Beginning of Essay
Our story starts back before the Miocene Age. Little is known about this time, however what we do know is that the shore line was much further in than it is now on the west coast; In fact back then the ocean was totally covering what we now know as Oregon. In th ....

Middle of Essay
.... from the Deschutes formation because of the coarseness of the Deschutes compared to the Sintustus. There was then a break in geologic activity of about 5 million years landing us around 8 million years ago. This is when the new Cascades were created. The new Cascades caused there to be a great difference in the climate on the West Side and the East Side of the mountain range. Our field trip started by driving through the city of Bend and its geology. In Bend there are two Buttes. There is Pilot Butte, which is the oldest, and there is Awbrey Butte. Pilot Butte is a composite cone with no crater. This Butte is surrounded by older lava from the N ....