Rock Layers
What kind of rock is formed in layers?
Sedimentary
Younger rock is found __________ older rock.
Above
What is a fault?
A break or crack in the Earth's crust where rock can move. Rock "slips" down and disrupts the layers
What are the 4 ways rock layers can be disturbed?
Folding, Tilting, Faults, and Intrusions
Determining whether an object or event is older or younger than other objects or events is called....
Relative Dating
When layers are moved up or down unevenly, it is called...
Tilting
What does superposition mean?
Above a specific place
What is an unconformity?
A missing layer from the geologic record.
An intrusion
What is a geologic column?
Rock layers used to learn about Earth's history
Fossil A is found above Fossil B. Which fossil is older?
Fossil B
What are the two ways unconformities happen?
1. Deposition did not happen for a long time.
2. Erosion of the layer
The Law of Superposition states that....
Younger rock is found above older rock as long as the rock has not been disturbed.
An intrusion or fault must be ______________ that the rock that it cuts through.
younger