Investigation of polymetallic mineralisation in Lower Devonian volcanics near Alva, central Scotland

Hall, I.H.S.; Gallagher, M.J.; Skilton, B.R.H.; Johnson, C.E.. 1982 Investigation of polymetallic mineralisation in Lower Devonian volcanics near Alva, central Scotland. Institute of Geological Sciences, 37pp. (WF/MR/82/053) (Unpublished)

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Abstract/Summary

The subsurface characteristics of three known occurrences of fracture-controlled mineralisation in the Lower Devonian Ochil Volcanic Formation near Alva, central Scotland, were tested by shallow boreholes. Target structures were intersected by each borehole, but they contain only minor amounts of baryte and geochemical enrichments of copper, arsenic and uranium. Differential fracturing within the variegated volcanic sequence and enhanced brecciation at fault intersections are principal controls. Earlier silver-cobalt mineralisation appears to have been followed by copperbarium mineralisation. The andesitic rocks of the volcanic pile represent a suitable source for the metals.

Item Type:	Publication - Report
Programmes:	BGS Programmes > Other
Funders/Sponsors:	Department of Industry
Additional Information. Not used in RCUK Gateway to Research.:	This item has been internally reviewed but not externally peer-reviewed
NORA Subject Terms:	Earth Sciences
Date made live:	01 Nov 2010 13:43 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/11847

Item Type:

Publication - Report

Programmes:

BGS Programmes > Other

Funders/Sponsors:

Department of Industry

Additional Information. Not used in RCUK Gateway to Research.:

This item has been internally reviewed but not externally peer-reviewed

NORA Subject Terms:

Earth Sciences

Date made live:

01 Nov 2010 13:43 +0 (UTC)