Quiz #7

12 September 2011

S.I. Session 7 Quiz

This quiz covers material from the lecture on Friday, September 9^th.

Part a) Match the term to its definition:

                TERMS:

a) Basalt                               b) Mafic                                               c) Fractional Crystallization

d) Peridotite                      e) Quartzite                                        f) Ore Body

g) Felsic                                                h)Porphyry                                         i) Granite

                DEFINITIONS:

1)__This rock tends to be coarse grained and intrusive.

                                2)__This is an economic concentration of a mineral.

3)__This rock tends to be fine grained and extrusive.

4)__This rock is the metamorphosed version of sandstone.

5) __ This term describes a rock that is composed of a mixture of coarse grained and fine grained materials.

6) __ This term describes an iron rich rocks like basalt and gabbro.

7) __ This term describes a rock that is rich in silica like granite or rhyolite.

8) __ This rock is classified as ultramafic.

9) __ This term refers to the manner in which minerals crystallize in an ordered series as magma cools.

Part b) Classify the Following rocks as either Felsic, Intermediate, Mafic, or Ultramafic:

               

1)      Diorite

2)      Peridotite

3)      Gabbro

4)      Basalt

5)      Granite

6)      Dacite

7)      Andesite

8)      Rhyolite

9)      Granodiorite

Part c) True or False:

                Mark T (true) or F (false) in the blank provided:

                                1)__Phenocrysts indicate mixed fast and slow cooling.

2)__Granite forms above ground.

                                3)__ Palisades Cliffs New York is an example of fractional crystallization.

4)__Gold and Copper are native elements that appear unbonded.

5)__ Hydrothermal vein deposits result from interaction of igneous processes with the stratosphere.