The Carboniferous Succession in Gower (Glamorganshire), with Notes on its Fauna & Conditions of Deposition

Abstract

I. I ntroduction [E.E.L.D. & A.V.]. T he object with which the Avonian rocks of Gower described in the present paper were examined was primarily the comparison of their faunal sequence with that of Bristol and other parts of the South-Western Province. In this connexion valuable pioneer work on parts of the sequence had already been done by Dr. W. B. Gubbin and it was desired that our knowledge should be extended to the whole development, as also to the relationship of the zones that are based on brachiopods and corals with the representative of the Pendleside Series which had been recognized in Gower by Dr. Wheelton Hind. For in Gower alone of the whole province was such a representative known. Between 1899 and 1902 the area had been mapped by the officers of H.M. Geological Survey, Dr. A. Strahan, Mr. R. H. Tiddeman, and Mr. B. S. N. Wilkinson, and our work was greatly facilitated by the knowledge then obtained, which was generously placed at our disposal and has since (in 1907) been published in the official maps and memoirs. Our joint field-work, the examination of the Mumbles-Bishopston ground and the southern coast, was carried out in 1905, and in the following year one of us (E. E. L. D.) extended the work into the north-western part of the area in connexion with the Geological Survey; a summary of the information then obtained has since been published. II. L ithological C haracters of the Z ones [E. E. L. D.]. The Avonian rocks of