The geology of the Navan Zn-Pb orebody.

Abstract

A detailed account is given of the stratigraphy and structure of the local geology, followed by summary descriptions of the ore mineralogy and textures, metal distribution patterns and limited available isotopic data. The orebody is located close to the intersection of major faults with a late Caledonian syenite intrusion; this situation is considered to have caused the high permeabilities necessary for localized large-scale hydrothermal fluid flow through the underlying Lower Palaeozoic basement. -R.E.