Geography Final Questions 7

The Precambrian Eon encompasses what percentage of the Earth's total history?

22.4%

Who first proposed the theory of uniformitarianism?

James Hutton

The Sierra Nevada mountain range in California is an example of

an exposed batholith

Sedimentary rocks are more a product of the _________ system whereas metamorphic and igneous rocks are more a product of the __________ system.

exogenic; endogenic

Continental crust is basically _______, whereas oceanic crust is basically ________

granite; basalt

The layer within the earth that lies directly below the lithosphere, but above the upper mantle, is best described as

a plastic-like layer that flows in response to heat and pressure

The belief that large disasters (such as the flood described in the Christian Bible) have produced most of the major features of the earth is called:

catastrophism

The principles of buoyancy and balance, when applied to the Earth's crust, helps us to explain fluctuations in Earth's outer crust, a property known as

isostasy

Which of the following is not a cementing agent for clastic sedimentary rocks?

salt

The occurrence of contact metamorphism would be direct evidence for

the local intrusion of magma