sci 245 study notes

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The Geology of FloridaNameClassDateGeological Events Basement separated from African Plate whenPangea rifted and sutured to North American Plate. Sinking formed the basin that was critical toformation of carbonates. Florida Platform formed during Cretaceous. Erosion of Appalachian Highlands introducedsiliciclastic sediments Glacial and interglacial periods of QuaternaryPeriod led to sea level changes, erosion,deposition, and the formation of moderntopography.Geological Feature Florida Platform Basement rockspart of AfricanPlate Carbonatesedimentationfrom mid-Jurassicto mid-Oligocene Pliocene toHolocenesiliciclasticsedimentationGeologic Time Absolute agesdetermined fromradioactivitystudies. Relative agesdetermined fromcorrelation betweenrock units usingfossils.Plate Tectonics Florida once partof African Plate Pangea 230million years ago(top left) Triassic Period195 million yearsago (top right) CretaceousPeriod 65 millionyears ago(bottom)Weathering and Erosion Sea level fluctuations during Cenozoic andQuaternary led to periods ofnondeposition, weathering, and erosion. Uplift and erosion of AppalachianHighlands deposited siliciclastic sedimentsover Florida Platform during mid-Cenozoicto late Paleogene.Sedimentary Rocks Limestone Dolomite Interbeddedwith sand,silt, clayIgneous & Metamorphic Rocks Basement Rocksonly Pre-Cambrian toCa

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