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Published online by Cambridge University Press: 01 May 2009
The great Valley of the Thames has long been known to contain deposits of gravel intermixed with freshwater beds; but the true Geological age both of the valley of its deposits was long in doubt. Latterly the view expressed by Mr. Prestwhich (in which he was of accord both with Professor Morris and Mr.Trimmer), that the whole was newer than the Boulder-clay, has met with acquiescence. The general structure of the deposits in this valley, although they form the most extensive of the Post-Glacial series in England, has not however yet been shown in any comprehensive manner.
page 57 note 1 Quart. Journ. Geol. Soc., vol. xii., p. 131Google Scholar. See also map in paper in Phil. Trans., 1864, Part II.Google Scholar
page 57 note 2 Phil. Trans., 1864, Part II.Google Scholar
page 57 note 3 Ibid., p. 255.
page 57 note 4 Ibid., pp. 273–4.
page 57 note 5 Quart. Journ. Geol. Soc., vol. xii., p. 133.Google Scholar
page 59 note 1 Shooters' Hill forms an isolated remnant of the original valley, in which the Thames gravel was deposited; the valley, as will be shown, having on the east of London, with that exception, had its southern slope destroyed by subsequent events.
page 59 note 2 The gravel occupying the higher ground above the Thames gravel to the west, beyond Uibridge, is the gravel of the Middle-drift, a formation older than the Boulder-clay.
patg 59 note 3 Mem. on sheet 7 of Geol. Survey. Mr. Whitaker also (p. 92) points out the discrepancy between the section given by Mr. Prestwich, in his “Ground beneath Us,” of the position of the gravel of Clapham and Wandsworth relatively to that of the Wandle valley and the true position of those gravels, and I agree with, Mr. Whitaker in so far as he says that the Wandsworth and Clapham gravels join in one part with the gravel of the Wandle valley, for I have traced the Wandsworth and Clapham gravels on their south-western side into inosculation with that of the Wandle valley, down Burntwood-lane, as well as on the north side into inosculation with the gravel nearer the Thames that sweeps round into the Wandle valley.
page 60 note 1 A thin band of shingly gravel occurs in it towards the upper part.
page 60 note 2 Morris, Quart. Journ. Geol. Soc., vol. vi., p. 201Google Scholar. Prestwhich, ,ib., vol. xi., p. 107.Google Scholar
1 Mostly of yew, but oak and pine occasionally occur.
