. Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments. Geology. B K. Mr. Kyland's house. h. Clay and sand of higher grounds, with Saxicava, &c. g. Gravel with boulders. / Mass of Saxicava rugosa, 12 feet thick, c. Sand and loam with Mya truncata, Scalaria Graznlandica, & d. Drift, with boulders of syenite, &c. c. Yellow sand. o. Laminated clay, 25 feet thick. A. Horizontal lower Silurian strata. B. Vallev re-excavated. the valley, B, was once filled up with the beds b, c, d, e, /, which were deposited during a peri
. Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments. Geology. B K. Mr. Kyland's house. h. Clay and sand of higher grounds, with Saxicava, &c. g. Gravel with boulders. / Mass of Saxicava rugosa, 12 feet thick, c. Sand and loam with Mya truncata, Scalaria Graznlandica, & d. Drift, with boulders of syenite, &c. c. Yellow sand. o. Laminated clay, 25 feet thick. A. Horizontal lower Silurian strata. B. Vallev re-excavated. the valley, B, was once filled up with the beds b, c, d, e, /, which were deposited during a period of subsidence, and that subsequently the higher country (h) was submerged and overspread with drift. The partial reexcavation of B took place when this region was again uplifted above the sea to its present height. Among the twenty-three species of fossil shells collected by me from these beds at Beauport, all were of recent northern species; the only supposed exception, Astarte Laurentiana, being now considered by good conchologists as a variety of the British A. compressa (see fig. 139). I also examined. 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
