Relative Dating
Absolute Dating
Continental Drift
100
The Law of Superposition states that the OLDEST rocks are located where???
BOTTOM
100
How old is the EARTH?
4.6 Billion
100
The super continent that formed around 300 mya is known as?
Pangea
200
The LAW of Original Horizontallity states that rocks started off what?
in horizontal flat layers
200
What is the Half Life of Carbon - 14 in standard form (ex 100,000 years)
5,700 years
200
What was the cause of the mass extinction of dinosaurs and ammonoids around 65.5 million years ago?
a large asteroid
300
After which layer did rock unit R form?
Rock Unit X
300
If a geologist dated a carbon rich mastodon bone to have gone through 3 Half Lives state how many years old this bone is in years.
17100 years
300
Give a rough estimate of how long humans have existed on earth for in Percentage% of Earth's history.
Less than 1%
0.01%
400
List the rock layers from OLDEST to YOUNGEST? (Include Erosion A)
P, K, M, S, X, R, A, B, J, F
400
If a geologist dated a carbon rich mastodon bone to have gone through 3 Half Lives state, what is the percentage of Nitrogen-14 that has been produced within this bone.
87.5%
400
Fill in the missing criteria for a fossil to be considered an INDEX fossil:
1. The fossil is easily identifiable
2. The fossil existed for a short period of geologic time
3. ____________________________________
The fossil lived in a large geographic area
500
What is another name for the Erosion A
Unconformity
500
A rock contains 6.25% of its Original Uranium - 238 isotope. What percentage of Lead-206 does this substance now contain?
93.75%
500
What NYS index fossil would you likely find in the Newark Lowlands?
Coelophysis
