Radiolarian ages from chert pebbles of the Tantalus Formation, Carmacks area, Yukon Territory

• Main Author: Cordey, Fabrice
• Other Authors: Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement (LGL-TPE), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 1992
• Subjects: [SDU]Sciences of the Universe [physics]; [SDU.STU]Sciences of the Universe [physics]/Earth Sciences; Yukon; Carmacks; Teslin; Teslin Plateau; Whitehorse
• Online Access: https://hal.science/hal-03274889; https://hal.science/hal-03274889/document; https://hal.science/hal-03274889/file/Cordey1992_Tantalus_GSC_CR.pdf

International audience Eighteen chert pebbles from three levels of the Late Jurassic-Cretaceous Tantalus Formation conglomerate near Carmacks contain radiolaria of Triassic (Ladinian-Carnian, Late Carnian-Middle Norian, Middle Norian, Late Norian) age. The known ages of chert pebbles from the Tantalus Formation near Whitehorse and Carmacks, which range from the Early Permian to the latest Triassic, diJferfrom the age of Paleozoic chert-bearing units located to the northeast of the Tintina Fault. They more closely resemble the age of ribbon cherts of the northeastern part of the Northern Cache Creek Terrane (Teslin Plateau) in southern Yukon.