The Loch Scridain xenolithic sill complex, Isle of Mull, Scotland; fractional crystallization, assimilation, magma-mixing and crustal anatexis in subvolcanic conduits

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doi: 10.1093/petrology/39.3.519
Authors:Preston, R. Jeremy; Bell, Brian R.; Rogers, Graeme
Author Affiliations:Primary:
University of Glasgow, Department of Geology and Applied Geology, Glasgow, United Kingdom
Scottish Universities Research and Reactor Centre, United Kingdom
Volume Title:Journal of Petrology
Source:Journal of Petrology, 39(3), p.519-550. Publisher: Clarendon Press, Oxford, United Kingdom. ISSN: 0022-3530
Publication Date:1998
Note:In English. 105 refs.; illus., incl. 4 tables, geol. sketch maps
Summary:A suite of high-level minor intrusions into the Mull Palaeogene lava field consists of three distinct groups. 1) aphyric tholeiitic basalts and basaltic andesites with crustal and cognate gabbroic xenoliths with trends controlled by low-P fractionation of olivine + clinopyroxene + plagioclase followed by plagioclase + clinopyroxene + low Ca pyroxene and some crustal assimilation of a high Nd partial melt of Moine metasediments. 2) plagioclase-and pyroxene-phyric andesites and dacites which are simple mixtures between basic magma and 3) rhyolite derived from partial melting of a pelitic source. Major, trace, REE and Sr, Nd and Pb isotope data for all the rock types noted above are given, including Moine pelites. [B.E.L.]
Subjects:Alkaline earth metals; Anatexis; Assimilation; Complexes; Crust; Fractional crystallization; Geochemistry; Inclusions; Intrusions; Isotope ratios; Isotopes; Lithogeochemistry; Magmas; Major elements; Metals; Nd-144/Nd-143; Neodymium; Partial melting; Rare earths; Sills; Sr-87/Sr-86; Stable isotopes; Strontium; Trace elements; Xenoliths; Argyllshire Scotland; Europe; Great Britain; Hebrides; Inner Hebrides; Mull Island; Scotland; United Kingdom; Western Europe; Loch Scridain Complex; Loch Scridain Scotland; Strathclyde region Scotland
Coordinates:N563000 N563000 W0060000 W0060000
Abstract Numbers:98M/3078
Record ID:1998032561
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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