English Frenchman Mountain Dolostone Cited by user Paul H. on 16 Jun 2023 The Frenchman Mountain Dolostone is uppermost and youngest of five Cambrian geologic formations that comprise the Tonto Group.
English Muav Limestone Cited by user Paul H. on 10 Jun 2023 The Cambrian Muav Limestone is a geologic unit within the 5-member Tonto Group. It is about 650 ft thick at its maximum.
English Bright Angel Shale Cited by user Paul H. on 10 Jun 2023 The Bright Angel Shale is one of five geological formations that comprise the Cambrian Tonto Group.
German Tonto Group Cited by user Rudolf Pohl on 16 Feb 2022 Die Tonto Group ist eine geologische Gruppe des Kambriums im Südwesten der Vereinigten Staten.