Metasomatism (from the Greek μετά metá "change" and σῶμα sôma "body") is the chemical alteration of a rock by hydrothermal and other fluids. [1] It is traditionally defined as metamorphism which involves a change in the chemical composition, excluding volatile components. [2]

Metasomatism refers to the process whereby a preexisting igneous, sedimentary, or metamorphic rock undergoes compositional and mineralogical transformations associated with chemical reactions triggered by the reaction of fluids (so-called …

2024年8月22日 · This type of hydrothermal alteration is called metasomatism. A special type of metasomatism takes place where a hot pluton intrudes into carbonate rock such as limestone. Magmatic fluids rich in silica, calcium, magnesium, iron, and other elements can dramatically change the chemistry of the limestone, forming minerals that would not normally ...

Metasomatism: is a metamorphic process by which the chemical composition of a rock or rock portion is altered in a pervasive manner and which involves the introduction and/or removal of chemical components as a result of the interaction of the rock with aqueous fluids (solutions). During metasomatism the rock remains in a solid state.

Hydrothermal metamorphism, also called metasomatism, refers to the chemical and mineralogical changes that occur in rocks as a result of the interaction with hot, chemically-active fluids (mainly water) during metamorphism.

Metasomatism is the process of altering the composition of a rock, either by the addition or subtraction of chemical elements. The term is usually reserved for subsurface processes and, as commonly used, excludes weathering and diagenetic processes.

2015年1月1日 · Metasomatism is a group of processes by which a rock can change chemical composition while it recrystallises, remaining a coherent solid throughout. It is closely related to metamorphism, which, however, is isochemical, apart from the loss of volatiles.

2024年8月30日 · Metasomatism is a geological process involving the chemical alteration of a rock through the introduction or removal of elements by fluid activity, which can result in significant changes in the rock's mineral composition.

2012年1月1日 · Metasomatism is one of the key processes in the genesis and development of a wide range of mineral systems. Metasomatism is generally associated with the activity of volatiles exsolved from magmas, which act both within the causative intrusions and …

1993年8月5日 · In many exposures, multiple generations of cross-cutting syn- and post-kinematic veins record fluid transport and metasomatism during various stages of prograde metamorphism and uplift.