Concept Quiz: Igneous Rocks Name:________________________________ Lab Section:___________________ Score: ____________ Questions 01 through 10: For each of the following statements indicate the figure that best fits (either A or B). If both figures fit the statement than mark C: Combined. If neither figure applies to the statement than mark: D: Doesn't apply. (Note: Figure B has a very dark fine-grained groundmass.) Figure A Figure B 01. Found in the Sierra Nevada batholith. 02. Formed deep within the crust of the earth. 03. Formed at the earth's surface. 04. Of these two samples one most likely formed from magma generated at a subduction zone. (Hint that means one of the samples must be "most likely"). 05. Formed by slow cooling of magma. 06. Formed from magma generated at a divergent margin, without any assimilation or differentiation (fractional crystallization). 07. Could have formed from a magma generated by partial (fractional) melting of the asthenoshpere. 08. Could have formed from a melt that has undergone either differentiation (fractional crystallization). or assimilation or both. 09. Formed from cooling lava flows on the side of a shield volcano. 10. Formed directly from the eruption of material from a composite volcano