Definition the Pliocene-Pleistocene Boundary

Abstract

THE question of defining the Pliocene - Pleistocene boundary has become important in recent years, because the practices of different geologists have varied to such an extent that deposits described in publication as Lower Pleistocene may, in fact, be of the same age as deposits elsewhere called Upper Pliocene. A similar problem is presented to geologists and palæontologists at the boundaries of other geological systems ; but the problem of where best to draw a boundary between Pliocene and Pleistocene is one which concerns also prehistorians and anthropologists.