Abstract
Apatite fission-track (AFT) data from rocks above and below Lewis thrust fault lying in the footwall and hanging wall of Flathead normal fault record different thermal-history components, depending on individual structural and stratigraphic positions. Apatite fission-track temperature-history models (THMs) indicate that rapid cooling of the Lewis thrust sheet began at about 75 Ma. This cooling coincided with major displacement on the Lewis thrust. Subsequently, folding of the Lewis thrust sheet by underlying thrust duplex culminations formed the Akamina syncline, and a fossil AFT partial annealing zone was superimposed on the syncline. Apatite fission-track data from east of the Flathead...
Original language | English |
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Title of host publication | Deformation, Fluid Flow, and Reservoir Appraisal in Foreland Fold and Thrust Belts |
Editors | Rudy Swennen, François Roure, James W. Granath |
Publisher | American Association of Petroleum Geologists |
Volume | 1 |
ISBN (Electronic) | 9781629810461 |
ISBN (Print) | 0891819002 |
DOIs | |
State | Published - Jan 2004 |