John M. Armentrout grew-up in Oregon and received Bachelor of Science degrees in Biology/Chemistry (1964) and Geology (1965), and a Masters of Science in Geology (1967) from the University of Oregon. He worked as Director of Outdoor Education at the Oregon Museum of Science and Industry during 1967-70, directing field research programs and educational field trips. In 1970, John returned to school and subsequently received his Ph.D. in Geology from the University of Washington in 1973.
Following graduation, John joined Mobil Oil Corporation’s Alaska Exploration Division in Denver, Colorado, where his work included field geology along southern Alaska in preparation for Outer Continental Shelf Lease Sales. Subsequent Mobil assignments have included Oklahoma Production (1977-78), Global Basin Analysis (1979-82), Alaska Exploration (1982-85), Deep-Water Clastics Task Force (1985-88), New Exploration Ventures (1988-90), Mobil’s Dallas Research Laboratory Sequence Stratigraphy Team (1990-93) and Mobil’s Technical Services specializing in sequence stratigraphy of deep-water depositional systems (1993-2000). He retired from Mobil in 2000, and currently consults and teaches stratigraphy for his company, Cascade Stratigraphics Inc., located in Clackamas, Oregon, within the foothills of the Cascade Mountains.
John’s research interests are broad. His publications include papers on Gulf of Mexico Neogene sequence stratigraphy, biostratigraphy, geochemistry and seismic facies analysis; Northeast Pacific Ocean margin stratigraphy, molluscan biostratigraphy, and magneto-chrono-biostratigraphy, and North Sea Paleogene sequence stratigraphy. His most recent publications have focused on Gulf of Mexico and Niger Delta gravity-flow depositional systems and sequence biostratigraphy.
In 1978-79, John was a National Research Council Research Fellow at the U.S. Geological Survey. During 1992-93 he was an AAPG Distinguished Lecturer, served SEPM as President during 1996-97, and AAPG Vice-President-Sections 2007-08.