Petrography and low grade metamorphism of an Ordovician pelite from the Fishguard district, Wales, 1:50k sheet 210
Kemp, S.J.; Merriman, R.J.. 2006 Petrography and low grade metamorphism of an Ordovician pelite from the Fishguard district, Wales, 1:50k sheet 210. Nottingham, UK, British Geological Survey, 16pp. (IR/06/038) (Unpublished)Before downloading, please read NORA policies.
This report describes the results of a petrographic and X-ray diffraction study of a single pelite sample collected as part of the geological survey of the Fishguard, Wales 1:50k sheet 210. A Kubler Index of 0.41 from XRD analysis indicates that the pelite has just reached the low anchizone grade of low grade metamorphism. Backscattered scanning electron microscopy of a polished thin section of the pelite reveals evidence of sedimentary lamination, a penetrative cleavage and later Fe-oxide veining. Such findings are in keeping with previous illite crystallinity surveys of the Welsh Basin.
|Item Type:||Report (UNSPECIFIED)|
|Programmes:||BGS Programmes > Geology and Landscape Southern|
|Additional Information:||This item has been internally reviewed but not externally peer-reviewed|
|NORA Subject Terms:||Earth Sciences|
|Date made live:||14 May 2009 13:42|
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