Department of Earth Science |Northeastern Illinois University

ESCI 121

Section 06
Fall 2009

Review Sheet for Exam #2  (October 20, 2009)                                                                                                         Dr. Sanders

For the exam, you should be able to do the following:

Rock Your State!  In-class work

w   Make a list of all the kinds of rocks and sediments found in the states you researched. 

w   For each item on your master list of rocks and sediments, categorize it as a sediment, igneous rock, sedimentary rock, or metamorphic rock

w   For each type of rock (ig, sed, meta), subdivide the group into smaller sub-classifications.

w   Logically organize the information your research reveals about the sub-classifications of igneous, sedimentary, and metamorphic rocks; then, apply it to the description of hand samples.  

w Use your knowledge of rock classification to describe the characteristics of igneous rocks.

w Describe the sub-classifications of sedimentary rocks and metamorphic rocks, and apply that information to hand samples.

w Explain the relationship between minerals and rocks.

w Describe some of the characteristics of minerals that allow us to classify them and discern their properties. 

w Describe how to explore and characterize mineral properties, including color, hardness, density/specific gravity, mineral cleavage, luster, and reaction to acid.

w Use your knowledge of rock classification to describe the characteristics of clastic (detrital) sedimentary rocks.

w Describe the steps in forming sedimentary rocks, including weathering of pre-existing rocks, erosion, transport, deposition, and lithification (including cementation and compaction).

w Describe the characteristics of chemical sedimentary rocks

w List the minerals that can form chemical sedimentary rocks, and tell what rock each one forms.

w Demonstrate how to recognize chemical sedimentary rocks in hand sample.

w List the processes that lead to metamorphism.

w Use your knowledge of rock classification to describe the characteristics of metamorphic rocks.

w Describe the changes that can affect rocks to form metamorphic rocks, including foliation and recrystallization.

w Draw a diagram illustrating the processes and materials involved in the Rock Cycle.  Include igneous, sedimentary, and metamorphic rocks, as well as sediments and magma.

w Geotectonics:  Describe the three kinds of geotectonic plate boundaries, and the geologic features that form at each one.

w Describe the three possibilities for convergent boundaries, including the different combinations of lithospheric plates.

w Describe the plate tectonic setting in which each of the three kinds of rocks form.

Department of Earth Science | Northeastern Illinois University

Copyright 2009 Laura L. Sanders.  Last updated October 19, 2009.