Flashcards
Fundamental principles in geology
Cards in this deck (10)
- 1What is superposition?Older rocks are below younger rocks.
- 2What is original horizontality?Layered rocks were originally deposited flat and horizontal.
- 3What is original lateral continuity?Layered rocks were originally solid and continuous in all directions. (Absence of canyons)
- 4What are cross-cutting relationships?Faults and igneous intrusions and erosion surfaces are younger than the rocks they cut.
- 5What are included fragments?Fragments of a rock in the matrix of another rock are older.
- 6What is neptunism?All rocks were deposited in oceans by water. (FALSE)
- 7What is catastrophism?Everything formed quickly in a global disaster. (FALSE)
- 8What is uniformitarianism?Everything formed at slow, uniform rates. (incomplete correct)
- 9What is actualism?All processes active now were active in the past but with varying intensities.
- 10What is neo-catastrophism?Most of the sedimentary rocks recorded represent storm deposits, or mini disasters.