. The geology of Holderness, and the adjoining parts of Yorkshire and Lincolnshire. Obalky Gravel, 7 feet. Boulder Olay. Sand. Boulder Olay. Sand and Gravel. Chalky Gravel, well-bedded, thining out rapidly eastwards. * See J. K. Dakyns Glacial Deposits North of Bridlington.—Proc. Geol. , , vol. vi). p. 251. BOULDER CLAY. 29 Boulder Clay. Angular Chalk debris and Gravel, wMcli dies out east of the valley. Boulder Clay. Sand, about 6 feet. Fine Chalk-wash, in twisted laminae, about 6 feet. Chalk. The lovrest bed is, like the chalky raia-wash, probably due tosub-aerial denudatio
. The geology of Holderness, and the adjoining parts of Yorkshire and Lincolnshire. Obalky Gravel, 7 feet. Boulder Olay. Sand. Boulder Olay. Sand and Gravel. Chalky Gravel, well-bedded, thining out rapidly eastwards. * See J. K. Dakyns Glacial Deposits North of Bridlington.—Proc. Geol. , , vol. vi). p. 251. BOULDER CLAY. 29 Boulder Clay. Angular Chalk debris and Gravel, wMcli dies out east of the valley. Boulder Clay. Sand, about 6 feet. Fine Chalk-wash, in twisted laminae, about 6 feet. Chalk. The lovrest bed is, like the chalky raia-wash, probably due tosub-aerial denudation or weathering, which is apt to clothe withangular debris the bottoms and sides of valleys in the Chalk. Thehigher sand-bed ends abruptly under Boulder Clay on the west;it is not a well-bedded sand, but its layers seem to be twistedback under the Boulder Clay, from west to east. A diagram byMr. Dakyns is given of the mode of occurrence of the beds, mostof which appear to be very impersistent even in a short section. Fig-. 2—Section on the west side of the Danes Dihe iScale, Owing to the thinning out of the other beds, the section on theeast side of the valley consists of the following members alone :— About 200 yards up the valley, the details of the section arequite different:— Chalk Gravel. - - - - - 4 Boulder Clay ... - - 25 Coarse irregular Chalk Gravel - 7 or fine stratified Chalk Gravel - . - — Boulder Clay, containing chiefly small Chalk fragments, a fewforeigners, and a little sand - - - - 20 The coarse Chalk Gravel cuts off one end of the Chalk-wash. A httle lower down the stream there is fine laminatedClay and Chalk-wash below the chalky Boulder Clay. In thecliff opposite Danes Dike Farm, the section has again varied :— Sand and Gravel. Boulder Clay. Sand and Clay, Warp. 30 BOULDER CLAY, SQ 00 F-s2 >* O CD ? ^^^ o CO ^^ e 5Q ^.s s § ffc> oOm i i>
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectgeology, bookyear1885
