1. Lab # 7 – Sedimentary Rock Identification
Due 11/10
Procedure -
Use the pictures that follow to help you identify the 8 rock samples.
USE THE FLOW CHART on the back of the lab packet to identify each rock NAME.
A word bank is provided on slide 6
Use your ESRT for the questions

2. Sample # 1 -
Sample # 2 -
Grain Size –
> cm
Grain Size – cm

3. Sample # 3 -
Sample # 4 -

4. Sample # 5 -
Sample # 6 -

5. Sample # 7 -
Sample # 8 -
Bubbles with acid
Grain Size – cm

6. Clastic, Chemical, Or Organic Method of Lithification
Word Banks
Clastic, Chemical, Or Organic
Method of Lithification
Rock Name
Chemical
Organic
Clastic
Precipitated
Formed from plants
Cemented shells
Cemented particles
Breccia
Siltstone
Shale
Conglomerate
Coal
Chemical Limestone
Sandstone
Organic limestone

7. Sedimentary Rock Identification Flow Chart
Does it show visible particles?
Yes No
Can you see shells?
Does it have thin flat layers?
yes no
Mixed pebbles and smaller
rounded fragments
yes no
Describe the particles?
Very Fine Grained – one color
Can it be scratched by a finger nail?
Sand
Angular fragments
Fine Grained
Feels rough - layers
yes no
Feels smooth – dull appearance
Whole shells and or other fossils – acid test
Fine Grained – acid test
Breccia
Chalk
Black – light weight - Shiny
Sandstone
conglomerate
Fossil Limestone
Limestone
Shale
Coal
siltstone
Organic
Organic
Clastic

9. Lab Reflection Lab # 7 – Due 11/20
What was the problem or purpose of the lab?
What did we do during class?
Describe how sedimentary rocks form?
What are some characteristics that are dominate in sedimentary rocks?
How can you go further?, Why did we do the lab?, How does it relate to your life?