Trace element variation in the leucogranites within the main Galway Granite, Connemara, Ireland

Saved in:
Authors:Feely, M.; Madden, J. S.
Author Affiliations:Primary:
Univ. Coll., Dep. Geol., Galway, Ireland
Volume Title:Mineralogical Magazine
Source:Mineralogical Magazine, Vol.52(Part 2), p.139-146. Publisher: Mineralogical Society, London, United Kingdom. ISSN: 0026-461X
Publication Date:1988
Note:In English. 31 refs.; illus. incl. 2 tables, geol. sketch map
Summary:Six hundred and forty four gamma-ray spectrometer assays of U and Th obtained within the late Caledonian Galway Granite western Ireland are presented. The data cover the range of granodiorites, adamellites and leucogranites (Murvey Granite) present in the batholith. There is an overall increase in U and Th abundances with petrological evolution. The broad scatter of values that characterizes the Murvey Granite reflects the geographically separate occurrences of this leucogranite. Rubidium and strontium data imply varying degrees of fractionation among these separate Murvey Granite occurrences. Y and HREE are notably enriched in the Murvey granite at Costelloe which also contains the highest Th levels amongst the leucogranites. Thorite, uraninite, monazite and Y-zircon are present in this leucogranite and are responsible for the observed enrichments in U, Th, Y and HREE. [R.A.H.]
Subjects:Adamellite; Batholiths; Gamma-ray spectra; Geochemistry; Granites; Granodiorites; Igneous rocks; Interpretation; Intrusions; Leucogranite; Metals; Plutonic rocks; Rare earths; Spectra; Trace elements; Connemara; Europe; Galway Granite; Galway Ireland; Ireland; Western Europe; Murvey Granite
Abstract Numbers:88M/3924
Record ID:1988044403
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Abstract, Copyright, Mineralogical Society of Great Britain and Ireland
Tags: Add Tag
No Tags, Be the first to tag this record!
Be the first to leave a comment!
You must be logged in first