trip leaders, Kerry E. Sieh and Jonathan C. Matti ; prepared for the 35th annual meeting, Association of Engineering Geologists, Long Beach, California
International Workshop-Field Seminar on Lacustrine Facies Models in Rift Systems and Related Natural Resources (1988 : Barcelona and Rubielos de Mora, Spain)
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