27.4 Flashcards
1
Q
\
]Define absolute dating
A
The process of assigning an exact numerical age to an organism, an object, or an event.
2
Q
Define relative dating
A
The process of placing objects or events in their proper order in time.
3
Q
Define Uniformitarianism
A
States that the laws of nature operate today as they have in the past
4
Q
Define principle of superposition
A
States that in an undisturbed sequence of sedimentary rock layers, the youngest rocks will be at the top and the oldest rocks will be at the bottom.
5
Q
Define Uncomformities
A
They are gaps in the rock record during which either erosion occurred or deposition was absent.
6
Q
Define Fossils
A
The remains or traces of organisms found in the geologic rock record.
