 | 1800 - 376 σελίδες
...second element of the Waverly series, and not only the most important member of the series, but by far the most important single stratum in the entire geological...dips beneath the surface it becomes the repository of invaluable supplies of petroleum, gas and salt water. Its persistence as a stratum is phenomenal. Seldom... | |
 | John Franklin Carll - 1890 - 380 σελίδες
...second element of the Waverly series, and not only the most important member of the series, but by far the most important single stratum in the entire geological...dips beneath the surface it becomes the repository of invaluable supplies of petroleum, gas and salt water. Its persistence as a stratum is phenomenal. Seldom... | |
 | Ohio. State Geologist - 1890 - 354 σελίδες
...second element of the Waverly series, and not only the molt important member of the series, but by far the most important single stratum in the entire geological...dips beneath the surface it becomes the repository of invaluable supplies of petroleum, gas and salt-water. Its persistence as a stratum is phenomenal. Seldom... | |
 | Henry Howe - 1890 - 820 σελίδες
...element of the Wavcrly scries, and not only the most important member of the series, but by far me most important single stratum in the entire geological...dips beneath the surface it becomes the repository of invaluable supplies of petroleum, gas, and salt-water. Its persistence as a stratum is phenomenal.... | |
 | Geological Survey of Ohio - 1893 - 1322 σελίδες
...second element of the Waverly series, and not only the most important member of the series, but by far the most important single stratum in the entire geological...dips beneath the surface it becomes the repository of invaluable supplies of petroleum, gas and salt-water. Its persistence as a stratum is phenomenal. Seldom... | |
 | Henry Howe - 1896 - 1042 σελίδες
...second element of the Wavcrly scries, and not only the most important member of the series, but by far the most important single stratum in the entire geological...best grindstone grit of the country, and when it dips beneatn the surface it becomes the repository of invaluable supplies of petroleum, gas, and salt-water.... | |
 | Henry Howe - 1898 - 1006 σελίδες
...element ot'thc \\ '¡ivcrly series, and not only the most important member of the series, but by fur the most important single stratum in the entire geological...dips beneath the surface it becomes the repository of invaluable supplies nf petroleum, gas. and salt-water. Its persistence as a stratum is phenomenal.... | |
 | Geological Survey (U.S.) - 1898 - 964 σελίδες
...grindstones, and its porosity makes it a reservoir for petroleum and gas. According to Prof. Edward Ortou,1 it is "the most important single stratum in the entire...greater below. In its outcrops it is a source of the linest building stone and the best grindstone grit of the country, and when it dips beneath the surface... | |
 | Ohio. Division of Geological Survey - 1903 - 388 σελίδες
...miles, or more than one-third of the area of the state. Its value is commensurate with its extent. "Its economic value above ground is great, but it is greater below. In its outcrop it is a source of the finest building-stone and the best grindstone grit of the country, and... | |
 | Ohio. Division of Geological Survey - 1903 - 386 σελίδες
...miles, or more than one-third of the area of the state. Its value is commensurate with its extent. "Its economic value above ground is great, but it is greater below. In its outcrop it is a source of the finest building-stone and the best grindstone grit of the country, and... | |
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Its economic value above ground is great, but it is greater below. In its outcrops it is a source of the finest building stone and the best grindstone grit of the country; and when it dips beneath the surface it becomes the repository of invaluable supplies... 