The Delaney Dome Formation, Connemara, W. Ireland, and the geochemical disttinction between ortho- and para-quartzofeldspathic rocks

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Authors:Leake, B. E.; Singh, D.
Author Affiliations:Primary:
Univ. Glasgow, Dep. Geol., Glasgow, United Kingdom
Univ. West. Aust., Australia
Volume Title:Mineralogical Magazine
Source:Mineralogical Magazine, 50 Part 2(356), p.205-215. Publisher: Mineralogical Society, London, United Kingdom. ISSN: 0026-461X
Publication Date:1986
Note:In English. 17 refs.; illus. incl. 2 tables, geol. sketch map
Summary:A number of geochemical plots are suggested by means of which metamorphosed quartzofeldspathic sedimentary rocks (meta-sandstones, meta-arkoses, quartzites, etc.) can be distinguished from their metamorphosed igneous mineralogical analogues (metarhyolite, meta-granite, etc.). These plots are applied to an enigmatic, partly mylonitized, quartzofeldspathic series, the Delaney Dome Formation, which is involved in a major thrust zone. The formation is shown to be igneous and is probably a meta-rhyolite. The plots proposed should have general application in identifying the precursors of both high-grade and low-grade quartzofeldspathic rocks of unknown origin. [R.A.H.]
Subjects:Cambrian; Chemical composition; Dalradian; Geochemistry; Metaigneous rocks; Metamorphic rocks; Metarhyolite; Metasedimentary rocks; Paleozoic; Precambrian; Trace elements; Connemara; Europe; Galway Ireland; Ireland; Western Europe; Connemara Schists; Delaney Dome Formation; Western Ireland
Coordinates:N532000 N534000 W0095000 W0101000
Abstract Numbers:86M/3349
Record ID:1986086927
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Abstract, Copyright, Mineralogical Society of Great Britain and Ireland
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