27.4 Flashcards
1
Q
process of assigning an exact numerical age to an organism
A
absolute dating
2
Q
process of placing objects in their proper order in time
A
relative dating
3
Q
states that the laws of nature operate today as they have in the past
A
uniformitarianism
4
Q
states that in an undisturbed sequence
A
principle of superposition
5
Q
gaps in the rock record during which either erosion occurred or deposition was absent
A
unconformity
6
Q
the remains or traces of organisms found in the geologic rock record
A
fossil
