This classic map is the foundation for decades of future geologic and Oil & Gas exploration maps throughout Texas.
In addition to 17 geologic formations – all distinctively colored - the map features four vertical profiles: Southern Trans-Pecos, Northern Trans-Pecos, Llano Estacado & Spur Well and the Central & Gulf Coastal Plains Regions. There are also four sectional profiles, Trans-Pecos, San Angelo and one across the entire state from Dimmitt in the Panhandle to Galveston.
A variety of unique sources were used to compile the information obtained by the Bureau of Economic Geology and Technology at the University of Texas, and the map was drawn while George Littlefield, W.H. Dougherty, Louis Wortham and others as were noted as serving on the Board of Regents.
The sources include a number of rare hand-drawn manuscript maps along with the detailed field notes from those cartographers as well as USGS charts, General Land Office maps, astronomic locations from the Geodetic Survey, Railroad maps, Post Office Route maps, etc. that complete the surface details of county seats, rail service in the day and major streams and rivers.
