. The Annals and magazine of natural history; zoology, botany, and geology . us origin emerging from centreson the Continent, appear wholly to have formed the valleys which * The three deposits are by him placed in the following descending order: Loess {limon Hesbayen); Sables Campiniens; Cailloux Although these three series form the principal valleys of this pai-t ofEngland, a close investigation of the Ordnance Sheets appears to discloseotherinequalities of surface, that are parts of circles originating at much moreremote centres, and whose effect has, from distance, become proporti
. The Annals and magazine of natural history; zoology, botany, and geology . us origin emerging from centreson the Continent, appear wholly to have formed the valleys which * The three deposits are by him placed in the following descending order: Loess {limon Hesbayen); Sables Campiniens; Cailloux Although these three series form the principal valleys of this pai-t ofEngland, a close investigation of the Ordnance Sheets appears to discloseotherinequalities of surface, that are parts of circles originating at much moreremote centres, and whose effect has, from distance, become proportionatelyfeeble. I hope at a future day to show the whole grouping of these circularphenomena, and the effect of their reciprocal pressure in France and Bel-gium, as well as in England, and the manner in which, in the south of thiscountry, subsequent but more localized and powerful movements have su-pervened on them. The short notice of them published in the Phil. very incomplete, and in some respects imperfect. the Upper and Loxoer Drift of the Eastern Counties. 399. 400 Mr. S. V. Wood on the Belgian Equivalents of cut through or exist in the Loess itself. If, therefore, the Boulder-clay or upper Drift of England has been acted upon by move-ments which have similarly affected the Loess of Belgium, itfollows that both deposits had been thrown down before thesemovements began. It can be shown that these movementshave not affected the postpliocene gravels that rest on surfacesfrom which the upper Drift has been denuded *, so that theymust have originated prior to these gravels having been depo-sited ; and since, from the great area over which the denudationhas extended, we can attribute it to nothing but the action ofthe sea, we must assume either that it resulted during an emer-gence of the bed of the upper-Drift sea, or that a second generalsubmergence and elevation took place. Although the evidencecollected by geologists appears to me to indicate that parts of thesouth of
Size: 1207px × 2072px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookce, booksubjectbotany, booksubjectgeology, booksubjectzoology
