Age of Dinosaurs - Geologic Time and Geologic Principles...

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Geologic Time and Geologic Principles 19:28 Geologic period from Mesozoic.  oldest 1. Triassic 2. Jurassic 3 . Cretaceous youngest Morrison formation has more fossils than other location fossils found in water basin flood plains because of mass death in floods unconformity is also called a hiatus = missing part of a record Ignore radioactive decay styles
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Weathering and Erosion 19:28 sedimentary rocks form from the weathering process weathering - processes by which rocks and minerals are broken down erosion - process of the removal of these weathering processes running water, wind, and glaciers move weathered products elsewhere mechanical erosion frost action  more important in places with freezing and thawing temperatures,  middle latitudes pressure releases  where rock rises up from deep (high pressure) to ground  level (lower pressure). Rock expands and  joints  (cracks) form chemical weathering in hot, wet environments solution can dissolve limestone and form sinkholes (very common in FL) hydrolysis - slow but effective process that changes minerals in igneous and  metamorphic rocks into fine-grained clay minerals solution, oxidation, and hydrolysis are chemical weathering processes changing  the composition of weathered minerals oxidation - refers to reactions with oxygen that form oxides oxidation of iron in soils and rocks causes an increase in reddish color tropical soils are strongly oxidized
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Tombs of Dinosaurs: Sedimentary Rocks 19:28 sedimentary rocks- begin as the weathered products of existing rocks how sediments turned into sedimentary rocks lithification - process primarily involving compaction and cementation compaction- important process in lithification causing a reduction in the pore  space between unconsolidated grains in the sediment pore spaces are squeezed by the weight of the overlying sediments
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Age of Dinosaurs - Geologic Time and Geologic Principles...

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