field trip leaders: Bruce C. Miller [and others] ; authors: Sam L. Evans [and others] ; compiled and edited by Charles I. Smith ; field trip chairman: James O. Jones
edited by Thomas E. Yancey ; field trip leaders: Thomas E. Yancey, Karl J. Koenig ; field trip chairman: James O. Jones ; San Antonio, Texas, May 1984 ; host: South Texas Geologist Society
field trip leaders: Donald F. Reaser, Priscilla P. Nelson, Joe C. Yelderman ; 1990 GSA annual meeting field trip chairmen: Robert T. Clarke and Kent C. Nielsen
field trip leaders, William C. Dawson, Charles L. McNulty, Donald F. Reaser ; compiled by Donald F. Reaser ; field trip co-chairmen and editors, David E. Eby, Robert T. Clarke