Abstract

Dr P. E. Kent commented on the extent and importance of the mapping demonstrated by Dr Dingle. In an area roughly the size of Yorkshire the author had produced a good reconnaissance map using a range of methods with very limited financial resources, under physical conditions which were often difficult and frequently most uncomfortable. The paper represents a notable achievement; Dr Dingle, Professor Donovan and the University of Hull deserve warm congratulations.

He (the speaker) felt that the major features required a comment. In North Yorkshire the Cleveland brachydome is terminated eastwards by the north-south crossfold of Eskdale, but the trend is resumed further east at Robin Hood’s Bay (reference map by F. D. S. Richardson in Lees & Cox Q. Jl geol. Soc. 1937, Fig. 2). Offshore the broad Scarborough dome continues the trend, as Dr Dingle had shown; this also is limited towards the east by a north–south complication (the Phillip’s ‘anticline’), and it would seem—with some knowledge of the deep structure—that the broad gentle Fox-Strangways structure doming the Chalk to the east and south-east should be regarded as part of the same broad swell. It is thus a continuing although possibly complex feature swinging south-eastwards parallel to the Flamborough fault line.

The latter feature—the Flamborough line—was marginal to the Author's area and, as he stated, marks the boundary between the East Midland Shelf and the more mobile Cleveland area. His comments can be supplemented from information obtained in the course of hydrocarbon

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