NAME____KEY_______ DATE ___________ PER____
Sedimentary Rocks
You know that Sedimentary Rock forms from sediment.
First define sediment
Small, solid pieces of material that come from rocks or living things___
then name the four processes involved in forming Sedimentary rock.
weathering/erosion deposition compaction
cementation
In layers of sedimentary rock, where would you expect to find the oldest
sediment? Explain your answer.
On the bottom – (answers vary) sedimentary rock is formed when layer after
layer of new sediment is deposited on top of old sediment and then compacts
and cements together, so the oldest sediment would end up in the bottom
layers.
The particles of sediment that make up Shale are not usually well cemented.
Would Shale be a good choice of building material in a wet climate/region/area?
Provide a brief explanation of why or why not.
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Metamorphic Rocks
Under what conditions do Metamorphic rocks form? (explain in your own words
how metamorphic rocks are made.
_____ Heat & Pressure deep beneath the Earth’s surface________
What four (4) characteristics change during the process in which a rock becomes
metamorphic?
1___texture________
2___mineral content_
3___crystal structure_
4___appearance
_
When pressure squeezes rock tightly enough what happens to the mineral grains?
__ They can line up in flat, parallel layers_____________________
How do geologists classify Metamorphic rocks?
by the arrangement of the grains that make up the rocks_____________
Name the two (2) types of classification for Metamorphic rock and give a brief
description of each.
1__foliated______ - ___grains are arranged in parallel layers____
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2__nonfoliated___ - ___grains are arranged randomly_______________
What does the word “metamorphic” mean?
____change of form_____________________________________________
Which might be more useful for carving chess pieces – marble or slate?
___marble_________________
Explain your choice from above.
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Word Bank:
Small, solid pieces of material that come from rocks or living things
Weathering/Erosion
Cementation
Cause
Deposition
The bottom layer
Arranged in Parallel layers
Mantle Appearance
Shale
Diameter Crystal Structure
Change
Processes
Foliated
Crust
Compaction
Earth
Cliffs
Nonfoliated
Heat & Pressure deep beneath the Earth’s surface
Grains are arranged randomly
Texture
They can line up in flat, parallel layers
by the arrangement of the grains that make up rocks Mineral Content