Discussion of basins and swells in the British Jurassic
Some usages by Sellwood & Jenkyns (1975), in particularof the term ‘swell’, are criticized as potentiallyconfusing, and clarification of their proposals regarding therole of basement faulting in controlling sedimentation is sought.Aspects of the palaeogeography of Scotland are stressed as contrasting,notably in strong rejuvenation of source areas during the Jurassic,with the situation described by Sellwood & Jenkyns fromsouthern England. The significance of ‘swells’ issubsequently outlined in terms of assumed structural, topographicand palaeogeographic role. Intra-Jurassic differential faultmovements, like those already well known from offshore Britain,are reaffirmed as the probable mechanism governing the natureand sequence of Pliensbachian to Bajocian facies in Britain.
