Several lists of granite wells have been published, but are now out of date, owing to the rapid increase lately in the number of such completions. The theory that granite will be found at abnormally shallow depths on domes and anticlines has been proven in so many instances that most geologists now accept it as a fact. In northeastern Oklahoma, the normal depth to granite, that is, the depth at points where the strata have not been folded, averages about 1,900 feet below the top of the Boone or Mississippian limestone.

In presenting this list (Table I) it...

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