The Geology of the May Hill Inlier

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Abstract
Summary: The May Hill inlier displays a calcareous and shelly development of Silurian rocks. The Upper Llandovery and Wenlock strata are similar, in general, to the corresponding beds of the Malvern and Woolhope area. The Ludlow beds, however, are remarkably thin (maximum thickness 250 feet); they are here divided into six divisions based mainly on faunal changes, and a correlation with the succession at divisions based attempted. Only the basal and the uppermost separated by an unconformity. The Aymestry Limestone is cut out by an unconformity at the base of the Dayia Beds, marked by a thin development of limestone-conglomerates. A phosphatized fragment-bed in the Upper Ludlow strata marks yet another important break in deposition. A distinctive faunal horizon at the base of the Upper Ludlow division, characterized by an abundance of the brachiopod Shaleria [ Brachyprion ] ornatella , has been traced throughout the Welsh Borderland and has been found most valuable for correlation. Structurally, the May Hill inlier is a complex pericline situated at the junction of the Malvern and Woolhope axes; the main folding movements probably occurred in post-Westphalian—pre-Triassic times, with subsidiary and intra-Morganian movements.

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