Evidence for hydrous high-MgO melts in the Precambrian

Prevailing petrogenetic models for Precambrian high-MgO melts such as komatiites invoke crystallization from nearly anhydrous melts (

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Bibliographic Details
Published in:Geology (Boulder) 1997-02, Vol.25 (2), p.143-146
Main Authors: Stone, William E, Deloule, Etienne, Larson, Michelle S, Lesher, C. Michael
Format: Article
Language:English
Subjects:
Abitibi Belt
amphibole group
Archean
Canada
Canadian Shield
chain silicates
crystallization
Eastern Canada
fractional crystallization
Geology
greenstone belts
igneous and metamorphic rocks
igneous rocks
komatiite
magmas
magnesium oxides
melts
metamorphic belts
North America
Ontario
oxides
P-T conditions
partial melting
petrography
Petrology
phase equilibria
Precambrian
Quebec
silicates
spinifex texture
Stone
Superior Province
textures
ultramafic composition
volcanic rocks
water
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Description
Summary:Prevailing petrogenetic models for Precambrian high-MgO melts such as komatiites invoke crystallization from nearly anhydrous melts (
ISSN:0091-7613
1943-2682
DOI:10.1130/0091-7613(1997)025<0143:EFHHMM>2.3.CO;2