The Geology of the Country Around Salisbury; (Explanation of Sheet 298)
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1903 edition. Excerpt: ...Pleuromya mandibula. Terebratula biplicata. Holaster kevis. Ammonites sp. denarius). Natica sp. (1 Genti) Area (Cuculloea) carinata. Cytherea sp. (? plana, young). Inoceramui concentricus. sp. (large). Lima sp. From the overlying hard grey rock were obtained: --Ammonites Hoplites sp. Area llaulini 1 Turbo sp. (not munitus). Cardiurn raulinianum? Inoceramus sp. (large). sul-hillanum). Cucullsea glabra. Pleuromya plicata? sp. Cyprina angulata. In the clay above Mr. Andrews found the following: --Am. interruptus (Fig. 31). Pecten orbicularis. Trigonia Fittoni. Inoceramus sp. Pleuromya mandibula. Pinna sp. (not Fig. 32. Ammonites Hoplites splendens, Sow. The only excavation in the Gault along the north side of the Vale is that of a brickyard at Ridge, west of Chilmark. Here about 40 feet of dark grey micaceous silty clay is seen containing a nearly continuous layer of dark grey argillaceous and calcareous mudstone or silty sandstone. Small ovoid darkcoloured septarian stones are scattered through the clay, and one of these was analysed for us by Prof. J. B. Harrison, F.G.S., of Demerara, the result showing the presence of much phosphate of lime (51-6 per cent.), carbonate of iron (6 percent.), and carbonate of lime (19'38 per cent.), the latter probably being chiefly from the calcite-veins which traversed the nodule. These phosphatic nodules are common in the Gault throughout Wiltshire and the northern part of Dorset; they run from 3 to 5 inches in length, and are often 2 inches in diameter. Fitton records the following fossils from this exposure: --Ammonites Beudanti Rostellaria carinata. dentatusinterruptus Pectunculus umbonatus. tuberculatus. Cytherea parva? selliguinus (?) Lima elongata ( = parallela d'Orb)....
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