Rock Types
Grand Canyon
Vocabulary
Weathering and Erosion
Timeline
100
Igneous, sedimentary, and metamorphic rocks.
What are the three rock types?
100
The plateau that the Grand Canyon was formed on
What is the Colorado Plateau
100
This lived for a short time but in many differeny parts of the world
What is an index fossil
100
This forms a stairstep or clifflike formation
What is differential erosion
100
This era ended at 66 mya and began at 245mya
What is the mesozoic era
200
These form when molten rock cools and hardens.
What is metamorphic rocks
200
this formation was formed 10 mya
What is the Grand Canyon
200
This is an interruption in rocks being made
What is an uncomformity
200
This is the settling out of eroded earth material
What is deposition
200
This was 570 mya
What is cambrian
300
These rocks are formed by heat and/or pressure
What are Igneous rocks
300
this is the first layer of the nankoweap canyon
What is Muav limestone
300
to find a relationship between two rock layers from two or more locations
What is corralation
300
The removal and transportation of loose earth material
What is erosion
300
This era is going on today
What is cenozoic
400
These form by getting cemented and compacted together
What are sedimentary rocks
400
the top formation at the north canyon
What is the kaibab limestone
400
This is the first upright human
What is a homoerectus
400
How something is made or comes to be
What is formation
400
This period was 1.6 mya
What is the quaternary period
500
This happens when rocks take a very long time to cool
What is when big crystals form
500
this is the first correlating rock layer in the nankoweap canyon and north canyon
what is supai sandstone
500
They are the earliest humans
What is a homosapien
500
Mountain building, new crust formation, and sedimentation
What are constructive forces
500
How long the Paleozoic Era lasted
What is 3.5 million years ago
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