. Annual report of the Regents. New York State Museum; Science. 'n.'Q rig. 4 Overthrust fault. 4 Reduction to a plain. The erosion, working proportionally to the elevation of the beds and, later, on the abrasion by the seas of upper Siluric and Devonic time, as evinced by the uncon- formable deposition of the limestones at Becraft mountain (Columbia county), on the " Hudson river'' shales, reduced the surface of the disturbed area to nearly or entirely the condition of a plain, leaving the steeply dipping conformable and inverted series of beds and the overthrust fault as witnesses of the
. Annual report of the Regents. New York State Museum; Science. 'n.'Q rig. 4 Overthrust fault. 4 Reduction to a plain. The erosion, working proportionally to the elevation of the beds and, later, on the abrasion by the seas of upper Siluric and Devonic time, as evinced by the uncon- formable deposition of the limestones at Becraft mountain (Columbia county), on the " Hudson river'' shales, reduced the surface of the disturbed area to nearly or entirely the condition of a plain, leaving the steeply dipping conformable and inverted series of beds and the overthrust fault as witnesses of the former powerful activity of orogenic forces (fig. 5).. Fig. 5 Profile through Hudson valley at Watervliet. The small anticlines crossing the Vly are the weak western manifestations of the fold-producing forces; for they run parallel to the greater deformations of the crust in the east, while the larger anticlines, pretty examples of which are visible along the. 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 New York State Museum; University of the State of New York. Board of Regents. Albany : J. B. Lyon, State Printer
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Keywords: ., bookauthorne, bookcentury1800, bookdecade1880, booksubjectscience
