Part 2: Sedimentary Rock Identification
Use the basic physical properties of sedimentary rocks from
Chapter 7
in the textbook and the attached sedimentary rock
classification chart
to identify the rock in each video linked in the Canvas assignment page. Some properties are hard to see in the
videos or can help you ID unknowns, so I’ve filled them in for you. Remember, carbonate rocks like limestone or those with lots of
calcite shell fragments effervesce with HCl.
Sample
ID
(Video #)
Clastic or
Chemical/Nonclastic
?
Texture
Composition
Sorting
(Poorly = lots of
grain size
variation. Well
= grains are
mostly the
same size)
Additional
information
Rock Name
(Very coarse, coarse,
medium, fine, very fine,
or microcrystalline for
some chemical
sedimentary rocks)
List mineral(s) present like
calcite, quartz, clay
minerals; also if fossils
present (use Classification
Chart below)
Very poorly,
poorly,
moderately,
well, or very
well, for
clastic only
1
--
2
Effervesces
with HCl acid
3
Effervesces
with HCl acid
4
--
5
--
6
Contains
sulfate
7
--
8
Effervesces
with HCl acid
2
