| Term | Definition |
|---|
| Rocks | a mixture of minerals, mineraloids, glass, and organic matter |
| Igneous Rocks | rocks formed by the cooling of molten rock (either magma or lava) |
| 3 major rock types | Igneous, Metamorphic, and Sedimentary |
| Metamorphic Rock | rocks that have changed due to temperature and pressure |
| Foliated Rocks | texture of rocks resulting from mineral grains flattening and lining up in parallel bands |
| Non-Foliated Rocks | texture of rocks where the mineral grains grow, change, and rearrange but do not form bands |
| most common rock below earth's surface | Igneous Rock |
| 75% of rocks at earth's surface | Sedimentary Rock |
| Sedimentary Rock | form when 1.)sediments become pressed or cemented together 2.)sediments precipitate out of a solution |
| sediments | loose material such as rock fragments, mineral grains, and bits of plant and animal remains moved by wind, water, ice, gravity, or dissolve on water |
| weathering | process that breaks rocks into smaller pieces |
| erosion | the movement of weathered material |
| compaction | pressure upon layers of built up small sediments on lower layers causing lower layers to stick together and form solid rock |
| cementation | when the solution of water and dissolved minerals move through open spaces between sediments and cement the sediments together |
| sedimentary rocks are classified by: | compostion and the way they form |
| types of sedimentary rock | detrital, chemical, and organic |
| detrital | sedimentary rocks made from the broken fragments of other rocks that are compacted and cemented together |
| chemical | form when minerals are precipitated from a solution or left behind when a solution evaporates |
| organic | rocks formed from remains of once living things |
| waste coal | a poor quality coal that is a by-product of coal mining |
| hydrate | mix with water |
| congeneration | when both electrical and thermal energy produced by burning waste-coal used by the same plant (to run the plant) |
| examples of detrital rocks | larger: conglomerate and breccia smaller: sandstone and shale |
| examples of chemical rocks | limestone and rock salt |
| examples of organic rocks | fossil rich limestone, coquina, and coal |
Combine with other sets
Share on Facebook
Share on MySpace