Items related to Geothermal data of the United States; including many...
Geothermal data of the United States; including many original determinations of underground temperature - Softcover
Synopsis
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1920 Excerpt: ...precisely. GEOLOGIC RELATIONS. The southeastern third of Missouri consists of a low dome in the center of which the pre-Cambrian granites and other rocks are exposed in the Iron Mountain region. West of this dome the strata dip west, and north of it they slope gently to the north and northwest. At Kansas City and northward the pre-Cambrian rocks are far below the surface. The wells included in the above list penetrate a great variety of strata, all on the north or west slopes of the dome. The 3,843-foot hole at St. Louis is the only one that reached the granite, but its water supply is derived from sandstones of Ordovician age. The wells at Moberly, Hannibal, Canton, Lagrange, Louisiana, Rensselaer, Gunters, Hahatonka, Fayette, Sullivan, Montgomery, Springfield, Nevada, and Richards all draw from sandstones in the Ordovician or Cambrian. The deep well near St. Joseph entered Mississippian limestones at 1,250 feet and possibly reached the St. Peter sandstone. The deep borings of Excelsior Springs are believed to draw their mineralized waters from the "Jefferson City limestone and base of the Pennsylvanian."1 The well at Campbell, in the southeast corner of the State, penetrates a thick deposit of clay of the Lagrange formation (Tertiary) and draws from the sand of the upper part of the Ripley formation (Cretaceous). The well at Utica draws water from the base of the Cherokee shale (Pennsylvanian). There is no evidence that the variations in rate of increase in temperature are related to the horizons from which the waters are derived, to structural features, or to proximity to the pre-Cambrian rocks, with the possible exception of the high rate at the Campbell well, which is in the Tertiary and Cretaceous. The St. Joseph and Utica wells which show h...
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