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Cornell Notes Sedimentary Rock p.102-105
Sedimentary Rock
Strata
p.1
 Wind, water, ice, sunlight,
and gravity all cause rock
to physically weather into
fragments.
 Through the process of
erosion these rock and
mineral fragments called
sediment from one place to
another.
 The sediment is deposited
in layers. Older layers
become compacted and
bind together to form
sedimentary rock.
 Forms near the earth’s
surface.
 Forms without heat and
pressure.
Layers of rock.
3 Classifications of Sedimentary Clastic
Rock
 Forms when rock or
mineral fragments, called
clasts, are cemented
together by a mineral like
calcite or quartz.
 Classified by the size of the
fragments from with the
rock is made.
Sedimentary Rock Continued
p.2
 Grain size can be
Coarse-grained
Medium-grained
Fine-grained
Chemical
 Forms from solutions of
dissolved minerals and
water.
 Rainwater slowly makes its
way to the ocean, it
dissolves some of the rock
and mineral that it passes
through. Some of the
dissolved material
eventually crystallizrs and
forms the minrals that
make up chemical
sedimentary rock.
 Halite is a chemical
sedimentary rock made
from sodium chloride, NaCl,
or table salt.
Organic
 Most limestone forms from
the remains of fossils of
animals that once lived in
the ocean. Over time the
skeletons of these sea
animals collect on the
ocean floor and eventually
become cemented
Sedimentary Rock Continued p. 3
together to form
fossiliferous limestone.
Stratification
The process in which
sedimentary rocks are arranged
in layers. Strata differ from one
another depending on the kind,
size and color of their sediment.