Examveda

What was a geological advantage in building the Channel Tunnel between UK and France?

A. Soft unconsolidated sands

B. High groundwater flow

C. Chalk marl strata

D. Basaltic lava flows

Answer: Option C

Solution (By Examveda Team)

The tunnel was bored through Chalk Marl, which provided good strength, low permeability, and predictable conditions, ideal for long tunneling.

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