. Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments. Geology. 284 UPPER EOCENE FORMATIONS. [Ch. XVI. our knowledge extends, is far more limited than that of the testacea, the occurrence of so many species at Binstead, agreeing with fossils of the Paris gypsum, strengthens the evidence derived from shells and plants of the synchronism of the two formations. Osborne or St. Helen's series, A. 2.—This group is of fresh and brackish-water origin, and very variable in mineral character and thickness. Xear Kyde, it supplies a freeston
. Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments. Geology. 284 UPPER EOCENE FORMATIONS. [Ch. XVI. our knowledge extends, is far more limited than that of the testacea, the occurrence of so many species at Binstead, agreeing with fossils of the Paris gypsum, strengthens the evidence derived from shells and plants of the synchronism of the two formations. Osborne or St. Helen's series, A. 2.—This group is of fresh and brackish-water origin, and very variable in mineral character and thickness. Xear Kyde, it supplies a freestone much used for building, and called by Professor Forbes the Nettlestone grit. In one part ripple-marked flagstones occur, and rocks with fucoidal markings. The Osborne beds are distinguished by peculiar species of Paludina, Melania, and Melanopsis, as also of Cypris and the seeds of Cham. Headon series, K. 3.—These beds are seen both in Whitecliff Bay and in Headon Hill, or at the east and west extremities of the Isle of Wight. The upper and lower portions are freshwater, and the middle of mixed origin, sometimes brackish and marine. Everywhere Planorbis euomphalus, fig. 221, characterizes the freshwater deposits, •Fig. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Lyell, Charles, Sir, 1797-1875. New York, D. Appleton and co.
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectgeology, bookyear1868
