geology \Ge*ol"o*gy\, n.; pl. Geologies. [Gr. ge`a, gh^, the earth + -logy: cf. F. g['e]ologie.]
1. The science which treats:
(a) Of the structure and mineral constitution of the
globe; structural geology.
(b) Of its history as regards rocks, minerals, rivers,
valleys, mountains, climates, life, etc.; historical
(c) Of the causes and methods by which its structure,
features, changes, and conditions have been produced;
dynamical geology.
2. A treatise on the science.

When I was a kid, I was always picking up rocks. They looked interesting. I guess that spurred my interest in Geology. It's fascinating to figure out how the world works. What causes earthquakes? What is plate tectonics? What was Pangea? Geology answers (or tries to) them all. That's what's so interesting.


Geological Society of America
US Geological Survey


International Seismological Centre
USGS Earthquake Hazards Program
USGS National Earthquake Information Center


Dinosauria On-Line
The Palaeontological Association

The Paleontological Society


USGS Volcano Hazards Program