Geology Sedimentary Rocks

Sedimentary Rocks: Mechanical Weathering

 is accomplished by physical forces that break rock into smaller and smaller pieces without changing the rock’s mineral composition. Frost wedging, temperature changes, abrasion.

Sedimentary Rocks: Chemical Weathering

This process alters the mineral composition of rocks through chemical reactions. Oxidation.

Describe the different ways sediments become Sedimentary Rocks

Lithification, compaction, cementation, Diagenesis.

Two General Types Of Sedimentary Rocks

Chemical Non clastic, Clastic Detrital

Distinguish various types of Sedimentary Rocks:

Shale, silt, and pebbles.

Sedimentary Rocks Precipetation

oversaturation of minerals.

Sedimentary Rocks Evaporation

When water evaporates the minerals.

Sedimentary Rocks: Clastic

Formed from fragments of other rocks that are cemented together.

Sedimentary Rocks: Non Clastic

Formed from interlocking crystals.

Relate sedimentary rock layers or strata to earth’s history:

Fossils provide evidence of past life.

Two Broad groups of Non Metallic Mineral Resources

Building: stone, cement. Industrial minerals: garnet, corundum.

Energy Sources Associated with Sedimentary Rocks

Coal, petroleum, natural gas

Environmental Problems and Possible Solutions

Mining coal can turn the country into a wasteland and produce harmful emissions into the air. You could use solar or wind energy.