Maps of Central Texas
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Blue/Green Highlighted Counties Defined as "Central Texas"
Counties shaded in blue display the extent of the Llano Uplift Counties shaded in green are included as "Central Texas Counties" Bell, Williamson, Travis and Bexar straddle the Ouchita Fault Zone.
Geologic Map of Llano & Burnet Quadrangles Highlighting Mines & Prospects_1910
Geologic Map (1:750,000) by A.C. Spencer, Sidney Paige, W.S. Bayley and Fred H. Kay Highlighting quarries, mines and prospects in the early 1900's. Reference: Paige, Sidney, Mineral Resources of the Llano-Burnet Region, with an account of the PreCambrian Geology, 1911, USGS Bulletin 450, 103 p.