Definition of metasomatism in English:

metasomatism

noun ˌmɛtəˈsəʊmətɪz(ə)mˌmedəˈsōməˌtizəm

mass nounGeology

Change in the composition of a rock as a result of the introduction or removal of chemical constituents.
〔地质〕交代作用，交代变质（作用）
Example sentencesExamples
- Textural relationships and geological context need to be determined to distinguish these burial-related phases from monazites ascribed to granite metasomatism or low-grade metamorphism.
- Many experiments suggest that ancient subduction-related metasomatism affected OIB mantle sources long before island magmatism.
- Much more commonly, however, metasomatism involves chemical exchange with fluids; in the earth's crust these fluids are usually aqueous solutions.
- In many cases, quartz overgrowths were preferentially corroded and dissolved in the presence of pyrophyllite, most likely during acidic metasomatism.
- In the cooler middle and upper crust, felsic magmatism and aqueous metasomatism are most important.

Derivatives

metasomatic

adjective ˌmɛtəsəʊˈmɑtɪk

Geology

Dolerite dykes that cut the peridotite show chilled margins and local metasomatic calcic alteration.
Example sentencesExamples
- Specifically, gangue formed by both metasomatic alteration and precipitation during ore formation can yield a wealth of information about the origins and physical conditions of the ore-forming fluids.
- A metasomatic deposit was formed at the contact of volcanic intrusive rocks and the limestones.
- Aplite and pegmatite sills and dykes are also common demonstrating that a metasomatic volatile-rich phase played an important role in leucogranite migration.
- Jadeite dykes are intruded within serpentinites and are the metasomatic products of crystallization from hydrous fluids reacting with the serpentinites.

metasomatize

verb ˌmɛtəˈsəʊmətʌɪzˌmɛdəˈsoʊməˌtaɪz

[with object]

Geology

Change the composition of (a rock) by the introduction or removal of chemical constituents.
〔地质〕交代作用，交代变质（作用）
hot fluids from the magma chamber metasomatized the volcanic lavas
Example sentencesExamples
- When metamorphism is accompanied by a change in the chemistry of a rock, the rock is said to have been metasomatized.
- Most recent studies of potassic magma generation ascribe such characteristics to metasomatized portions of the subcontinental lithosphere.
- These fluids altered and metasomatized the previously emplaced volcanic products (lavas, pyroclasts).

Origin

Late 19th century: from meta- (expressing change) + Greek sōma, somat- 'body' + -ism.

Definition of metasomatism in US English:

metasomatism

nounˌmedəˈsōməˌtizəm

Geology

Change in the composition of a rock as a result of the introduction or removal of chemical constituents.
〔地质〕交代作用，交代变质（作用）
Example sentencesExamples
- In the cooler middle and upper crust, felsic magmatism and aqueous metasomatism are most important.
- Much more commonly, however, metasomatism involves chemical exchange with fluids; in the earth's crust these fluids are usually aqueous solutions.
- In many cases, quartz overgrowths were preferentially corroded and dissolved in the presence of pyrophyllite, most likely during acidic metasomatism.
- Textural relationships and geological context need to be determined to distinguish these burial-related phases from monazites ascribed to granite metasomatism or low-grade metamorphism.
- Many experiments suggest that ancient subduction-related metasomatism affected OIB mantle sources long before island magmatism.

Origin

Late 19th century: from meta- (expressing change) + Greek sōma, somat- ‘body’ + -ism.

单词	metasomatism
释义	Definition of metasomatism in English: metasomatism noun ˌmɛtəˈsəʊmətɪz(ə)mˌmedəˈsōməˌtizəm mass nounGeology Change in the composition of a rock as a result of the introduction or removal of chemical constituents. 〔地质〕交代作用，交代变质（作用） Example sentencesExamples Textural relationships and geological context need to be determined to distinguish these burial-related phases from monazites ascribed to granite metasomatism or low-grade metamorphism. Many experiments suggest that ancient subduction-related metasomatism affected OIB mantle sources long before island magmatism. Much more commonly, however, metasomatism involves chemical exchange with fluids; in the earth's crust these fluids are usually aqueous solutions. In many cases, quartz overgrowths were preferentially corroded and dissolved in the presence of pyrophyllite, most likely during acidic metasomatism. In the cooler middle and upper crust, felsic magmatism and aqueous metasomatism are most important. Derivatives metasomatic adjective ˌmɛtəsəʊˈmɑtɪk Geology Dolerite dykes that cut the peridotite show chilled margins and local metasomatic calcic alteration. Example sentencesExamples Specifically, gangue formed by both metasomatic alteration and precipitation during ore formation can yield a wealth of information about the origins and physical conditions of the ore-forming fluids. A metasomatic deposit was formed at the contact of volcanic intrusive rocks and the limestones. Aplite and pegmatite sills and dykes are also common demonstrating that a metasomatic volatile-rich phase played an important role in leucogranite migration. Jadeite dykes are intruded within serpentinites and are the metasomatic products of crystallization from hydrous fluids reacting with the serpentinites. metasomatize verb ˌmɛtəˈsəʊmətʌɪzˌmɛdəˈsoʊməˌtaɪz [with object]Geology Change the composition of (a rock) by the introduction or removal of chemical constituents. 〔地质〕交代作用，交代变质（作用） hot fluids from the magma chamber metasomatized the volcanic lavas Example sentencesExamples When metamorphism is accompanied by a change in the chemistry of a rock, the rock is said to have been metasomatized. Most recent studies of potassic magma generation ascribe such characteristics to metasomatized portions of the subcontinental lithosphere. These fluids altered and metasomatized the previously emplaced volcanic products (lavas, pyroclasts). Origin Late 19th century: from meta- (expressing change) + Greek sōma, somat- 'body' + -ism. Definition of metasomatism in US English: metasomatism nounˌmedəˈsōməˌtizəm Geology Change in the composition of a rock as a result of the introduction or removal of chemical constituents. 〔地质〕交代作用，交代变质（作用） Example sentencesExamples In the cooler middle and upper crust, felsic magmatism and aqueous metasomatism are most important. Much more commonly, however, metasomatism involves chemical exchange with fluids; in the earth's crust these fluids are usually aqueous solutions. In many cases, quartz overgrowths were preferentially corroded and dissolved in the presence of pyrophyllite, most likely during acidic metasomatism. Textural relationships and geological context need to be determined to distinguish these burial-related phases from monazites ascribed to granite metasomatism or low-grade metamorphism. Many experiments suggest that ancient subduction-related metasomatism affected OIB mantle sources long before island magmatism. Origin Late 19th century: from meta- (expressing change) + Greek sōma, somat- ‘body’ + -ism.
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