{ Sedimentary Rocks. Aim: How do we classify and evaluate sedimentary? How do we classify and...
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Transcript of { Sedimentary Rocks. Aim: How do we classify and evaluate sedimentary? How do we classify and...
{
Sedimentary Rocks
Aim: How do we classify and evaluate
sedimentary? Learning Target:
I CAN explain how rocks are formed and on what basis they are classified
Aim & Learning Target
Open your Reference Tables to the Sedimentary Rock Scheme
Do Now
Do Now Check:
Read the following statement: You find a rock on your way home, you think it might
be a sedimentary rock because you see fossils embedded inside it.
Thumbs up you agree Thumbs down you disagree
ALL ROCKS are composed of MINERALS!
RECAP:
WEATHERING (can be caused by rain wind, water) breaks down rocks into sediments
Examples of sediments: Sand Pebbles Silt clay
FORMATION OF SEDIMENTARY ROCKS
SETTLE in a process called deposition.
MOVE in a process called erosion
What happens to sediments?
PRESSED together under many layers of sediment called compaction
Dissolved minerals CRYSTALLIZE AND STICK TOGETHER in a process called cementation.
What happens to sediments?
sedimentary rocks
The result =
May contain chunks of other rocks
May contain shells
May contain fossils
Sometimes layered, but the layer are
similar in color
Characteristics of Sedimentary Rocks
Page 7. What does it tell us about sedimentary rocks?
What pg of the ref table can you find the Scheme for Sedimentary Rock identification?
Texture Grain size Composition Rock names Map symbol
What does it tell us about
