What is Geology?
(Week 1, September 9 , 2013)
Geology: a science that deals with the history of the earth and its life especially as
recorded in rocks. The science deals with the materials that make up the earth(rocks and
minerals), the processes acting within the earth and at it’s surface, and the history of the
Physical Geology: involved with the processes that act to form the earth and the products
of those processes(ex, minerals, rocks, plate tectonics, earthquakes and volcanoes).
Historical Geology: involved with the interpretation of the history of the earth. Based on
the recognition of the signature of changing environments over time, as preserved in the
rock record. Environmental interpretation of rocks + age rocks = earth history.
Environmental interpretation in the present is the key to the past. Relative age versus
absolute of rocks.
Age of Ro