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Geological Engineering · Q79

Introduction to Geological Engineering

Engineering and GATE · Geological Engineering · question 79

Q79

Which technique is used to map subsurface layers without excavation?

A.
Seismic survey
Answer
B.
Petrographic analysis
C.
Hand augering
D.
X-ray diffraction

Answer: Option A

Solution

Answer: Option A
Solution:
A seismic survey uses the propagation of seismic waves to map subsurface geological structures.It is commonly used in site investigations and oil exploration. Correct Answer: Seismic survey.