Bulletin, Issue 18

Front Cover
State of Ohio, Department of Natural Resources, Division of Geological Survey., 1915 - Geology

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Page v - Requests for information covered by previous publications. — This is furnished where the time required for copying the answer is not too large. Where the portion desired cannot be copied, the enquirer is told in what volume and page it occurs and advised how to proceed to get access to a copy of the report. 2nd. Requests for identification of minerals and fossils.
Page 26 - Montgomery counties it is not more than ten or fifteen feet thick. Still further to the northward, as appears from the records of recent drillings, the shale sometimes disappears entirely, but in the great majority of wells, especially in Hancock and Wood counties, it is a constant element, ranging from five to thirty feet.
Page 104 - ... quarries of the system occur, the thickness never reaches these figures, because of the fact that the system as it is here shown is in no case entirely complete. Its upper beds have been removed by denudation. At Jasper the quarry beds measure twenty-five feet, and at Waveily they do not fall below twenty feet. The quarry courses thin out, however, rapidly to the north and east. At Marcus Run, on the east side of the river, three miles above Waverly, there is a fine exhibition of a closed section...
Page 15 - They are lighter in color than the upper courses, and, in some instances, are slaty in structure, while in others they have a tendency to assume lenticular forms of concretionary origin, sometimes to such an extent as to destroy their value as building rock. The layers are also exceptionally heavy, attaining a thickness of 16 or 18 inches, and are often so free from fossils as to afford no indication of the kinds of life from which they were derived. A few feet above low water, at Cincinnati, a very...
Page 26 - Greene counties the shale contains in places a very valuable building-stone, which is widely known as the Dayton stone. It is a highly crystalline, compact and strong stone, lying in even beds of various thickness, and is in every way adapted to the highest architectural uses.
Page 42 - Waterlime in Ohio everywhere contains petroleum in small quantity, which is shown by the odor of freshly broken surfaces. No noteworthy accumulations of oil or gas have thus far been found within it. At some points it carries considerable asphalt, distributed through the rocks in shot-like grains, or else in -sheets and films.
Page 41 - It is brecciated throughout much of its extent, the beds seeming to have been broken into sometimes small and sometimes large angular fragments after their hardening, and then to have been recemented without further disturbance. In addition to this, it contains an immense amount of true conglomerate...
Page 138 - ... 2 4 Lower sandstone, which is similar in color and bedding to the upper one; but in places it becomes one layer, one foot eight inches in thickness. The sandstone is bluish-gray, compact, fine-grained and hard. One slab had ripple marks. This sandstone has no resemblance to the Berea, and evidently belongs in the Sharpsville sandstone of the Cuyahoga terrane. The bottom of this zone and sandstone is not known 1 8 About three miles east of Warren was the Lampson quarry, also long abandoned. Section...
Page 136 - ... 0* 7. Massive layer of blue, but frequently iron-stained sandstone. 2' 0* 6. Arenaceous gray shales and thin layers of blue sandstone . . 4' 2* 5. A massive layer of iron-stained blue sandstone, the "City Ledge" 2' 9
Page 15 - The courses vary in thickness from an inch to a foot. The lighter layers ring like pot metal under the blows of a hammer. "Ascending in the series, the limestone layers are very generally fossiliferous, and are rarely homogeneous in structure, being disfigured to a greater or less degree by chambers of shale or limestone mud, from some of which cavities, certainly, fossils have been dissolved. The thickness of the courses varies generally between the limits indicated above, but a large proportion...

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