Geology Unit Review

Geologists organized the geological time scale based on ____________

• rock record

• evenly spaced time segments

• fossil record

• both a and c

What type of unconformity is this?

• angular

• disconformity

• nonconformity

What type of unconformity is this?

• angular

• disconformity

• unconformity

What type of unconformity is this?

• angular

• disconformity

• unconformity

How are all the unconformities similar?

• There are no similarities, they are all different

• There are cracks in the rocks

• There are different colors

• There are no layers

In the chart, eras are subdivided into periods

• true

• false

Which shows the divisions of the geologic time scale from least to greatest?

• epoch, period, eon, era

• epoch, period, era, eon

• eon, era, period, epoch

• epoch, era, period, eon

Which is true of the rock laws shown below?

• Only older rock contains fossils of complex life forms

• Only younger rock contains fossils of simple life forms

• Both older and younger rocks contain fossils of the most complex life forms

• Only younger rock contains fossils of complex life forms

Layer J is ________ Layer N

• older than

• the same age as

• younger than

• denser than

According to the principle of ______, Event P is younger than Event M.

• inclusions

• cross-cutting relationships

• original horizontality

• subduction