groundwater origin

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• Groundwater flow equation — Used in hydrogeology, the groundwater flow equation is the mathematical relationship which is used to describe the flow of groundwater through an aquifer. The transient flow of groundwater is described by a form of the diffusion equation, similar …   Wikipedia

• Groundwater — This interesting name with variant spellings, Groundwator and Grundwater, is of locational origin from a place so called in Orphir, Orkney Islands, Scotland. The placename derives from the Old English pre 7th Century grand ground, plus waeter… …   Surnames reference

• Abiogenic petroleum origin — is a largely abandoned hypothesis that was proposed as an alternative to theory of biological petroleum origin. It was relatively popular in the past, but it went largely forgotten at the end of the 20th century after it failed to predict the… …   Wikipedia

• Processes affecting the major chemical components of groundwater — ▪ Table Processes affecting the major chemical components of groundwater component origin* sodium ion sodium chloride dissolution (some pollutive) plagioclase weathering rainwater addition potassium ion biotite weathering K feldspar weathering… …   Universalium

• duricrust — [ djʊərɪkrʌst] noun Geology a hard mineral crust formed at or near the surface of soil in semi arid regions by the evaporation of groundwater. Origin 1920s: from L. durus hard + crust …   English new terms dictionary

• phreatic — [frɪ atɪk] adjective Geology relating to or denoting underground water in the zone below the water table. Compare with vadose. ↘(of a volcanic eruption) caused by the heating and expansion of groundwater. Origin C19: from Gk phrear, phreat a well …   English new terms dictionary

• Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry       The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …   Universalium

• Water in California — Map of water storage and delivery facilities as well as major rivers and cities in the state of California California’s interconnected water system serves over 30 million people and irrigates over 5,680,000 acres (2,300,000 ha) of farmland. As… …   Wikipedia

• river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… …   Universalium

• environmental works — ▪ civil engineering Introduction       infrastructure that provides cities and towns with water supply, waste disposal, and pollution control services. They include extensive networks of reservoirs, pipelines, treatment systems, pumping stations …   Universalium

• mineral deposit — Introduction       aggregate of a mineral in an unusually high concentration.       About half of the known chemical elements (chemical element) possess some metallic (metal) properties. The term metal, however, is reserved for those chemical… …   Universalium