Details
| Original language | English |
|---|---|
| Pages (from-to) | 109-114 |
| Number of pages | 6 |
| Journal | Elements |
| Volume | 12 |
| Issue number | 2 |
| Publication status | Published - 1 Apr 2016 |
Abstract
Arich history of experimental petrology has revealed the paths by which silicic igneous rocks follow mineral-melt equilibria during differentiation. Subdividing these rocks by 'molar Al versus Ca + Na + K' illustrates first-order differences in mineralogy and gives insight into formation mechanisms. Peraluminous magmas, formed by partial melting of sediments, largely owe their attributes and compositions to melting reactions in the protoliths, whereas most metaluminous felsic magmas record both continental and mantle inputs. Peralkaline rhyolites are mainly derived from either protracted crystallization or small degrees of partial melting of basalt, with only a marginal crustal contribution. Most silicic magmas hold 3-7 wt% H2Omelt, which is inversely correlated with pre-eruptive temperature (700 °C to >950 °C) but unrelated to their reduced/oxidized state.
Keywords
- Granite, Metaluminous, Peralkaline, Peraluminous, Phase equilibria, Redox state, Rhyolite, Viscosity, Water
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Geochemistry and Petrology
- Earth and Planetary Sciences(all)
- Earth and Planetary Sciences (miscellaneous)
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In: Elements, Vol. 12, No. 2, 01.04.2016, p. 109-114.
Research output: Contribution to journal › Article › Research
}
TY - JOUR
T1 - Experimental constraints on the formation of silicic
AU - Scaillet, Bruno
AU - Holtz, Francois
AU - Pichavant, Michel
N1 - Copyright: Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2016/4/1
Y1 - 2016/4/1
N2 - Arich history of experimental petrology has revealed the paths by which silicic igneous rocks follow mineral-melt equilibria during differentiation. Subdividing these rocks by 'molar Al versus Ca + Na + K' illustrates first-order differences in mineralogy and gives insight into formation mechanisms. Peraluminous magmas, formed by partial melting of sediments, largely owe their attributes and compositions to melting reactions in the protoliths, whereas most metaluminous felsic magmas record both continental and mantle inputs. Peralkaline rhyolites are mainly derived from either protracted crystallization or small degrees of partial melting of basalt, with only a marginal crustal contribution. Most silicic magmas hold 3-7 wt% H2Omelt, which is inversely correlated with pre-eruptive temperature (700 °C to >950 °C) but unrelated to their reduced/oxidized state.
AB - Arich history of experimental petrology has revealed the paths by which silicic igneous rocks follow mineral-melt equilibria during differentiation. Subdividing these rocks by 'molar Al versus Ca + Na + K' illustrates first-order differences in mineralogy and gives insight into formation mechanisms. Peraluminous magmas, formed by partial melting of sediments, largely owe their attributes and compositions to melting reactions in the protoliths, whereas most metaluminous felsic magmas record both continental and mantle inputs. Peralkaline rhyolites are mainly derived from either protracted crystallization or small degrees of partial melting of basalt, with only a marginal crustal contribution. Most silicic magmas hold 3-7 wt% H2Omelt, which is inversely correlated with pre-eruptive temperature (700 °C to >950 °C) but unrelated to their reduced/oxidized state.
KW - Granite
KW - Metaluminous
KW - Peralkaline
KW - Peraluminous
KW - Phase equilibria
KW - Redox state
KW - Rhyolite
KW - Viscosity
KW - Water
UR - http://www.scopus.com/inward/record.url?scp=84964806983&partnerID=8YFLogxK
U2 - 10.2113/gselements.12.2.109
DO - 10.2113/gselements.12.2.109
M3 - Article
AN - SCOPUS:84964806983
VL - 12
SP - 109
EP - 114
JO - Elements
JF - Elements
SN - 1811-5209
IS - 2
ER -