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Unit 29: Sedimentary and Metamorphic Rocks
Teacher Questions:
1) In general, which mineral is most abundant in sandstone?
a) obsidian glass
b) feldspar
a) calcium carbonate
b) quartz *
2) A common chemical sedimentary rock is:
a) sandstone
b) shale
c) halite *
d) limestone
3) Layers composed of similar characteristics that distinguish it from juxtaposed layers is
a) bedding planes
b) strata *
c) stratigraphy
d) stratification
4) Unconformities are breaks or gaps in the rock record and may be formed by a(n):
a) erosional event
b) non-depositional event
c) both (a) and (b) *
d) none of the above
5) Common table salt is also known as:
a) anhydrite
b) gypsum
c) halite *
d) limestone
6) Sedimentary and igneous rocks can be changed by heat and/or pressure into a
metamorphic rock, but metamorphic rocks cannot change into another rock.
a) true
b) false *
7) Marble is a metamorphic that comes from the parent rock _____.
a) mica schist
b) sandstone
c) limestone *
d) shale
8) Contact metamorphism are rocks that have been change by:
a) stress
b) strain
c) heat *
d) pressure
9) Only sedimentary and igneous rocks can be metamorphosed.
a) True
b) False *
10) While studying a stratigraphic section, a peculiar rock is found in one of the strata. It is
made up of rounded pebbles of various sizes that are set within a sand-like
matrix. What is the rock name and what processes would best explain its formation?
a) Rocky Sandstone; underwater landslide and then brought to the shoreline by large
b) Breccia; landslide deposit, buried and then cemented together
c) Conglomerate; transported by water, deposited, compacted, and cemented together
d) Pebblestone; periodic flooding, transported, deposited followed by drought
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