K-Ar ages of clay concentrates from Irish orebodies and their bearing on the timing of mineralisation

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Authors:Halliday, A. N.; Mitchell, J. G.
Author Affiliations:Primary:
Scott. Univ. Res. Reactor Cent., East Kilbride, Glasgow G75 OQU, United Kingdom
Volume Title:Transactions of the Royal Society of Edinburgh: Earth Sciences
Source:Transactions of the Royal Society of Edinburgh: Earth Sciences, 74(1), p.1-14. Publisher: Royal Society of Edinburgh, Edinburgh, United Kingdom. ISSN: 0263-5933
Publication Date:1983
Note:In English. 2 p. refs.; illus. incl. sketch maps, tables
Summary:K/Ar ages of 117 clay concentrates from samples associated with Irish mineral deposits indicate that most of the major ore deposits are Carboniferous or earlier. The Avoca ores are >400 m.y.; many vein deposits traversing Palaeozoic rocks were either formed or rejuvenated in the Hercynian, at approx 300 m.y. SW Ireland Cu-Ba ores are 290 m.y.-old; base metal deposits stratabound in the Lower Carboniferous were formed in Carboniferous times, Navan being early Carboniferous. [I.P.]
Subjects:Absolute age; Barite deposits; Carboniferous; Clastic sediments; Clay; Copper ores; Dates; Economic geology; Geochronology; Hydrothermal conditions; K/Ar; Lead ores; Mesozoic; Metal ores; Paleozoic; Permian; Sediments; Stratiform deposits; Triassic; Variscan Orogeny; Veins; Zinc ores; Europe; Ireland; Western Europe; Avoca Deposit; Navan Deposit
Abstract Numbers:85M/3685
Record ID:1986031259
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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