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Exercise 6
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1) What is the Dunham and Embry and Klovan texture classification term for the carbonate rock in the image?
Floatstone/Wackestone
Rudstone/Packstone
Rudstone/Grainstone
Correct!
Wrong!
2) What are the coated grains in the image?
Oncoids
Aggregate grains
Pisoids
Correct!
Wrong!
3) What skeletal fragments are at the nuclei of the coated grains?
Bivalves
Brachiopods
Gastropods
Correct!
Wrong!
4) What is the Dunham texture classification term for the carbonate rock in the image?
Packstone
Boundstone
Grainstone
Correct!
Wrong!
5) What are the grains in the image?
Oncoids
Aggregate grains
Pisoids
Correct!
Wrong!
6) what is the skeletal grain on the centre left of the image?
Foraminifer
Gastropod
Coral
Correct!
Wrong!
7) What is the Dunham classification term for the carbonate rock in the image?
Grainstone
Packstone
Rudstone
Correct!
Wrong!
8) How many types of cements are visible in the image?
Two
One
Zero
Correct!
Wrong!
9) What is the Dunham classification term for the carbonate rock in the image in crossed polarisers?
Floatstone
Wackestone
Grainstone
Correct!
Wrong!
10) What type of cement binds the grains?
Burial drusy sparite
Vadose meniscus cement
Blocky sparite
Correct!
Wrong!
Exercise 6
This is a recap of your answers. Red = wrong anser Green= right answer
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