Name _______________________
GEOL 1312
HOMEWORK #1 – Basic Geology Concepts
Due Monday, February 21st IN CLASS
Answers to the questions must be given in complete sentences (except where indicated), using
correct grammar and spelling. Please be as brief and to-the-point as possible (more is not
necessarily better).
Please use your notes and textbook as references. You are encouraged to explore the web for
help but do not copy directly from websites.
Homework assignments must be legible. Handwritten or typed responses are permitted. Make
sure that your assignment is stapled!
Grading Summary:
Questions 1:
6 points
Question 2: 22 points
Question 3: 7 points
Question 4:
5 points
Total: 40 Points
Name _______________________
GEOL 1312
1. The Rock Cycle Basics (6pts)
A.
Provide a short definition (1-2 sentences) of an igneous rock. (2pts)
B. Provide a short definition (1-2 sentences) of a metamorphic rock. (2pts)
C. Provide a short definition (1-2 sentences) of a sedimentary rock. (2pts)
2. Identify Rock Types (24pts)
Given the following images & descriptions (below, and on the following page), identify each
example as an igneous, metamorphic, or sedimentary rock or process (3pts each).
A. ______________________
B.
_________________________
C. ______________________
D.
_________________________
E. ______________________
F.
_________________________
G. ______________________
H.
_________________________
A.
B
.
Sandstone Arch, Arches National Park, Utah.
Granite countertops!
GEOL 1312
C.
Glowing lava from Kilauea volcano, Hawaii.
E.
Limestone on Mount Everest, Tibet.
G.
Serpentinite discovered at 2 km depth, near the San
Andreas Fault tectonic boundary, California.
Name _______________________
D.
Uplifted gneiss near Marble Falls, Texas.
F.
A granitic remnant “volcanic neck” at Big Bend
National Park, Texas
H.
Basalt being collected from an underwater volcano
off the coast of California (Davidson seamount).
Name _______________________
GEOL 1312
3. Elements, Minerals, and Rocks (5pts)
Match the following terms with the definitions below.
clastic sedimentary rock
_____
extrusive igneous rock
_____
bioclastic sedimentary rock _____
intrusive igneous rock
_____
organic sedimentary rock
mineral
_____
_____
chemical sedimentary rock _____
A.
B.
C.
D.
A rock that consists of lithified organic remains of plants or animals.
A rock composed of lithifiied clastic sediment.
A rock that forms when magma erupts and solidifies on the surface.
A substance that is solid, has a crystalline structure, occurs naturally, is inorganic, and has a
chemical composition.
E. A rock composed of broken shell fragments and similar remains of once-living organisms.
F. A rock that forms when magma cools within the crust.
G. A rock that forms by direct precipitation of minerals from solutions.
4. True or False? (5pts)
A. Rocks that cool slowly grow larger crystals.
T
F
B. Heating is required to make a sedimentary rock.
T
F
C. A fool-proof way to identify a mineral is through its color.
T
F
D. Pearls are minerals.
T
F
E. Burial metamorphism is a metamorphic process that involves the burial of rocks in a
T
F
sedimentary basin.