Lead isotope variation in the Tynagh, Silvermines and Navan base-metal deposits, Ireland

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Authors:Boast, A. M.; Swainbank, I. G.; Coleman, Max L.; Halls, Christopher
Author Affiliations:Primary:
Inst. Geol. Sci., London, United Kingdom
Other:
Imperial Coll. Sci. and Technol., United Kingdom
Volume Title:Transactions - Institution of Mining and Metallurgy. Section B: Applied Earth Science
Source:Transactions - Institution of Mining and Metallurgy. Section B: Applied Earth Science, Vol.90, p.B115-B119. Publisher: Institution of Mining and Metallurgy, London, United Kingdom. ISSN: 0371-7453
Publication Date:1981
Note:In English. 32 refs.; illus. incl. 1 table, geol. sketch map
Summary:Galena from Tynagh gave a Pb-isotope model age for mineralization of 348 + or - 22 m.y. agreeing with the stratigraphic date, whereas that from Silvermines is anomalously radiogenic. It is considered that Pb at Tynagh has been derived from multi-cycled sediments that approximate evolution in the orogen. The Silvermines data may be explained if the metalliferous fluids had preferentially leached radiogenic Pb from the source rocks. [R.A.H.]
Subjects:Absolute age; Carbonate rocks; Carboniferous; Dates; Dinantian; Economic geology; Galena; Isotopes; Lead; Lead ores; Limestone; Metal ores; Metals; Paleozoic; Pb-206/Pb-204; Pb-207/Pb-204; Pb-208/Pb-204; Radioactive isotopes; Sedimentary rocks; Stable isotopes; Stratiform deposits; Sulfides; Zinc ores; Europe; Galway Ireland; Ireland; Tynagh Ireland; Western Europe; Navan; Silvermines
Coordinates:N520000 N540000 W0060000 W0103000
Abstract Numbers:82M/1417
Record ID:1984020742
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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