Since the days of R. T. Hill (1901) two Upper Cretaceous lithic units have been used as formations but have remained unnamed.

Minerals play a vital role in the economy of an industrial State. In Texas, where annual production of minerals currently amounts to more than $4.

This circular presents the history of "geological survey" in Texas from its beginning in 1858, through its intermittent early history, to [1965]. It also shows that any organization which carried the name "survey" was very short-lived in Texas.

In the past 100 years, more than 100 names have been used to designate parts or all of the outcropping Midway and Wilcox rocks in the Gulf Coastal Plain; less than half of these names are used currently by Coastal Plain geologists, and the validity of some of the remaining named rock units has be

At five places along the outcrop of the Wellborn Formation in Lee and Burleson counties, Texas, anomalously high gamma radiation is associated with concentrations of heavy minerals. The most abundant heavy minerals are ilmenite, magnetite, and zircon.