The sedimentary succession in the Fachwen Formation, Arfon Group, North Wales.

Leslie, Alick; Burt, Elaine; Schofield, David; Wilby, Philip; Gillespie, Martin. 2011 The sedimentary succession in the Fachwen Formation, Arfon Group, North Wales. British Geological Survey, 27pp. (IR/11/019) (Unpublished)

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The Arfon Group of North Wales (Reedman et al., 1984) has previously been interpreted to represent a Late Neoproterozoic to early Cambrian succession of extrusive igneous and sedimentary rocks formed in the Arfon Basin before and during uplift of the surrounding hinterland. It is overlain by the marine Llanberis Slates Formation (Brenchley et al., 2006). Recent mapping, combined with new dating of the sedimentary rocks, has indicated that the Arfon Group is entirely Neoproterozoic in age. The sedimentary sucession overlying the volcaniclastic rock appears to be derived entirely from the tuff and the clast assemblage suggests that the basin was essentially enclosed during deposition, with little evidence for supply of material from outside the Arfon Basin.

Item Type: Publication - Report
Programmes: BGS Programmes > Geology and Landscape Southern
Funders/Sponsors: BGS Science Budget
Additional Information. Not used in RCUK Gateway to Research.: This item has been internally reviewed but not externally peer-reviewed. This report made open to all by the authors in February 2013
NORA Subject Terms: Earth Sciences
Date made live: 21 Feb 2013 14:54 +0 (UTC)

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