The ores and host rock geology of the Avoca Mines, Co., Wicklow, Ireland

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Authors:Sheppard, W. A.
Volume Title:Stratabound sulphides in the Caledonian-Appalachian Orogen
Volume Authors:Vokes, Frank M., editor; Reinsbakken, Arne
Source:Bulletin - Norges Geologiske Undersokelse, 57, p.269-283; Stratabound sulphides in the Caledonian-Appalachian Orogen, Trondheim, Norway, Sept. 10-12, 1979, edited by Frank M. Vokes and Arne Reinsbakken. Publisher: Universitetsforlaget, Trondheim - Oslo, Norway. ISSN: 0332-5768
Publication Date:1980
Note:In English. 19 refs.; sects., geol. sketch maps
Summary:The Caradocian volcanic sequence which hosts the mineralization at Avoca Mines formed in a continental-margin volcanic arc setting. A centre of volcanic activity lay to the E of the mine area. Close to this centre a sequence of lithic tuffs and potassic rhyolites over 1.5 km thick was built up. Ore formation took place at the top of a seqence of siliceous tuffs on the flank of this volcanic centre. Mineralization coincided with the waning of volcanic activity and the development of a local volcanic centre in E Avoca. The quiescent period of volcanism was marked by subaqueous mass-transport movements and the formation of carbonaceous shales. The mineralization and host-rock geology indicate that the Avoca mine body is a volcanogenic exhalative sulphide deposit. [G.R.]
Subjects:Caradocian; Copper ores; Economic geology; Exhalative processes; Igneous rocks; Lead-zinc deposits; Lithostratigraphy; Metal ores; Mineral deposits, genesis; Ordovician; Paleozoic; Processes; Rhyolites; Stratigraphy; Sulfides; Upper Ordovician; Volcanic rocks; Volcanism; Europe; Ireland; Western Europe; Avoca Mines; Duncannon Group
Coordinates:N520000 N530000 W0060000 W0070000
Abstract Numbers:82M/2510
Record ID:1981049379
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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