Which choice below shows the steps of the formation of sedimentary rock in the correct order?
A.
compaction/cementation erosion weathering deposition
B.
erosion weathering deposition compaction/cementation
C.
weathering erosion deposition compaction/cementation
D.
weathering erosion compaction/cementation deposition
C. weathering erosion deposition compaction/cementation
The correct order of steps in the formation of sedimentary rock is:
C. weathering erosion deposition compaction/cementation
To determine the correct order of the formation of sedimentary rock, we first need to understand the processes involved.
1. Weathering: This is the process by which rocks are broken down into smaller pieces by various factors such as wind, water, and temperature changes.
2. Erosion: This refers to the transportation of the weathered rock particles from their original location to a different place. It usually occurs through the action of wind, water, or ice.
3. Deposition: Once the weathered rock particles are transported to a new location, they settle down and accumulate in layers. This process is called deposition.
4. Compaction/Cementation: Over time, as more and more sediment accumulates, the weight of the sediments above compresses the layers at the bottom. This compaction squeezes the sediments together, reducing the space between them. Cementation occurs when minerals like silica or calcite are deposited in between the sediments, binding them together to form solid rock.
Now, let's review the given choices:
A. Compaction/cementation, erosion, weathering, deposition
This choice has the incorrect order because compaction/cementation should occur after deposition.
B. Erosion, weathering, deposition, compaction/cementation
This is the correct order. Erosion happens first, followed by weathering, deposition, and finally compaction/cementation.
C. Weathering, erosion, deposition, compaction/cementation
This choice has the incorrect order because deposition should come before compaction/cementation.
D. Weathering, erosion, compaction/cementation, deposition
This choice has the incorrect order because compaction/cementation should occur after deposition.
Therefore, the correct choice is B. erosion, weathering, deposition, compaction/cementation.