Geology of the Vicinity of Little Falls, Herkimer County (Paperback)

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. 1905 Excerpt: ...the region down to the line AB, reexposing the pre-Cambrian rocks over a wide area, and leaving the Paleozoic rocks confined to the flanks of the region. Potsdam may be absent because of overlap, in which case it should be present to the south and west, under cover of the Beekmantown and still later rocks which are at the surface in those directions; or it may be absent because of nondeposition, the subsidence of the region hereabout not having commenced till the close of the Cambrian; or, lastly, it may be absent as a recognizable lithologic formation comparable with the Potsdam sandstone, for the reason that no sand was brought into the upper Cambrian sea here by currents or by streams, a limestone or a shale or both having been deposited instead. The latter alternative can only be determined by the fossils, and in their absence it is impossible to aflirm that the basal portion of the Beekmantown may not be of Cambrian age, though it is not probable. Such evidence as has been brought to light up to the present, is not sufficient to enable us to pronounce affirmatively in favor of any of the above suppositions. One or the other of them must represent the actual facts of the case. Such evidence as is available comes from the deep wells which have been drilled to the west and northwest of the district. Of these there may be specially mentioned the Remington well at Ilion, less than 3 miles west of Herkimer; the Globe mills well at Utica and the Campbell well 3 miles west of U tica; the Rome Brass & Copper Co. well at Rome; and finally the wells in Pulaski and Orwell, Oswego co.1 These wells were all drilled with churn drills, and the mashed rock fragments produced by this method of drilling are often difficult of_ proper determination. Had we diamond dri...