Geology

An unconformity is contact between two rock units.Unconformities are typically buried erosional surfaces that can represent a break in the geologic record of hundreds of millions of years or more. It it called an unconformity because the ages of the layers of rock that are abutting each other are discontinuous at the unconformity. An expected age of layer or layers of rock is/are missing due to the erosion; and, some period in geologic time is not represented.

Plate tectonics is a scientific theory that explains the movements and behaviors of the Earth's lithosphere, which is composed of the crust and uppermost...

The Earth's structure is a fascinating and complex arrangement of layers that make up our planet's interior. Understanding this structure is crucial for geologists...

Study of how light passes through thin sections – rock cut and polished to about 0.3 mm thickness Use properties of light absorption and propogation through a mineral à affected by atomic arrangement and composition Learn the properties of light associated with techniques governing the use of a petrographic microscope