The Tectonic Plates of Earth were mapped in 1996, Credit: Geological Survey. richardmitnick January 20, 2016December 9, 2023 sciencespringsEmailMoreTwitterLike Loading... Published by richardmitnick 68 years old, financial administrator, hiker, cyclist, PubRadio enthusiast View all posts by richardmitnick Published January 20, 2016December 9, 2023