siliceous sediment?

Clastic sediments are much more abundant in Earth's crust than are chemical and biological sediments.

Which of the following rocks is composed of calcium carbonate?

Graded bedding is a common sedimentary structure in which environment?

Assuming the sand dune was deposited by wind currents, which way was the wind blowing?

Abrasion of sediment particles results in which of the following?

Compaction reduces both the volume and porosity of buried sediments, whereas cementation reduces the porosity of sediments and leaves the volume unchanged.

Which of the following substances is made up of silica?

The thick accumulations of sediment on the North American Atlantic margin are the result of which geologic process?

In what type of rocks are you most likely to find oil, natural gas, and coal?