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Cordilleran Front Range Structural Features In Northwest Montana Interpreted From Vintage Seismic 2 Reflection Data, Mason Porter
Cordilleran Front Range Structural Features In Northwest Montana Interpreted From Vintage Seismic 2 Reflection Data, Mason Porter
Graduate Theses & Non-Theses
Industry seismic reflection data were collected in 1983 in the Rocky Mountain Cordillera front ranges of northwest Montana. These seismic profiles represent 160 km of deep reflection data that cross the eastern Purcell anticlinorium, Rocky Mountain Trench (RMT), Rocky Mountain Basal Detachment (RMBD), and Lewis thrust. We have reprocessed these data using modern processing techniques including refraction statics, pre-stack time migration (PSTM), and pre- and post-stack depth migration. The RMT contains Tertiary fill to 1 km depth and the RMT fault system has a minimum of 3-4 km of normal displacement. The RMT and Flathead fault systems are interpreted to …