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Geochemical

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• Geochemistry

  [jee-oh-kem-uh-stree] /ˌdʒi oʊˈkɛm ə stri/ noun 1. the science dealing with the chemical changes in and the composition of the earth’s crust. /ˌdʒiːəʊˈkɛmɪstrɪ/ noun 1. the geology and chemistry concerned with the chemical composition of, and chemical reactions taking place within, the earth’s crust geochemistry (jē’ō-kěm’ĭ-strē) The scientific study of the chemical composition of the […]

• Geochronology

  [jee-oh-kruh-nol-uh-jee] /ˌdʒi oʊ krəˈnɒl ə dʒi/ noun 1. the of the earth, as based on both absolute and relative methods of age determination. /ˌdʒiːəʊkrəˈnɒlədʒɪ/ noun 1. the branch of geology concerned with ordering and dating of events in the earth’s history, including the origin of the earth itself n. 1893, from geo- + chronology.

• Geochronometry

  [jee-oh-kruh-nom-i-tree] /ˌdʒi oʊ krəˈnɒm ɪ tri/ noun 1. the determination of the absolute age of earth materials, as by radiometric dating. geochronometry (jē’ō-krə-nŏm’ĭ-trē) The measurement of geologic time using absolute measures, such as radiometric dating, or relative measures, such as determining the sequence of deposition of rock strata.

• Geocode

  [jee-uh-kohd] /ˈdʒi əˌkoʊd/ noun 1. the characterization of a neighborhood, locality, etc., according to such demographic features as ethnic composition or the average income or educational level of its inhabitants, especially as used in marketing.

• Geocorona

  [jee-oh-kuh-roh-nuh] /ˌdʒi oʊ kəˈroʊ nə/ noun 1. a belt of ionized hydrogen surrounding the earth at the outer limit of the exosphere. geocorona (jē’ō-kə-rō’nə) The halo of far-ultraviolet solar light that reflects off the Earth’s exosphere.

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