click below
click below
Normal Size Small Size show me how
Module 6
Apologia Exploring Creation with General Science Module 6
| terms | definitions |
|---|---|
| catastrophism | the view that most of earth's geological features are the result of large-scale catastrophes such as floods, volcanic eruptions, etc. |
| uniformitarianism | the view that most of earth's geological features are the result of slow, gradual processes that have been at work for millions or even billions of years. |
| humus | the decayed remains of once-living creatures |
| minerals | inorganic crystalline substances found naturally in the earth |
| weathering | the process by which rocks are broken down by the forces of nature |
| erosion | the process by which sediments and rock fragments are carried away by wind or rain |
| unconformity | a surface of erosion that separates one layer of rock from another |
| sedimentary rock | rock formed from sediments (sand, silt, and other components of soil) and laid down by water or some other agent. |
| igneous rock | rock formed from molten rock, which is usually called magna. |
| metamorphic rock | rock that has undergone extreme change due to lots of heat and pressure. |
| lamination | when a single layer of rock is less than 1 centimeter |
| nonconformity | when stratified layers rest on top of unstratified layers |
| disconformities | when there are parallel, stratified rock layers above and below the unconformity, but there is a clear surface of erosion between them |
| paraconformities | unidentifiable unconformities |
| intrusion | "veins" of igneous rock that shoot right through several layers of sedimentary rock |
| sills | intrusions that run in the same direction as the strata |
| dikes | "veins" that run perpendicular to the dirrection of the strata |