14 Groundwater Fundamentals 4

14 Groundwater Fundamentals 4 - Water-Bearing Unit...

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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 Islands. Consolidated Aquifers Granite
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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
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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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14 Groundwater Fundamentals 4 - Water-Bearing Unit...

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