13 Florida Freshwater and Groundwater I 7

13 Florida Freshwater and Groundwater I 7 - Islands....

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Consolidated Aquifers
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Water held in cracks, fissures, erosion cavities and seams in solid rock formations. Consolidated Aquifers Sandstone, limestone, granite
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Consolidated Rock: igneous or sedimentary Water-Bearing Unit
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Rocks formed from the cooling and solidification of molten magma originating in the earth's core Igneous Rocks Extrusive rock is formed when the solidification process occurs at or near the ground surface. These rocks are generally very permeable because of the "bubbling" of gases escaping during cooling and solidification. horizontal fracturing The Columbia River Plateau covering eastern Washington and Oregon, and Idaho, averages about 500 m in thickness and is one of the largest basalt deposits in the world. Basalt aquifers are critically important water sources for the Hawaiian
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Unformatted text preview: Islands. Consolidated Aquifers Granite Consolidated Rock Aquifers Sandstone and Carbonate Sandstone is a cemented form of sand and gravel Carbonate formations include limestone (CaCO 3 ) and dolomite (MgCO 3 ) Exhibit mostly secondary porosity due to fracturing and dissolution openings Sedimentary sandstone limestone cavity Consolidated Aquifers: Guaraní Aquifer Sedimented sandstones deposited during the Triassic and Jurassic periods overlaid with igneous basalt with low-permeability Thickness: 50 m to 800 m Slowly Recharged 37,000 km³ of water fresh drinking water for 200 years (166 km³/year) Transboundary Aquifer: Argentina, Brazil, Paraguay and Uruguay 5% of world population Florida’s Principal Aquifer is Consolidated Limestone Calcium and Magnesium Carbonate...
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This note was uploaded on 02/10/2011 for the course SWS 2007 taught by Professor bonczek during the Fall '09 term at University of Florida.

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13 Florida Freshwater and Groundwater I 7 - Islands....

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