metasomatism

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• Metasomatism — is the chemical alteration of a rock by hydrothermal and other fluids. Metasomatism can occur via the action of hydrothermal fluids from an igneous or metamorphic source. Metasomatic albite + hornblende + tourmaline alteration of metamorphosed… …   Wikipedia

• Metasomatism — Met a*so ma*tism, n. [Pref. meta + Gr. ?, ?, body.] (Geol.) An alteration in a mineral or rock mass when involving a chemical change of the substance, as of chrysolite to serpentine; opposed to ordinary metamorphism, as implying simply a… …   The Collaborative International Dictionary of English

• metasomatism — [met΄əsō′mə tiz΄əm] n. [ META + SOMAT(O) + ISM] the metamorphic process by which minerals of a rock or ore body are replaced by minerals of a different chemical composition as a result of the action of a fluid, esp. of moving water metasomatic… …   English World dictionary

• metasomatism — noun Etymology: metasomatic from German metasomatisch, from Greek meta + sōmat , sōma body Date: 1886 metamorphism that involves changes in the chemical composition as well as in the texture of rock • metasomatic adjective …   New Collegiate Dictionary

• metasomatism — metasomatic /met euh soh mat ik/, adj. /met euh soh meuh tiz euhm/, n. Geol. 1. the series of metamorphic processes whereby chemical changes occur in minerals or rocks as a result of the introduction of material, often in hot aqueous solutions,… …   Universalium

• metasomatism — noun the process by which the bulk chemical composition of a rock is changed by the introduction of components from an external source, especially by a hydrothermal fluid …   Wiktionary

• metasomatism — GLOSSARY OF VOLCANIC TERMS A type of metamorphism characterized by the exchange of chemical species between rocks and their associated altering fluids and/or vapors …   Glossary of volcanic terms

• metasomatism — [ˌmɛtə səʊmətɪz(ə)m] noun Geology change in the chemical composition of a rock. Derivatives metasomatic adjective metasomatize or metasomatise verb Origin C19: from meta + Gk sōma, somat body + ism …   English new terms dictionary

• metasomatism — meta·so·ma·tism …   English syllables

• metasomatism — met•a•so•ma•tism [[t]ˌmɛt əˈsoʊ məˌtɪz əm[/t]] also met•a•so•ma•to•sis [[t] ˌsoʊ məˈtoʊ sɪs[/t]] n. gel the series of metamorphic processes whereby chemical changes occur in minerals or rocks as a result of the introduction of material, often in… …   From formal English to slang

• metasomatism — /mɛtəˈsoʊmətɪzəm/ (say metuh sohmuhtizuhm) noun Geology 1. the processes whereby minerals or rocks are replaced by others of different chemical composition as a result of the introduction of material, usually in very hot aqueous solutions, from… …