The influence of deep fractures on some areas of Ashgillian—Llandoverian sedimentation in Wales

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Abstract
SUMMARY: Study of arenite—rudite bodies within the traditional Welsh basin reveals two contrasted modes of situation, here termed concordant and discordant It is inferred that the former represent submarine fans developed on relatively level topography and the latter represent submarine channels adjacent to (and incising) major breaks in palaeoslope. The size and disposition of these palaeoslopes makes their control by deep fractures very probable.