The geology of soils and substrata, with special reference to agriculture, estates, and sanitation . FIG. 26.—SECTION ABOUT ONE MILE SOUTH OF SURLIXGHAMST. MARY, NEAR NORWICH.* 2, Chalky Boulder Clay, mostly decalcified. Brown stony loam with unweathered remnants of Chalky Boulder Clay, 3 , Blue clay and laminated clay and sand, contorted, 5 1, Soil and decalcifiedBoulder Clay, 2 or3 feet. 4, Chalky Boulder Clay,about 5 feet. 3, Chalky sand, i| feet. 2, Yellowish laminatedclays and bands ofmarl, 6 feet. i, Chalky Boulder Clay. FIG. 27.—PIT NORTH-WEST OF DOVE INN, PORINGLAND, NORFO
The geology of soils and substrata, with special reference to agriculture, estates, and sanitation . FIG. 26.—SECTION ABOUT ONE MILE SOUTH OF SURLIXGHAMST. MARY, NEAR NORWICH.* 2, Chalky Boulder Clay, mostly decalcified. Brown stony loam with unweathered remnants of Chalky Boulder Clay, 3 , Blue clay and laminated clay and sand, contorted, 5 1, Soil and decalcifiedBoulder Clay, 2 or3 feet. 4, Chalky Boulder Clay,about 5 feet. 3, Chalky sand, i| feet. 2, Yellowish laminatedclays and bands ofmarl, 6 feet. i, Chalky Boulder Clay. FIG. 27.—PIT NORTH-WEST OF DOVE INN, PORINGLAND, Here we have Glacial muds formed during temporary recession ofthe land-ice, afterwards overridden by the ice and eroded. r H. B. Woodward, Gcol. Ma^., 1897, p. Ibid., p. 493. QUATERNARY DEPOSITS (PLEISTOCENE) 233 portions are here and there turned up. The weatheredportions, as near Halstead in Essex, form a strong brownstony and sticky loam or clay that is not naturally fertile.(See p. in.) The loamy soil in Essex renders it difficult sometimesto determine whether the subsoil is Boulder Clay or LondonClay. There are also tracts of bright sandy loam over theBoulder Clay that appear to be a separate deposit, and notdecalcified material. In many cases unweathered remnantsof Chalky Boulder Clay may be seen in pits and cuttingsin the mids
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectgeology, bookyear1912
