. The Quarterly journal of the Geological Society of London. e believe the Preglacial floor to havepossessed in this part. So complete, however, has been the denuda-tion of the Contorted Drift over the range of the Suffolk coast-section,that its former spread over this area would not have been suspectedwere it not for the thick outliers of it which remain far away inSouth Suffolk, and one or two nearer exposures of it inland thatrise as bosses through the Middle Glacial sands which have beenbedded around them. For the same reason its spread over the Ked-Crag area would be similarly unsuspected
. The Quarterly journal of the Geological Society of London. e believe the Preglacial floor to havepossessed in this part. So complete, however, has been the denuda-tion of the Contorted Drift over the range of the Suffolk coast-section,that its former spread over this area would not have been suspectedwere it not for the thick outliers of it which remain far away inSouth Suffolk, and one or two nearer exposures of it inland thatrise as bosses through the Middle Glacial sands which have beenbedded around them. For the same reason its spread over the Ked-Crag area would be similarly unsuspected, inasmuch as, in all thenumerous sections of the Red Crag and its associated unfossiliferoussands that are deep enough to show any formation resting on them, LATER TERTIARY GEOLOGY OF EAST ANGLIA. 81 this crag and associated sands are capped directly by the MiddleGlacial in the way shown by section III. Fig. 3.—Section III., in a Coprolite-pit by Foxhcdl Hall. (Theactual section was in several terraces, which are here of section 45 feet.). a. Red Crag unaltered. b. Red sands and partly indurated loamy saad horizontally stratified, being a altered and restratified. c. Middle Glacial, being false-bedded gravel at base and changing upwards into stratified gravelly sand. From the uniform appearance thus presented by all the numeroussections along the flanks of the Deben, Orwell, and Stour estuaries,not only would it appear as though no formation had intervenedbetween the Red Crag and the Middle Glacial, but also that thevalleys of these estuaries had been excavated subsequently to thedeposit of the Middle Glacial. The exposures of the Contorted Driftto which we shall have to refer as protruding on the summits of thetablelands dividing these estuaries show, however, as it seems tous, that this was not the case, but that the line of denudation orunconformity separating the Crag from the Middle Glacial in allthese sections is due to that general interglacial denudati
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