For six years he participated in various geological expeditions.

Basedow also published his account of a 1916 geological expedition to the western Kimberley.

They expressed hope that the geological expedition would be successful in tracking down the critical ores.

A geological expedition has identified the exact place of the original discovery and found more specimens.

Lyell and Hughes went on many geological expeditions together.

In 1910-1911 he led a geological expedition to Timor.

He also worked as a medic for a geological expedition, even though he had no medical degree or real experience.

Either that, or another one of those geological expeditions investigating the crater.

Briffe was the leader of some sort of geological expedition, and I wondered what one did in a case like this.

Later, he took part in geological expeditions and guided tours of an open-air museum near Moscow.