Ch09_Outline - Earth: An Introduction to Physical Geology,...

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Earth: An Introduction to Physical Geology, 9e Tarbuck & Lutgens
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"Most layers of sediments are deposited in a horizontal position" is a statement of the principle of ____________. A. Fossil Succession B. Cross Bedding C. Cross-Cutting Relationships D. Original Horizontality E. Sediment
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Pieces of one rock unit contained within another are called ____________. A. Hosts B. Conformities C. Inclusions D. Interbeds E. intrusions
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Age of Earth A. 200 billion B. 200 million C. 400 billion D. 4.6 billion
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A. A is the youngest B. B is the youngest C. C is the youngest D. D is the youngest E. E is the youngest
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The age of the universe A. 4.6 billion B. 500 billion C. 13 billion D. 1 million
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The Oldest rocks found on the earth are how old? A. 450 million B. 500 million C. 1.2 billion D. 3.8 billion
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The first life found on earth is how old? A. 5 billion B. 3.8 billion C. 100 million D. 540 million
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Humans and dinosaurs interacted during the ice age True False
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Geologic Time Earth, 9e - Chapter 9 Stan Hatfield Southwestern Illinois College
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2 types of Dating Relative Absolute
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Uniformitarianism The present is the key to the past The physical, chemical and biological laws that operate today also operated in the geologic past.
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Relative dating Law of superposition Developed by Nicolaus Steno in 1669 In an undeformed sequence of sedimentary rocks (or layered igneous rocks), the oldest rocks are on the bottom
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Superposition is well illustrated by the strata in the Grand Canyon Figure 9.2
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Relative dating Principle of original horizontality Layers of sediment are generally deposited in a horizontal position Rock layers that are flat have not been disturbed Principle of cross-cutting relationships Younger features cut across older feature
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Cross-cutting relationships Figure 9.4
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Relative dating Inclusions An inclusion is a piece of rock that is enclosed within another rock Rock containing the inclusion is younger Unconformity An unconformity is a break in the rock record produced by erosion and/or nondeposition of rock units
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Relative dating Unconformity
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This note was uploaded on 06/02/2011 for the course GEL 150 taught by Professor Kristasyrup during the Spring '11 term at Moraine Valley Community College.

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Ch09_Outline - Earth: An Introduction to Physical Geology,...

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