Regents Earth Science
Period_____
Lab 13: Sedimentary Rocks
SEDIMENTARY ROCK IDENTIFICATION CHART
Texture
Grain Size or Appearance
Comments / Composition
Description of Sample
Name of Rock
(use ESRT)
Questions:
1. Why do sedimentary rocks often contain fossils?
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2. Why do rock gypsum and rock salt usually lack layers, grains, and fossils (think how the form)?
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3. Give the range of size for the following (ESRT p.6):
a. Cobble
Minimum: _______________ Maximum: ________________
b. Pebble
Minimum: _______________ Maximum: ________________
c. Sand
Minimum: _______________ Maximum: ________________
4. How can you distinguish a clastic rock like sandstone from a crystalline rock like rock salt?
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5. Describe the steps involved in the formation of sedimentary rocks (aka: LITHIFICATION……use
rock cycle, p.6 ESRT).
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6. Draw a pebble at its largest size.