Inhaltsangabe
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1890 edition. Excerpt: ...altitude of the mouth of the well is about 1600 feet A. T., according to Mr. Wm. Brown, to whom I am indebted for the samples of drillings. The well commenced in the upper part of the Chemung group and at a depth of about 930 feet there was a change from the greenish-gray, micaceous sandstone chips to those of greenish-blue or blue argillaceous shales, which are probably the upper part of the Portage group. The well was drilled to a depth of 2710 feet, without reaching the Genesee black shale, which indicates in this well a thickness of more than 1780 feet for the Portage. Or, since there is some doubt as to the line of separation between the Chemung and Portage, it shows that in southern New York, near the meridian of Elmira, the combined thickness of the Chemung and Portage groups is considerably more than 2700 feet, 400' 750' 880' l30' 2710' I Section of the Bird Creek Well. Altitude, estimated, 1000' A. T. First sample, greenish, non-ealcerous sandstone. Greenish-gray,micaceous sandstone,slightly calcareous. Chips partly from light gray sandstone; but mostly from a slightly purplish sandstone, which is "somewhat calcareous. Greenish-blue, non-calcareous, argillaceous shale which is probably in the upper part of the Portage. The specimens from the remainder of the well are nearly all of greenish or bluish tint, are mostly from argillaceous or arenaceous shales which are usually non-calcareous. At 2700' the chips are from a dark blue, finely arenaceous shale, which is slightly calcareous. The last sample from the bottom of the well, at 2701' is a bluish to greenish-gray, fine Drained, arenaceous rock, which is very slightly calcareous; also, there is blue argillaceous shale. Section of well drilled at Ithaca, Tompkint county, New York....
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Reseña del editor
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1890 edition. Excerpt: ...altitude of the mouth of the well is about 1600 feet A. T., according to Mr. Wm. Brown, to whom I am indebted for the samples of drillings. The well commenced in the upper part of the Chemung group and at a depth of about 930 feet there was a change from the greenish-gray, micaceous sandstone chips to those of greenish-blue or blue argillaceous shales, which are probably the upper part of the Portage group. The well was drilled to a depth of 2710 feet, without reaching the Genesee black shale, which indicates in this well a thickness of more than 1780 feet for the Portage. Or, since there is some doubt as to the line of separation between the Chemung and Portage, it shows that in southern New York, near the meridian of Elmira, the combined thickness of the Chemung and Portage groups is considerably more than 2700 feet, 400' 750' 880' l30' 2710' I Section of the Bird Creek Well. Altitude, estimated, 1000' A. T. First sample, greenish, non-ealcerous sandstone. Greenish-gray,micaceous sandstone,slightly calcareous. Chips partly from light gray sandstone; but mostly from a slightly purplish sandstone, which is "somewhat calcareous. Greenish-blue, non-calcareous, argillaceous shale which is probably in the upper part of the Portage. The specimens from the remainder of the well are nearly all of greenish or bluish tint, are mostly from argillaceous or arenaceous shales which are usually non-calcareous. At 2700' the chips are from a dark blue, finely arenaceous shale, which is slightly calcareous. The last sample from the bottom of the well, at 2701' is a bluish to greenish-gray, fine Drained, arenaceous rock, which is very slightly calcareous; also, there is blue argillaceous shale. Section of well drilled at Ithaca, Tompkint county, New York....
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