The intensity of regional metamorphism may be recognized by:

a. index of recrystallization.
b. index fossils.
c. index minerals.
d. index polymorphs.
e. index cards.


C

Environmental & Atmospheric Sciences

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Olivine is often found in ultramafic and mafic igneous rocks, but not felsic. Explain why you wouldn't expect to find olivine form inside a granite or rhyolite

What will be an ideal response?

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________ are topographic "steps" on both sides of a river valley resulting from river entrenchment into its own floodplain

A) Entrenched meanders B) Oxbow lakes C) Nickpoints D) Levees E) Alluvial terraces

Environmental & Atmospheric Sciences

The imaginary plane that is perpendicular to the axis of rotation and is halfway between the poles called the ________

Fill in the blank(s) with the appropriate word(s).

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Since the Earth has density stratified layers, which layer would be the densest?

a. The outer core b. The mantle c. The inner core d. The crust

Environmental & Atmospheric Sciences