What am I?
I study rocks and the Earth
geologist
smooth surface made by layers of clay
What is shale
living thing crushed in mud for millions of years
What is a fossil
Where is the Grand Canyon?
Arizona
This type of rock bubbled with acid.
What is limestone
I am made of many small particles that fall off with scratching. I am porous - liquid can easily soak into me.
sandstone
This rock makes the red-colored stripes.
What is sandstone
canyon
the measure of height from sea level to the top
elevation
The acid stayed on top of this rock.
What is shale
I lay lower in the ground and collect run-off
basin
Show how geologist different types of rock on a map?
white board response
very flat on top with one steep side
What is a plateau
Why does the Grand Canyon look striped?
Layers of different colored rock
There are 3 theories how the Grand Canyon was made.
1. ancient rivers merge to make one large river
2. land uplifted and made the plateau, the water flowed down.
3. spill over theory
I can travel many miles and have land on 2 sides.
river
You can usually find fossils in this type of rock.
What is Limestone
land formed by layers of sediment deposited at the mouth of the river.
What is a delta
Name 4 landforms you find in the Grand Canyon?
canyon desert
river plateau
cliff
Mile 20 and Mile 52 have different rock at the river. Why?
different elevation (mile 20 is higher than mile 52)
We are very large areas of land. There are 7 of us on Earth.
continent
At mile 20, you see this rock at the river's edge.
What is sandstone
Very slow moving, frozen river.
glacier
Which rim has the higher elevation?
North
One type of rock bubbled with limestone because of this element.
What is Calcium