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Chapter 5 Section 2 Study Guide: Sedimentary Rocks
HR:
Sedimentary Rocks form from particles deposited by water and wind.
Sand grains, mud and pebbles are some particles.
Small, solid pieces of material that come from rocks or living things.

What is the sequence of processes that forms sedimentary rocks?
 Erosion
Wind
Water
Ice
 Deposition
Sediment settles out of the water, wind or ice carrying it.
 Compaction
Process that presses sediments together.
Year after year new layers form.
Minerals slowly dissolve.
 Cementation
Process by which dissolved minerals crystallize and glue particles of sediment together.

What are the three major groups of sedimentary rocks?
1) Clastic Rocks-Forms when rock fragments are squeezed together. a.
Grouped by size of fragments. b.
Common clastic rock-
shale- formed from clay.
c. Sandstone- formed from the
Compaction and cementation
Of sand. c.
Conglomerate and Breccia-
Formed from a mixture of
Rock fragments.
2) Organic –Forms from the remains of plants and animals deposited in thick layers. a.
Coal b.
Limestone
3) Chemical rock- Forms when minerals are dissolved in a solution and crystallize.
Sandstone and limestone are used for building materials
 Can be easily cut.
 Limestone is used for making cement.
Uses of Sedimentary rocks