Applin, Paul L. & Esther R. | "Regional Subsurface Stratigraphy and Structure of Florida and Southern Georgia"
Offprint. Presentation copy inscribed on the upper wrapper, “Compliments of the authors”, one of whom was responsible for a key insight of modern geology, that microfossils could be used to date strata.
Author Esther Richards Applin (1895-1972) and her husband Paul met when both were petroleum geologists at the Rio Bravo Oil Company. “In a paper presented at a Geological Society meeting in 1921 by her supervisor at Rio Bravo, Applin suggested that microfossils could be used to date strata. She was ridiculed by more experienced geologists for her audacity... To verify her claim, Applin worked with Alva Ellisor and Hedwig Kniker to find ways to separate the fossils from the matrix of the cuttings. In 1925, the three coauthored a paper that detailed the sequences and oil-bearing zones in the Gulf Coast using microfossils” (Biographical Dictionary of Women in Science p. 46). Together the Applins studied the oil-bearing zones of the Gulf Coast, and in 1944 they moved to Talahassee and Eleanor joined the US Geological Survey, continuing to publish and do research into the 1960s.
...reprinted for private circulation from The Bulletin of the American Association of Petroleum Geologists, Vol. 28, No. 12, December, 1944, pp. 1673-1753.
[Tulsa, OK:]: American Association of Petroleum Geologists, 1944.
Octavo. Original cream wrappers printed in black. 5 illustrations from photographs in 4 plates, maps and charts within the text. Wrappers a little faded at the spine and edges, some faint spots and mild creasing. Excellent condition.