Bulletin of the United States Geological SurveyThe Survey., 1904 |
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anticline Ashley Hill beds of quartzite Beekmantown Beekmantown shale brecciated brian calcareous quartzite Cambrian area Cambrian beds Cambrian shale Chatham Chazy chlorite Columbia County conglomerate crustal movement Curtis Mountain DALE denudation deposits Diagram section dolomite East Greenbush feet thick Foerste folded fossil localities fossiliferous limestone GEOLOGICAL SURVEY geology graptolites gray shale green shale greenish shale half mile Hoosic Hudson formation Hudson grit Hudson shale Hudson Valley interbedded Kinderhook Lansingburg limestone Lower Cam metamorphic mile south miles east Nassau North Greenbush Oldhamia Olenellus fauna Ordovician outcrop outlier paper pebbles PETROGRAPHY plagioclase Poesten Kill quartz quartz grains red and green red shale reddish and greenish Rensselaer County Rensselaer grit Rensselaer Plateau ridge rocks Ruedemann Schaghticoke schist Schodack shale with small shown in fig Silurian small beds small quartzite beds STRATIGRAPHY structure syncline Tackawasick Pond Taconic Range Trenton Troy typical U. S. Geol unconformity underlain Upper Cambrian Walcott Washington County
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Seite 63 - The serial publications of the United States Geological Survey consist of (1) Annual Reports, (2) Monographs, (3) Professional Papers, (4) Bulletins, (5) Mineral Resources, (6) Water-Supply and Irrigation Papers, (7) Topographic Atlas of United States — folios and separate sheets thereof, (8) Geologic Atlas of United States — folios thereof.
Seite 11 - DALE, T. NELSON. The slate belt of eastern New York and western Vermont: Nineteenth Ann.
Seite 63 - Geology and water resources of the Patrick and Goshen Hole quadrangles in eastern Wyoming and western Nebraska, by GI Adams. 1902. 50 pp., 11 pis. B 199. Geology and water resources of the Snake River Plains of Idaho, by IC Russell.
Seite 7 - Very respectfully, CW HAYES, Geologist in Charge of Geology. Hon. CHARLES D. WALCOTT, Director United States Geological Survey.
Seite 44 - Ill, shows the (inconformable relations between the large synclinal outlier of Hudson shale and the Lower Cambrian; also that between the Silurian Rensselaer grit and the Lower Cambrian, as well as the overthrust at the west which has brought the Lower Cambrian on to the, Hudson. The section involves three periods of folding, one at the close of the Lower Cambrian, another at the close of the Ordovician, and still another which metamorphosed and folded the Silurian beds. That these last two movements...
Seite 12 - ... general geological relations of the manganese belt can only be inferred by correlating certain type specimens with those known to exist farther north along the strike, as described by TN Dale (4). In referring to the areal distribution of the principal formations of the region, this writer says that " at the north the Cambrian belt narrows and is bordered on both sides by Ordovician shale and grit. Ordovician schist, the metamorphic equivalent of the shale and grit, constitutes the Taconic range...
Seite 11 - RUEDEMANN, RUDOLF. The Cambric Dictyonema fauna in the slate belt of eastern New York: Rept. of the New York State Paleontologist for 1902, pp. 934-958, 1903. 21. DALE, T. NELSON. Taconic physiography: Bull. US Geol. Survey No. — (in preparation).
Seite 10 - ... years through the Cambro-Ordovician belt, along the west side of the Taconic Range, in Washington County, NY, and Rutland County, Vt., has thrown much light on the relations of these formations in the Hudson Valley, and will facilitate the interpretation of the phenomena to be described.
Seite 10 - On the age of the glazed and contorted slaty rocks in the vicinity of Schodack Landing, Rcnsselaer County, NY: Am.