Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 275-280 |
| Seitenumfang | 6 |
| Fachzeitschrift | ELEMENTS |
| Jahrgang | 2 |
| Ausgabenummer | 5 |
| Publikationsstatus | Veröffentlicht - 1 Okt. 2006 |
Abstract
Dissolved volatiles can have tremendous effects on the physical and chemical properties of silicate melts. The most abundant volatile in terrestrial magmas is H2O. A few weight percent of added H2O can reduce melting temperatures of rocks by several hundred degrees and enhance the fluidity of magmas by orders of magnitude. Carbon dioxide and sulfur, although less abundant in natural magmas than H2O, often control the initial stage of magma degassing. The strong effect of volatiles on melt properties is related to the chemical bonding of the volatiles in the melt, which depends in particular on melt composition, temperature and oxygen fugacity. The oxygen fugacity, although very low at magmatic conditions, nevertheless has a large influence on the magma, determining the abundance and composition of minerals, fluid-melt partitioning and the physical properties of the melt.
ASJC Scopus Sachgebiete
- Erdkunde und Planetologie (insg.)
- Geochemie und Petrologie
- Erdkunde und Planetologie (insg.)
- Erdkunde und Planetologie (sonstige)
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in: ELEMENTS, Jahrgang 2, Nr. 5, 01.10.2006, S. 275-280.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Geochemical aspects of melts
T2 - Volatiles and redox behavior
AU - Behrens, Herald
AU - Gaillard, Fabrice
PY - 2006/10/1
Y1 - 2006/10/1
N2 - Dissolved volatiles can have tremendous effects on the physical and chemical properties of silicate melts. The most abundant volatile in terrestrial magmas is H2O. A few weight percent of added H2O can reduce melting temperatures of rocks by several hundred degrees and enhance the fluidity of magmas by orders of magnitude. Carbon dioxide and sulfur, although less abundant in natural magmas than H2O, often control the initial stage of magma degassing. The strong effect of volatiles on melt properties is related to the chemical bonding of the volatiles in the melt, which depends in particular on melt composition, temperature and oxygen fugacity. The oxygen fugacity, although very low at magmatic conditions, nevertheless has a large influence on the magma, determining the abundance and composition of minerals, fluid-melt partitioning and the physical properties of the melt.
AB - Dissolved volatiles can have tremendous effects on the physical and chemical properties of silicate melts. The most abundant volatile in terrestrial magmas is H2O. A few weight percent of added H2O can reduce melting temperatures of rocks by several hundred degrees and enhance the fluidity of magmas by orders of magnitude. Carbon dioxide and sulfur, although less abundant in natural magmas than H2O, often control the initial stage of magma degassing. The strong effect of volatiles on melt properties is related to the chemical bonding of the volatiles in the melt, which depends in particular on melt composition, temperature and oxygen fugacity. The oxygen fugacity, although very low at magmatic conditions, nevertheless has a large influence on the magma, determining the abundance and composition of minerals, fluid-melt partitioning and the physical properties of the melt.
KW - Carbon dioxide
KW - Oxygen fugacity
KW - Redox state of magma
KW - Silicate melts
KW - Volatile solubility
KW - Water speciation
UR - http://www.scopus.com/inward/record.url?scp=34248651244&partnerID=8YFLogxK
U2 - 10.2113/gselements.2.5.275
DO - 10.2113/gselements.2.5.275
M3 - Article
AN - SCOPUS:34248651244
VL - 2
SP - 275
EP - 280
JO - ELEMENTS
JF - ELEMENTS
SN - 1811-5209
IS - 5
ER -