Rocks, Minerals, Rock Cycle Fossils, Superposition, Soil Geology Test Review.
Ch 21: Fossils and the Rock Record
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Transcript of Ch 21: Fossils and the Rock Record
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Ch 21: Fossils and the Rock
Record
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According to the scientific community How old is the
Earth?
About 4.6 billion years old
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What evidence does the scientific community have that supports this
age?
Rock layersFossils
Radiometric dating
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Where is the oldest rock on Earth located? How old are they?
• Western Green land between 3.7 – 3.8 billion years old • Rocks 3.4-3.6 billion have been found
in southern Africa, western Australia and the Great Lake region of north America
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What type of rock are the oldest know rocks?
Metamorphic
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According to the bible How old is the earth?
6,000 years old
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What evidence does bible believers have that supports this
age? • Irish Archbishop James Ussher
(1581-1656)• Used the Bible to come up with
fairly precise dates for people and events mentioned in the Bible
• His calculations led him to determine that God created the universe on 23 October, 4004 BC
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The answer is in Genesis!
http://www.answersingenesis.org/articles/2007/05/30/how-old-is-earth#fnMark_1_1_1
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What do you think??
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How much is a billion? IN CLASS ACTIVITY• Create a timeline of human milestones from
now to the earliest possible event.
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ANY QUESTIONS?
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Websites
• USGS Divisions of Geologic Timehttp://pubs.usgs.gov/fs/2007/3015/fs2007-3015.pdf• Virtual Museum of Fossils Valdosta State Universityhttp://fossils.valdosta.edu/• Smithsonian Geologic Time http://paleobiology.si.edu/geotime/main/index.html