Dating Flashcards
(11 cards)
1
Q
Law of superposition
A
oldest layers on the bottom
2
Q
Original Horizontality?
A
Sediments laid flat.
3
Q
Inclusions?
A
Fragments are older than the rock containing them.
4
Q
Unconformities
A
Gaps in geologic record.
5
Q
Disconformity?
A
Flat-lying beds above/below
6
Q
Angular
A
Tilted rocks below flat beds.
7
Q
Nonconformity
A
Sediments over ig/metamorphic rock.
8
Q
absolute dating uses what element?
A
carbon 14, radioactive decay
9
Q
What does absolute dating measure?
A
Time since burial or crystallization
10
Q
What is carbon dating?
A
the object we are extracting carbon from that has to have been living
11
Q
A
