Relative Dating
Laws of Stratigraphy
Index Fossils
Random from Unit 1
100
Which 2 layers (A, B, C, D) are the same age?
B & C
100
Which Law of Stratigraphy is best described by the below image?
Law of Superposition
100
The best indicator of an area's ancient environmental conditions and climates would be the
A) type and distribution of fossils
B) current plant and animal life
C) banding patterns of metamorphosed rocks
D) amount of carbon-14 found in sedimentary layers
A) type and distribution of fossils
100
DAILY DOUBLE
Based on Relative dating and other techniques, how old do we think the Earth is? (Closest answer wins, down to the hundredths decimal point like shown below)
0.00
4.54 billion years ago
200
What feature is the YOUNGEST (choose a single number)
3
200
Inclusions
200
W
200
Define Stratigraphy
Study of Strata (rock Layers)
300
Put all labels in order from oldest to youngest
-(J, V, M, R, T are rock layers)
-(GF is a fault, CU is erosion, also called an unconformity) 
Oldest > T > R > GF > CU > M > V > J > Youngest
300
Which Law of Stratigraphy is best described by the below image?
Law of Cross-Cutting Relationships
300
Both shells below are index fossils. Based on this, determine which layer below is the OLDEST and draw that design for your answer.
300
(2) Erosion created an unconformity (another name for a missing section of rock) between rock layers 2 and 4 in outcrop B
400
Place in order from OLDEST to YOUNGEST (MD is a dyke, PF is a fault) - You do NOT need to include erosion.
Oldest --> G, N, PF, K, MD, S, D <-- Youngest
400
Which Law of Stratigraphy is best described by the below image?
Law of Lateral Continuity
400
Four rock outcrops, labeled 1, 2, 3, and 4, found within the same plateau, are represented below. Index fossils found in some of the rock layers are shown. The rock layers have not been overturned.
Draw the pattern of the layer that is the YOUNGEST.
400
(2) sequence of rock layers on each side of the canyon
500
Tan Siltstone (if you match common layers and line them up horizontaly, the first column will be taller and the highest layer up is tan siltstone)
500
Name all 5 Laws of Stratigraphy we discussed
1) Superposition
2) Lateral Continuity
3) Cross-Cutting Relationships
4) Inclusions
5) Original Horizontality
500
What are the 4 criteria for a fossil to be considered a good index fossil?
1) Widespread (found in all locations)
2) Lived for short time (Found in one layer)
3) Easily Recognizable (easy to distinguish)
4) Abundant (lots of them)
500
What is the name of scientists who study fossils, ancient creatures, and the overall history of Earth through the fossil records?
IT MUST BE SPELLED CORRECTLY TO BE COUNTED RIGHT ;)
Paleontologist