The Bend series of central Texas is a stratigraphic division of more than usual scientific and economic interest, first because it is an isolated portion of the Carboniferous separated some hundreds of miles from any outcrops equivalent to it and the problem of its exact age has never been satisfactorily solved, and secondly because of the important relation it has recently been proved to possess to the petroleum and natural gas deposits of north central Texas.
The general area of surface distribution of the Bend formations is well known. They outcrop on the east, north and west of the Llano...
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