Transcript Sedimentary Lab Powerpoint

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
Sample # 1 -
Grain Size –
> .0004 cm
Sample # 2 -
Grain Size –
.0006 - .2 cm
Sample # 3 -
Sample # 4 -
Sample # 5 -
Sample # 6 -
Sample # 7 -
Bubbles with acid
Sample # 8 -
Grain Size –
.0004 - .006 cm
Word Banks
Clastic, Chemical,
Or Organic
Method of
Lithification
•Chemical
• Precipitated
•Organic
•Formed from
plants
•Clastic
•Cemented
shells
•Cemented
particles
Rock Name
•Breccia
•Siltstone
•Shale
•Conglomerate
•Coal
•Chemical
Limestone
•Sandstone
•Organic limestone
Sedimentary Rock Identification Flow Chart
Does it show visible particles?
Yes
No
Can you see shells?
yes
Does it have thin flat
layers?
Mixed pebbles
and smaller
no
Describe the particles?
Fine Grained
Whole shells
and or other
fossils – acid
test
Feels rough layers
Feels smooth
– dull
appearance
no
Can it be
scratched by a
finger nail?
yes
no
Fine Grained –
acid test
Breccia
Chalk
Black – light
weight - Shiny
conglomerate
Sandstone
Fossil
Limestone
Shale
siltstone
Organic
Very Fine
Grained – one
color
Angular
fragments
Sand
yes
rounded
fragments
Limestone
Coal
Organic
Clastic
Lab Reflection
Lab # 7 – Due 11/20
1. What was the problem or purpose of the lab?
2. What did we do during class?
3. Describe how sedimentary rocks form?
4. What are some characteristics that are
dominate in sedimentary rocks?
5. How can you go further?, Why did we do the
lab?, How does it relate to your life?