Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Stratigraphics
Learn the seven stratigraphic principles.
| Question | Answer |
|---|---|
| Principles of superposition. | In a sequence of sedimentary rocks, the oldest layer is at the bottom and the youngest layer is at the top. Sometimes referred to as "layer cake geology" |
| principle of original horizontality. | Sedimentary rocks are deposited in layers parallel to Earth's surface. |
| Principle of original lateral continuity. | Sedimentary beds originally are laterally continuous within their environments of deposition. |
| Principle of cross-cutting relationships. | Rocks or other geologic features that cut across preexisting rocks are younger than the rocks that they cut across. |
| Principle of inclusions. | Any part of an existing rock that is incorporated into a sedimentary layers or igneous intrusion is older than the sedimentary layer or intrusion into which it has been incorporated. |
| Principle of unconforormities. | Develops in a geologic cross-section when erosion or nondeposition interrupts the continuity of the geologic record. |
| The principle of fossil succession | Rock layers record the changes because the fossils of plants and animals that lived at one time will not be found in rocks that were formed at a different time. |
Created by:
100001012847924
Popular Earth Science sets