The geology of soils and substrata, with special reference to agriculture, estates, and sanitation . the soil isa rich marly and heavy loam, but not so stiff as theLondon Clay. The ground has often a park-like aspect,with broad strips of grass-land bordering the roads, andmany ponds, excavated in old times as marl-pits, othersto supply water for cattle, and even for the humanpopulation. Alternations of Boulder Clay, sand and gravel, loam,/marl, and fine laminated clay, may be observed in districtscovered by Glacial Drift. In Norfolk such occurrences arewell shown in the cliffs between Weybourn
The geology of soils and substrata, with special reference to agriculture, estates, and sanitation . the soil isa rich marly and heavy loam, but not so stiff as theLondon Clay. The ground has often a park-like aspect,with broad strips of grass-land bordering the roads, andmany ponds, excavated in old times as marl-pits, othersto supply water for cattle, and even for the humanpopulation. Alternations of Boulder Clay, sand and gravel, loam,/marl, and fine laminated clay, may be observed in districtscovered by Glacial Drift. In Norfolk such occurrences arewell shown in the cliffs between Weybourn and Happis-burgh, and so disturbed and contorted are the beds in 234 GEOLOGY OF SOILS AND SUBSTRATA many places, that inland a gravel-pit and a clay-pit maybe opened in close proximity and in fairly level ground.(See Fig. 28.) Much of the contorted Drift of Norfolk is a brownstony loam, which is seen in a few places beneath theblue Chalky Boulder Clay. It forms highly fertile landsin the north-east of Norfolk and near Norwich, havinga soil 2 or 3 feet deep of rich, calcareous, sandy, and 2 ±*k. FIG. 28.—PIT BY SPIXXY, NORTH-WEST OF THORPE LIME-KILX, NORWICH.* 2, Plateau Drift. Gravel and sand, 3 to 4 feet. i, Contorted Drift. Stony loam with contorted seams and massesof sand and gravel, 16 feet. Here the disturbances were produced by the ice-sheet that formedthe Chalky Boulder Clay before the Plateau Drift was deposited.* somewhat stony loam, which passes westwards into areasof marl. According to Arthur Young (1804), this loamyarea constitutes one of the finest tracts of land that isanywhere to be seen. Alternations of Boulder Clay, sand and gravel, etc., arewell seen in the cliffs of Blackpool, Lancashire, inLeicestershire and Derbyshire, Lincolnshire and Holder-ness in Yorkshire, at Criccieth in Carnarvonshire, and * H. B. Woodward, Gcol. Mag., 181)7, P- 49°- QUATERNARY DEPOSITS (PLEISTOCENE) 235 many other places. The term rammel is locally appliedto Boulder Clay in Lei
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectgeology, bookyear1912
