geologist

n. one who specializes in geology, one who studies the history and development of the Earth's crust

A geologist is a contributor to the science of geology, studying the physical structure and processes of the Earth and planets of the solar system (see planetary geology).
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Noun
1. a specialist in geology
(hypernym) scientist, man of science
(hyponym) geophysicist

(n.)
One versed in the science of geology.
  

n.
ماہر علم طبقات ارض, عالم ارضيات, دھرتي بديا جاننے والا