Page 194 - Laboratory Manual in Physical Geology
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2. What is the grain roundness at each of the following locations?
A.
B.
C.
3. In general, would you describe the sediment in these images as detrital (siliciclastc), biochemical, or chemical? Why?
4. Name the kind of rock that the sediment in each image would form if it became lithified ( FIGURE 6.9 , Step 3).
A.
B.
C.
D.
5. Notice the yellow-orange color of the sedimentary grains at Location B. What is the yellow-orange material and where did
it come from?
6. Each image is a photograph of materials that are the product of chemical and physical sedimentary processes. For each
image, list the processes that must have occurred to form the sediment.
A. C.
B. D.
B. REFLECT & DISCUSS Based on your work, write a sentence that describes what happens to detrital (siliciclastic) sediment
with distance from its source. Then describe how you could use your statement to interpret detrital (siliciclastic) rocks.
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