The Petrography and Provenance of the Coniston Grits East of the Lune Valley, Westmorland
- 1 June 1965
- journal article
- research article
- Published by Cambridge University Press (CUP) in Geological Magazine
- Vol. 102 (3) , 252-260
- https://doi.org/10.1017/s0016756800053280
Abstract
The petrography of the Coniston Grits is described. Volcanic and sedimentary rock fragments suggest that the sediments were derived from the Ballantrae Series of the Southern Uplands, and not the Borrowdale Volcanic Series.There is little palaeocurrent evidence for a border land mass, but it is suggested that coarse sedimentation during the Wenlockian was restricted to the Southern Uplands by a shallowing in the border area, which was finally overcome by Ludlovian times, to allow deposition of coarser material to the south.Keywords
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