On Yedmandale, as illustrating the Excavation of some Valleys in the Eastern Part of Yorkshire
1854; Geological Society of London; Volume: 10; Issue: 1-2 Linguagem: Inglês
10.1144/gsl.jgs.1854.010.01-02.33
ISSN2058-105X
Autores Tópico(s)Geological formations and processes
ResumoT he Tabular Hills of the Eastern Moorlands of Yorkshire in their eastern part, that now under consideration, are very flat-topped, gradually rising from the vale of Pickering, on the south, where the elevation above the sea is about 100 feet, and attaining a height of about 600 feet at the escarpment six miles north of this, overlooking Harewood dale. The surface rock of the southern part is coralline oolite, which, however, has been removed from the northern part, where the calcareous grit is laid bare. Numerous ravine-like valleys, whose sides are inclined at an angle of about 30°, have been excavated in them, chiefly trending N.N.W.; but some are at right angles to that direction, being respectively nearly in the lines of the dip and strike of the beds, which, on the whole, lie nearly parallel to the surface. Many of these have been much modified by the streams now running in them, and present such appearances as might lead one at first to conclude that they had been altogether excavated by their action; and, indeed, there is nothing in their structure to prove decidedly that such was or was not the case. The peculiarity of Yedmandale, however, is, that there appears never to have been any brook or stream of modern drainage in its upper eastern branch, and that it is now in very nearly the same state as when first it emerged from those conditions of submersion which denuded the district. It is situated about four miles west
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