Abstract
LONDON. Geological Society, May 8.—F. M. Trotter: The glaciation of eastern Edenside, the Alston Block, and the Carlisle Plain. Three glaciations separated by intervals have been recognised. The ice of the first or Scottish glaciation deployed from the Southern Uplands, swept across the Carlisle Plain, one stream continuing eastwards, the other advancing up Eden-side, where it was joined by a stream from the Lake District. Exposures of the ground-moraine of this glaciabion are rare, and in eastern Edenside the moraine is in places overlaid by a series of contorted laminated clays, etc. These clays are in turn overlaid by the drifts of the second or main glaciation, when eastern Edenside was occupied by Lake-District ice and Cross-Fell ice. Because of the presence of Scottish ice on the north and ice from Howgill and Wild Boar Fells on the south, Edenside became congested with ice. The surface-level of the ice rose to 2200 feet at least, and probably higher. The retreat of the ice-front after the maximum of the main glaciation can be traced stage by stage. The last glaciation was the renewed advance of the Scottish ice across the Carlisle plain, up to an altitude of 400 or 500 feet O.D. At its maximum extension, and during its retreat, this glacier dammed up glacier-lakes which drained south-westwards.—J. A. Douglas: A marine Triassic fauna from eastern Persia. An account of the discovery by Mr. B. C. Jennings and Mr. K. Washington Gray, geologists of the Anglo-Persian Oil Co., of a marine Triassic fauna in the district of Naiband. Comparison with other Triassic outcrops suggests an extension of the Triassic Tethys into Persia in Carnic times, and again at a later stage, in the Rhaetie period. During the intervening Noric epoch, however, communication with the Mediterranean province was severed, while species characteristic of the Trias of the East Indies make their appearance in great numbers. There is little evidence for migration having taken place between the two areas along the ‘;Himalayan route’, and it is suggested that the continental barrier of Gondwanaland was breaking up into an archipelago of islands.
Article PDF
Rights and permissions
About this article
Cite this article
Societies and Academies. Nature 123, 930–931 (1929). https://doi.org/10.1038/123930a0
Issue Date:
DOI: https://doi.org/10.1038/123930a0