On an Inlier of Longmyndian and Cambrian Rocks at Pedwardine (Herefordshire)

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Abstract
I. Introduction. The inlier under consideration occupies a small strip of country, about a mile in length, around the hamlet of Pedwardine, near Bramptou Bryan, a village situated on the Ludlow-Knighton road, 11 miles west of Ludlow and 6 miles east of Knighton. Through the district in question passes the great north-east and south-west line of disturbance which, extending through Lilleshall, Church Stretton, and Old Radnor, brings up the older formations at so many points along its course. The presence at Pedwardine of Cambrian shales with Dictyonema was first mentioned by Lightbody, who observed that at one point these shales are covered unconformably by ‘Llandovery.’ Their occurrence at this locality is also noticed by Murchison, Callaway, and La Touche, the last-named observer referring in addition to the ‘Cambrian grits and pre-Cambrian rocks’ seen in Brampton Bryan Park ( op. cit. p. 25). Despite these early records, no attempt appears to have been made to fix the boundaries of the Cambrian beds, or to ascertain their relations to the surrounding formations. Further, the name ‘Cambrian’ does not appear on the old 1-inch map of the Geological Survey. In that map the whole strip is coloured as ‘Llandovery’ succeeded conformably by Wenlock Shales on the east, and faulted against Ludlow beds on the west; but the word ‘Fossils,’ which is written across the strip, would appear to refer to the Dictyonema , which is abundant in the Cambrian shales. The district is dominated on the western side by the eastward-facing Ludlow escarpment, which ranges north

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