Examkin

Soru

Zorluk: OrtaWeathering and Mass Wasting Processes

In humid tropical regions with heavy seasonal rainfall, intense chemical alteration of granite bedrocks produces deep, clay-rich regolith layers in situ. Following a prolonged rainstorm, a large volume of this water-saturated regolith suddenly loses cohesion and moves rapidly downhill under the direct influence of gravity. Which of the following processes accounts for this rapid downhill movement of the saturated regolith?

  1. A
    Hydrolysis
  2. MudflowCevap
  3. C
    Frost shattering
  4. D
    Metamorphic recrystallization

Cevap

Mudflow
The scenario describes mass wasting where gravity pulls heavy, water-saturated weathered material down a slope. A mudflow specifically refers to the rapid movement of fine-grained, highly saturated regolith down steep slopes after intense rainfall.

Adım Adım Çözüm

1
Distinguish between weathering and mass wasting mechanisms described in the scenario.
Chemical weathering (hydrolysis) formed the clay-rich regolith in situ, whereas gravity caused the subsequent downhill movement.
Weathering involves stationary breakdown, while mass wasting involves downslope displacement driven by gravity.
2
Identify the specific mass wasting type matching the movement characteristics.
A rapid movement of heavily saturated, fluid-like clay regolith following heavy rainfall is categorized as a mudflow.
Mudflows occur when fine-grained weathered material becomes saturated with water and rapidly flows down slopes.

Anahtar Kavram

Mass wasting processes vs. in-situ weathering
Tahmini Süre:1m 15s
Bu soruyu puanla

Konular

Weathering and Mass Wasting Processes

Bu konudan daha fazla soru