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Geology Overview week 1

by: Katie Thedford

Geology Overview week 1 20841

Marketplace > Fort Lewis College > Geology > 20841 > Geology Overview week 1
Katie Thedford

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About this Document

These notes cover Geology 101 main points and vocab from the first week of lectures
Geol 113-2
Allie Jackson
Class Notes
Geology, era, Eon, period




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This 5 page Class Notes was uploaded by Katie Thedford on Thursday September 8, 2016. The Class Notes belongs to 20841 at Fort Lewis College taught by Allie Jackson in Fall 2016. Since its upload, it has received 4 views. For similar materials see Geol 113-2 in Geology at Fort Lewis College.


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Date Created: 09/08/16
Geology overview GEO- earth LOGOS-study or logic Physical Geology- Earth’s materials and processes. Physical geologists study rock and mineral formation, active erosion, volcanic eruptions, and earthquakes. They also assist in the search for natural resources like oil and natural gas. Historical Geology- Preserved evidence and earth dating. Historical geologists reconstruct past landforms such as Pangea and look for evidence of past flooding in an area.  Geologist can’t usually use the traditional scientific method as direct observation or experimentation is sometimes not possible. Edited geologic method: 1. Questions about a phenomenon 2. Attempt to make an observation 3. Creation of multiple hypothesis 4. Test hypothesis/ find inactive or older subject James Hutton- Known as the father of geology  Suggested that the earth was much older than originally stated by the church.  Stated that processes occurring in the present were the same that had been occurring since the beginning. Uniformitarianism- “The present is the key to the past” Similar unconformity- When visiting Siccar point in Scotland Hutton noticed two different directions of pattern in the rocks. This showed that there was a small effect after a long period of time instead of a large effect after a short period of time. The layers present a break in geologic time such as what is presented in the Grand Canyon. Vocab and symbols  GA- billion  MA-million  KA-thousand  Eon- measured in billions of years, longest time unit (1/2 billion years or more)  Era- Divides eons by the fossils found in rock, Jurassic,riassic… (several 100 million years)  Epochs-divides periods into some significant development or series of developments  Period- Not classified as geologic time simply a way to divide epochs (10-100 million years)  Precambrian- The first time period, few fossils found during this time. period of time that extends from about 4.6 billion years ago (the point at which the Earth began to form) to the beginning of the Cambrian Period.  Paleozoic- divided into 7 periods. Began 541 million years ago with the Cambrian explosion and ended about 252 million years ago with the End- Permian extinction.  Cenozoic- “the age of animals” began approximately 65 million years ago and continues today . Divides into 2 periods and 7 epochs  Mesozoic- “boom of life” Began approximately 245 million years ago and divided into 3 periods  Quaternary-Started with the last ice age and continues to present time  a unit of time within the Cenozoic Era.


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