Open AccessBedrock geology, Mount Hare, Yukon, NTS 116-I/9
Author(s) -
L S Lane,
M P Cecile
Publication year - 2021
Language(s) - English
Resource type - Reports
DOI - 10.4095/290067
Subject(s) - geology , devonian , paleozoic , paleontology , carboniferous , cretaceous , late devonian extinction , trough (economics) , ordovician , sedimentary rock , sedimentary depositional environment , structural basin , economics , macroeconomics
The Mount Hare map area extends across the western limb of the Richardson anticlinorium in the southern Richardson Mountains, northern Yukon. It is underlain by four Paleozoic sedimentary successions: middle Cambrian Slats Creek Formation, middle Cambrian toEarly Devonian Road River Group, Devonian Canol Formation, and Late Devonian to Carboniferous Imperial and Tuttle formations. The Richardson trough depositional setting of the first three successions is succeeded by a deep-marine, turbiditic Ellesmerian orogenic foredeep setting for theImperial-Tuttle succession. The carbonate-dominated Road River Group defines a west-dipping homocline which is transected by oblique transverse faults in its upper part. In the overlying Imperial-Tuttle succession, map-scale folds can be defined where shales are interbedded with thick persistentsandstone units. The structural geometry reflects Cretaceous-Cenozoic regional Cordilleran tectonism.