Report of Progress

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Board of Commissioners for the Second Geological Survey, 1883
35 vols. are atlases.
 

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Seite xxvi - such determinations have been submitted to repeated criticism ; and until still more punctilious examinations of the series of rock layers holding such uncanonical forms shall have been made by other geologists. The startling fossil species of this report will therefore be regarded by the
Seite 76 - are of the common Hamilton forms. It may be merely the upper portion of the Hamilton ; but as the beds immediately above it are certainly the representatives of the New York Genesee, there can be no impropriety in referring the limestone to the Tally horizon.
Seite 31 - been given to that great downward fold of the rocks which, entering the district at the extreme northeast corner of Lackawanna county as a narrow, shallow trough, gradually deepens and broadens toward the southwest, until in the vicinity of Wilkes-Barre it retains the entire Coal Measure series, and possibly a small cap of the
Seite 406 - Chunk shale (No. XI) if not in the body of the Conglomerate, (No. XII.) The rise of the measures eastward also justifies Prof. White in assigning the whole of Wyoming county east of the Susquehanna river to the Catskill formation. (No. IX.) Daddow's opening (No. 3) mentioned by Mr. Platt in Report of Progress,
Seite xxi - never seen any two of the three species co-existing in the same stratum, or at the same horizon, nor outside the limits of the typical Chemung. He would not be surprised if
Seite 231 - •''block ore." The original rock is a hard, and rather impure limestone filled with fossils, which near the surface has lost its lime through solution ; the iron oxide being left in a soft, loose, spongy condition. As the bed gets below the action of surface waters, it passes into
Seite 360 - Dark shales and slates often exhibiting cleavage and much weathered so that the bedding planes can only occasionally be made out when the dip is 8. 10° E. about

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