Difficulty: Easy
Correct Answer: Weathering → transportation → deposition → upheaval
Explanation:
Introduction / Context:
The geologic cycle describes how rocks break down into soils, get transported and deposited, and then are uplifted and exposed again. Recognizing the typical sequence helps civil engineers interpret soil profiles, depositional environments, and anticipated geotechnical properties such as density, grading, and fabric.
Given Data / Assumptions:
Concept / Approach:
Rock first undergoes weathering near the surface, producing soil and detritus. Agents then transport particles to new locations where they are deposited as layers with characteristic sorting and stratification. Tectonic forces may later uplift these deposits, exposing them to renewed weathering and continuing the cycle. This idealized sequence matches many surficial geology observations relevant to siting foundations and earthworks.
Step-by-Step Solution:
Verification / Alternative check:
Regional geomorphology and stratigraphy commonly show weathered bedrock overlain by transported and deposited sediments, later tilted or uplifted by tectonics.
Why Other Options Are Wrong:
Sequences starting with upheaval or transportation before weathering invert the causal order; deposition cannot precede weathering of source rock.
Common Pitfalls:
Assuming a single pathway; in reality, local cycles may skip steps or repeat sub-steps, but the canonical order remains as given.
Final Answer:
Weathering → transportation → deposition → upheaval
Discussion & Comments