Questions Are just one word Answer Q- What is the average silica content in eart

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Questions Are just one word Answer

Q- What is the average silica content in earth's mantle?

Q- What Period/Eon are the Oldest oceanic crust/Continental crust from? ( Both )

Q- What type of primary magma is only known from the Archean?

Q- What are the temperature of crstallisation for both Mafic and felsic rocks and their Sio2 content?

Q-Which mineral defines Eclogite facies metamorphism?

Q- What style of metamorphism Produces Deformed grains called augens?

Q- What term is used to describe the oldest stable interiors of the continents?

Q-What is the process called that causes the change in silicate structure towards more complex structure ( Bowens reachion series)

Q- Explain Barrovian and Buchan Style mineral assembleages

Q- Why is mica common in water lain sediments but not wind blown sediment?

Q- What textural and compositional features would you expect sediments deposited by glaceirs to have?

Q- give a rock type that would exsist in both proximal and distal Envirment

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Explanation / Answer

1. 48%

2. 270 Ma, 260 Ma, both from Mesozoic era

3. Komatitte magma

4.

5.

6. regional metamorpohsis

7. Craton

8. Bowens reachion series

9. Barrovian zones are metamorphic zones that describe the changes in metamorphic mineral assemblages that occur in regionally metamorphosed pelitic rocks. Buchan metamorphism is similar to Barrovian but has elevated temperatures. With increasing temperature these minerals are chlorite, biotite, garnet, staurolite, kyanite, and sillimanite

10.

11.

12. Sedminentary

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