From CreationWiki, the encyclopedia of creation science
The three principles of stratigraphy he formulated were:
- Principle of superposition: that in a series of layers of rock made of sediment (sedimentary rock), the older rock layers are under the newer/younger layers.
- Principle of original horizontality: rock layers are formed originally in a horizontal position, and go out of that shape due to disturbances later on.
- Principle of lateral continuity: rock layers are spread out continuously unless a barrier stops it, or further changes in landscape break those sediment layers apart.
His principles assumed an original fluid state of rock and minerals, a theory which was aided by his knowledge of the biblical flood.