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groundwater - 3 Caves/caverns Art 17.03b1 Groundwater and...

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Today s Learning Goals Describe porosity and permeability Explain what sediment characteristics impact porosity and permeability. Explain where groundwater is located. Define and be able to locate: water table, saturated zone, unsaturated zone, aquifer, artesian aquifer. Explain and be able to locate/draw: confined aquifer, unconfined aquifer, confining layers. Explain factors controlling the rate of groundwater flow. Given information on sediment/rock characteristics, be able to determine a reasonable placement for a water well and a septic tank.
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Art 17.01a1 What is groundwater? -free water (liquid, not bonded to minerals) beneath Earth’s surface.
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Art 17.01a2
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Art 17.01b1
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Art 17.03a1 3 ways groundwater can exist 1. *Pore space in sediment and sedimentary rocks* 2. Fractures in all types of rocks
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Unformatted text preview: 3. Caves/caverns Art 17.03b1 Groundwater and surface water are connected, and water flows between. Water table – dashed line Art 17.03c1-2 Two main properties control how groundwater moves: 1. POROSITY: proportion of rock that is open space What kind of sediment has greater porosity? Well-rounded, well-sorted sediment has HIGH porosity Art 17.03c3 What about clay particles? High porosity or low? Clay-rich sediments and sedimentary rocks have high porosity, but TINY pores What about granite High porosity or low? Crystalline rocks usually have VERY low porosity, but could be fractured. Art 17.03c5 2. PERMEABILITY How easily water flows through a rock. How large and connected are the pores? Art 17.03c8 Art 17.03c9 Art 17.03c10 Art 17.07a1 Art 17.07b4 Art 17.10a3...
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