Exam 5: Rocks Fossils and Time Making Sense of the Geologic Record

A great example of a trace fossil would be the impression left by a crawling trilobite, an extinct arthropod.

Remains or traces of prehistoric organisms preserved in rocks are ____.

Rocks above and below an unconformity are related.

Which of the following is a trace fossil?

What is the correct order of conformable sedimentary facies, from shoreline toward open water?

An erosional surface that separates older metamorphic or plutonic rocks from younger overlying sedimentary rocks is called a(n) ____.

The basic lithostratigraphic unit is a mappable unit of strata with distinctive upper and lower boundaries called a(n) ____.

Fossils are remains or traces of prehistoric life that have been preserved in rocks of Earth's crust.

Discuss the branch of geology called stratigraphy and how the fundamental geologic principles are used to unravel stratigraphic relationships.

Disconformities exist between parallel layers of sedimentary rocks, and consequently, are hard to identify. What geologic process must occur for an unconformity to develop? What is one way to identify a disconformity, other than numerical dating?

Change in sea level is most affected by ____.

An erosional surface that separates strata that are parallel with one another is called a(n) ____.

A transgression occurs when the sea advances landward.

Lithostratigraphic units are defined solely on the basis of fossil assemblages.

The principle of faunal succession is based on the fact that fossils ____.

What is t he most commonly used time unit, all of which have corresponding time-stratigraphic units?

Not all fossils contain the direct remains of an organism.

A marine regression is characterized by ____.

The fossil record reveals the true diversity of ancient plant and animal life.

A formation is the basic subdivision of biostratigraphic units.