Blog

The most important concentration of earthquakes in the world is the Mediterranean-Himalayan Belt.

A rock that behaves in a(n) ____ manner will bend under stress and does not return to its original shape. 

Sandstones and gravels make the only aquifers; no other rocks are useful.

A(n) _______ is an erosional surface that represents a gap in the geologic record. 

In a _____ fault, the hanging-wall block moves up relative to the footwall block. 

A ______ stress is caused by forces pulling away from one another. 

A(n) __ is the body of sediment deposited at the mouth of a river when the river’s velocity decreases. 

Deep rocks behave as _____ material under stress rather than breaking. 

A metamorphic rock is similar both in mineralogy and texture to its parent rock.

When marine geologists collects a core of undeformed ocean-floor sediment, they know that the youngest layer is on the top of the core and the oldest is at the bottom because of the principle of __.