'Older rock' diaporamas de présentation

This is

This is. Jeopardy. Earth Science. Final Jeopardy. Jeopardy. What is granite?. Earth's Interior for 200. Continental crust consists mainly of the rock ______________. Back to Jeopardy. What are geologists?. Earth's Interior for 400.

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Evolution

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In this presentation you will:

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gravity

Principle of Original Horizontality Sedimentary rocks were deposited in primarily horizontal beds. deposited last - youngest. gravity. deposited first - oldest. Principle of Superposition In an undisturbed sedimentary sequence, the oldest rocks are on the bottom of the stack. Youngest.

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Relative Age Dating

Relative Age Dating. Uniformitarianism Principles of correlation Original horizontality Superposition Inclusion Cross-cutting relationships Biostratigraphy. James Hutton, Scottish Geologist. Royal Society of Edinburgh meetings - 1785

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Sea-Floor Spreading

Sea-Floor Spreading. How is Earth magnetic?. The Earth is a layered planet consisting of crust, mantle, and core The outer core is a metallic liquid that moves around, creating a magnetic field The lithosphere moves around on top of this. What is magnetic reversal?.

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Rocking with rocks!

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Sea-Floor Spreading

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Relative Age Dating

Relative Age Dating. Principles of correlation Original horizontality Superposition Inclusion Cross-cutting relationships. Principle of Original Horizontality Sedimentary rocks were deposited in primarily horizontal beds. deposited last - youngest. gravity. deposited first - oldest.

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Rock & Fossil Record

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Sea Floor Spreading

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The Relative Age of Rocks

The Relative Age of Rocks. Why do sedimentary rocks have layers?. The sediments (particles of sand, rocks, etc) is deposited in flat layers one of top of the other. Over time, the sediment hardens and changes into sedimentary rock. What is an unconformity?.

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Continental Drift 2

Continental Drift 2. Schedule. How do the continents move?. 1950s - Scientists begin mapping the sea floor. How would you think the sea floor would look? They thought it would look smooth. Scientists found mid-ocean ridges, or underwater mountains. Mid-Ocean Ridges.

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Classifying Rocks

Classifying Rocks. Geologists observe: Mineral composition Color Texture a. Grain size b. Grain shape c. Grain pattern. Igneous Rocks. Classified according to their origin, texture, and mineral composition. ORIGIN:

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