Several geological factors may explain this apparent discrepancy.

Madeleine was surrounded by maps of the country, making notes of the geological factors.

The term "biogeochemical" tells us that biological, geological and chemical factors are all involved.

Several geological factors have played a vital role in the formation and existence of these subterranean water bodies.

This is due in part to numerous geological factors; The ranges usually have few to no foothills and rise directly from valley floors.

Five geological factors have to be present for a prospect to work and if any of them fail neither oil nor gas will be present.

The aim of such procedures is to force the geologist to objectively assess all different geological factors.

Aquifers are underground rivers and they do move depending upon a whole lot of geological factors.

While this explanation links the problem more to environmental and geological factors, mankind also plays a large role in the problem.

He was part of several explorations, during which he studied various geological factors that would later bring him fame.