Water-Fluxed Melting of the Continental Crust: a Review

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F15%3A00000010" target="_blank" >RIV/00025798:_____/15:00000010 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985530:_____/15:00438916

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0024493714003284#" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0024493714003284#</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.lithos.2014.08.021" target="_blank" >10.1016/j.lithos.2014.08.021</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Water-Fluxed Melting of the Continental Crust: a Review

Popis výsledku v původním jazyce

Water-fluxed melting, also known as fluid- or water-present melting, is a fundamental process in the differentiation of continents. The presence of a free aqueous phase in anatectic terranes influences all major physical and chemical aspects of the melting process. Active tectono-magmatic processes create conditions that trigger the release of aqueous fluids and deformation-driven, transient high permeability channels, capable of fluxing high-temperature regions of the crust where they trigger voluminous melting. In this case, the presence of an aqueous phase is indicated by a mismatch between the large melt fraction generated and the much smaller fractions predicted in its absence.Crustal regions at conditions equivalent to the water-saturated solidus represent a natural trap for up-temperature migration aqueous fluid. Because of the relatively small volumes of aqueous fluids compared to rocks, melting is generally rock buffered and fluids are entirely consumed generating water-saturated melts. Despite consumption of the aqueous fluid phase at the water-saturated solidus, up-temperature migration of water continues through migration of water-rich melts. Thus, melts become the transport agent of water into supra-solidus terranes and responsible for water-fluxed melting. A number of other processes also allow regional aqueous fluids to by-pass the water-saturated solidus fluid trap and trigger melting above solidus conditions. When water or hydrous melts flux rocks at supra-solidus conditions, they equilibrate with the surroundings through further melting and generally decreasing water activity giving rise to undersaturated melts. Unlike dehydration melting, the melt fraction generated in this case is not limited by the water contained in hydrous minerals but by the volume of water added to the system. Unlike melting at the water-saturated solidus, these melts are capable of rising without freezing and do give rise to upper crustal granitic bodies.

Název v anglickém jazyce

Water-Fluxed Melting of the Continental Crust: a Review

Popis výsledku anglicky

Water-fluxed melting, also known as fluid- or water-present melting, is a fundamental process in the differentiation of continents. The presence of a free aqueous phase in anatectic terranes influences all major physical and chemical aspects of the melting process. Active tectono-magmatic processes create conditions that trigger the release of aqueous fluids and deformation-driven, transient high permeability channels, capable of fluxing high-temperature regions of the crust where they trigger voluminous melting. In this case, the presence of an aqueous phase is indicated by a mismatch between the large melt fraction generated and the much smaller fractions predicted in its absence.Crustal regions at conditions equivalent to the water-saturated solidus represent a natural trap for up-temperature migration aqueous fluid. Because of the relatively small volumes of aqueous fluids compared to rocks, melting is generally rock buffered and fluids are entirely consumed generating water-saturated melts. Despite consumption of the aqueous fluid phase at the water-saturated solidus, up-temperature migration of water continues through migration of water-rich melts. Thus, melts become the transport agent of water into supra-solidus terranes and responsible for water-fluxed melting. A number of other processes also allow regional aqueous fluids to by-pass the water-saturated solidus fluid trap and trigger melting above solidus conditions. When water or hydrous melts flux rocks at supra-solidus conditions, they equilibrate with the surroundings through further melting and generally decreasing water activity giving rise to undersaturated melts. Unlike dehydration melting, the melt fraction generated in this case is not limited by the water contained in hydrous minerals but by the volume of water added to the system. Unlike melting at the water-saturated solidus, these melts are capable of rising without freezing and do give rise to upper crustal granitic bodies.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DB - Geologie a mineralogie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Lithos

ISSN

0024-4937

e-ISSN

—

Svazek periodika

212-215

Číslo periodika v rámci svazku

January

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

31

Strana od-do

158-188

Kód UT WoS článku

000348879200012

EID výsledku v databázi Scopus

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