sedimentary rocks. sedimentary rocks form in 1 of 3 ways: 1. clastic sedimentary rocks- made of...
TRANSCRIPT
Sedimentary Rocks
Sedimentary RocksSedimentary rocks form in 1 of 3 ways:
1. Clastic Sedimentary Rocks- made of pieces and grains of other rocks. Material such as sand or mud
-usually deposited in water
Conglomerate sandstone
Sedimentary Rocks2. Chemical Sedimentary Rocks- deposited in water from chemicals and minerals in the water.
-limestone is deposited in water from calcite
Sedimentary Rocks
• 3. Organic sedimentary rocks- made up of remains of plants or animals.
–Chalk is made from tiny shells–Coal is made from ancient plants
Other sedimentary Features1. Fossils- can be very common in sedimentary rocks
2. Nodules- (concretions) are ball-shaped rocks formed around a hard center object such as a sand grain
3. Geodes- hollowed out nodules with crystals filling the center area. Crystals are usually quartz
Sedimentary RocksRock Name Formation Composition Other Features/Color
1. Sandstone clastic sand grains rust color(iron)
Sedimentary RocksRock Name Formation Composition Other Features/Color
2. Shale clastic mud “mud stone”, layers
Sedimentary Rocks
Rock Name Formation Composition Other features/color
3. Conglomerate clastic rocks,cements natural cement
Sedimentary Rocks
Rock Name Formation Composition Other features/color
4. Coal organic ancient plants black, carbon
Sedimentary Rocks
Rock name formation composition other features/color
5. Limestone chemical calcite caves
Sedimentary Rocks
Rock name formation composition other features/color
6. Nodule clastic sand grains desert rose
Sedimentary Rocks
Rock name formation composition other features/color
7. Geode clastic quartz crystals hollow “earth stone”
Sedimentary rocks
Rock name formation composition other features/color
8. Agate clastic quartz “melted quartz”
Sedimentary RocksRock Type formation composition other features/color
9. Jasper clastic quartz reddish brown
“Jasper”
Sedimentary Rocks
Rock Type formation composition other features/color
10. Chert clastic quartz brown, arrowheads
Quiz: Sedimentary RocksWhat you should know
- You should be able to identify the 10 sedimentary rocks- You should know which are clastic, chemical, and organic- You should know how clastic, chemical, and organic rocks form- What is a nodule? A fossil? A desert rose? A geode?- What is the mineral usually inside geodes?- What are the 3 agates we learned? - What was my dog’s name? Why?- What mineral is limestone made of? What mineral are quartz,
jasper, and chert made of?- What is sandstone made of? What is shale made of?- What rock is also called earthstone? Which is also called
mudstone?- You MUST pass quiz to be able to the next 2 labs in class
On back of quiz paperWhat are the 3 kinds of sedimentary rocks?
18. __________________19. __________________20. __________________