dadad

The largest intervals of geologic time and are hundreds of millions of years in duration.

• Era

• Eon

• Epoch

• Period

Estimate whether an object is younger or older than other things found at the site.

• The geologic time scale

• Radiocarbon dating methods

• Absolute dating methods

• Relative dating methods

Is the acquisition and transportation of rock debris by geomorphic agents like running water, the wind, waves etc.

• Erosion

• Deposition

• Aborasion

• Frost wedging

Is the laying down of sediment carried by wind, water or ice, Sediments can be transported as pebbles, sand & mud, or as salts dissolved in water.

• Deposition

• Erosion

• Oxidation

• Dissolution

The breaking down or dissolving of rocks and minerals on the surface of the Earth. Water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering.

• Gradation

• Wedging

• Weathering

• Hydrolysis

Also called mass wasting, includes all processes by which soil and rock materials are dislodged and transported downslope under the direct application of gravitational stresses.

• Fast Movements

• Sudden Movements

• Mass Movements

• Slow Movements

The movement of solid materials in the crust could take up to hundreds and millions of years in duration and could affect relatively large areas.

• Fast Movements

• Mass Movements

• Slow Movements

• Sudden Movements

Plants and animals as agents of mechanical weathering.

• Dissolution

• Industrial waste

• Biological Activity

• Abrasion

Built through forces of tension.

• Fault Mountains

• Monocline

• Syncline

• Fold Mountains

The most abundant among the groups of minerals contains chemical elements such as silicon and some aluminum.

• Non-Metallic Minerals

• Metallic Minerals

• Siliceous Minerals