The Quarterly journal of the Geological Society of London . of thechalk-escarpment and the valley of theThames. The above sections are in a districtwhere the boulder-clay of the LowerErratics is wanting; but in the sections(figs. 5 & 6), which I reproduce from theJournal of the Royal AgriculturalSociety, vol. vii. p. 484, I exhibit cases,very common throughout Norfolk, ofpipes and furrows in the denuded sur-face of the Boulder-clay which are filledwith the warp-drift. Fig. 3. This is a section over a chalk-pit at Guest, between Fakenham andFoulsham. In this case two contiguoussets of pipes hav
The Quarterly journal of the Geological Society of London . of thechalk-escarpment and the valley of theThames. The above sections are in a districtwhere the boulder-clay of the LowerErratics is wanting; but in the sections(figs. 5 & 6), which I reproduce from theJournal of the Royal AgriculturalSociety, vol. vii. p. 484, I exhibit cases,very common throughout Norfolk, ofpipes and furrows in the denuded sur-face of the Boulder-clay which are filledwith the warp-drift. Fig. 3. This is a section over a chalk-pit at Guest, between Fakenham andFoulsham. In this case two contiguoussets of pipes have different infillings—crag in the one, warp-drift in the other. Fig. 4. A section near Desborough,Northamptonshire. A pipe in sand is * See Table, Quart. Journ. Geol. Soc. vol. ix-p. 295. 236 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Jail. 18, filled with Boulder-clay. This is the only case I have ever observedof pipes so filled. Fig. 3.—Section of Pipes, filled ivith Warp-drift and with Crag,in a Chalk-pit at Guest, betiveen Fakenham and a. Warp-drift; sandy loam. 6. Sand of the Crag. Fig. 4.—Section of Pipes filled with Boulder-clay, near Desborough,Northamptonshire (on the Harborough side of the village).
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectgeology, bookyear1845
