Notes in GEOL 135: Earth History

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Published	04/15/2023	This is the name used for the area watered by the Euphrates and Tigris.
Published	04/15/2023	Cave paintings in Lascaux, France were created during the {{c1::Upper Paleolithic}} Period.
Published	04/15/2023	What is the first evidence of written records of human history?
Published	04/15/2023	What is the age of the Earth?
Published	04/15/2023	Recorded human history is only {{c1::0.004%}} of the Earth's history.
Published	04/15/2023	The Precambrian comprises {{c1::87%}} of the Earth's history.
Published	04/15/2023	{{c1::Hadean}} is not considered a geologic time period. Why?
Published	04/15/2023	Most fossils are in the Phanerozoic eon. What are the three (3) eras in this eon?
Published	04/15/2023	What are the three (3) eons or divisions under the Precambrian?
Published	04/15/2023	The first rocks on Earth are dated {{c1::3.8 to 4.2}} billion years old.
Published	04/15/2023	The most visible life in the late Archaean to the Proterozoic is {{c1::blue-green algae or cyanobacteria}}.
Published	04/15/2023	What do blue-green algae produce?
Published	04/15/2023	The sudden explosion of soft-bodied organisms occured in which geologic period?
Published	04/15/2023	This period marks the boundary between the Proterozoic and Phanerozoic eons.
Published	04/15/2023	Why should you study the Earth's history? Give four (4) reasons.
Published	04/15/2023	The earth is a {{c1::dynamic}} system.
Published	04/15/2023	Before the Renaissance, what are two (2) main influencers of scientific thought?
Published	04/15/2023	A {{c1::scientific}} revolution occurred during the Renaissance.
Published	04/15/2023	In the 1600s, this scientist placed the Sun as the center of the universe*.
Published	04/15/2023	{{c1::Galileo}} established that the Earth is only one of the many planets orbiting the Sun.
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