Intro Historical Geology 2

Intro Historical Geology 2 - Introduction Time scale Time...

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1 Introduction Time scale Time scale This is the version that you will be quizzed on. Taxonomic classifcation kingdoms
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2 Factors for fossilization • Rapid burial is the best way for successful fossilization. • Most often occur in shallow water with high energy environments. • Rarely occurs on land. Types of fossilization Unaltered Remains Permineralization Recrystallization Dissolution/Mold Impression Carbonization Unaltered remains • Very rare. • Found in glaciated regions and regions like the LaBrea tarpits. Baby Lyuba Permineralization • Original pore spaces are permeated with groundwater. • Minerals precipitate out and ±ll in the pore spaces, cementing the organic matter into rock. • Cell structure can be preserved! Recrystallization • One mineral changes into another. • Calcite to aragonite. – Both CaCO 3
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3 • Water seeping through sediments. • Original material
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Intro Historical Geology 2 - Introduction Time scale Time...

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