Question

Rank the following steps describing how a clastic sedimentary rock forms from its pre-existing parent rock.

from first to last
a) weathering,
b) erosion,
c) transportation,
d) deposition,
e) lithification

Answer 1

Clastic sedimentary rocks are formed in a process that begins with weathering, followed by erosion, transportation, deposition, and finally lithification of the sediment.

Step-by-step explanation:

The formation of clastic sedimentary rocks from pre-existing parent rocks involves a sequential process. Following the correct order:

1. Weathering - Pre-existing rock undergoes both chemical and mechanical weathering.
2. Erosion - The weathered particles are then eroded, meaning they are detached and moved from their original location.
3. Transportation - These particles are carried away through various agents like water, wind, or gravity.
4. Deposition - The particles settle out in a new location when the movement energy is not strong enough to carry them further.
5. Lithification - Finally, the deposited materials are compacted and cemented over time, forming a solid rock.

Different minerals contained in rocks, such as quartz and feldspar, exhibit varying levels of resistance to weathering and erosion, influencing the composition of the resultant sedimentary rock.