A structural analysis of the Denison potacan sylvinite ore body, Clover Hill, New Brunswick, Canada.

摘要

The high grade (28% K;The evidence is consistent with a SE directed movement across the top of the salt body. The detachment along the weak evaporite/salt cover occurred either as a result of Late Carboniferous compression or as a result of Triassic extensional faulting.;Late Carboniferous events associated with Variscan thrusting are generally cited as the most recent major tectonic events north of the Caledonia Highlands; this viewpoint has to be reexamined. (Abstract shortened by UMI.);Three orders of folding affect the sylvinite. Many folds are non-cylindrical to sheath-like and have variable cross sectional morphologies indicative of heterogeneous strain. Slickensides are locally common and associated slickenline fibre orientations in all parts of the mine are oriented towards the NW. Palaeostress analysis in conjunction with an assumption of 2 km maximum depth of burial suggests that the deformation occurred at temperatures of 65