The Villafranchian Stage-Age and its radiometric dating
By Savage, Donald E. and Curtis, Garniss H.
Pp. 207-230; 3 text-figures (2 maps, 1 stratigraphic section), 6 tables, 1 long table in appendix). Original self-wrappers, 8vo. Geological Society of America Special Paper 124. The Villafranchian age is a period of geologic time (3.5-1.0 Ma) overlapping the end of the Pliocene and the beginning of the Pleistocene used more specifically with European Land Mammal Ages. Named by Italian geologist Lorenzo Pareto for a sequence of terrestrial sediments studied near Villafranca d'Asti, a town near Turin, it succeeds the Ruscinian age. This paper provides the first radiometric (Potassium-Argon) dates for the Villafranchian Stage-Age. From the library of marine vertebrate paleontologist Edward D. Mitchell with his circular name-stamp and date received on the front wrapper. No other ownership marks. This rare paper is seldom offered for sale.
|Publisher||Geological Society of America|
|Publisher Place||Boulder. CO|
|Date Published Estimated||No|
|Number of Volumes||1|
|Condition Description||A fine (as new) copy.|