Magma mixing in the acidic-basic complex of Ardnamurchan; implications on the evolution of shallow magma chambers

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Authors:Vogel, T. A.
Author Affiliations:Primary:
Mich. State Univ., Geol. Dep., East Lansing, MI 48824, United States
Volume Title:Contributions to Mineralogy and Petrology
Source:Contributions to Mineralogy and Petrology, 79(4), p.411-423. Publisher: Springer International, Heidelberg-New York, International. ISSN: 0010-7999
Publication Date:1982
Note:In English. 50 refs.; illus. incl. 59 anal., 5 tables
Summary:The net-veined complex associated with the Centre 2 intrusive at Ardnamurchan, on the W coast of Scotland, consists of a porphyritic mafic rock, an aphyric intermediate rock and a silicic rock. Liquid-liquid relationships are inferred for these three magmas. The trace-element data are consistent with magma mixing but inconsistent with crystal fractionation or melting. The major-element data are consistent with mixing of high-Si silicic magma and primitive mafic magma, along with approx 35% crystal fractionation to form the intermediate rock type. The net-veined complex may be the only evidence available for interaction of mafic and silicic melts that occurred in the Ardnamurchan high-level magma chamber before the silicic magma was lost to eruptive and surface processes. Major-element analyses with CIPW norms (33) and selected REE analyses are presented. [P.Br.]
Subjects:Acidic magmas; Differentiation; Electron probe data; Fractional crystallization; Geochemistry; Mafic magmas; Magma chambers; Magmas; Major elements; Metals; Mixing; Models; Petrology; Rare earths; Trace elements; Ardnamurchan; Argyllshire Scotland; Europe; Great Britain; Highland region Scotland; Northern Highlands; Scotland; United Kingdom; Western Europe
Coordinates:N564000 N564500 W0054500 W0061500
Abstract Numbers:83M/2026
Record ID:1983045402
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom, Reference includes data from PASCAL, Institute de l'Information Scientifique et Technique
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