Robert Cuthbert

2000 - Effective Writing Award (Thin Thesis Award)

The Burwash Formation is an extensive package of Archean volcanic-turbidite sedimentary units in the Slave Province, Northwest Territories. The turbidites are metamorphosed to greenschist facies, and have undergone two episodes of deformation. The F₁ generation folds were refolded forming a fold interference pattern, intermediate between dome, and mushroom shape. Cleavage is axial planar to F₂ fold hinges. Rare volcanic tuff sequences provide good markers for stratigraphic correlation and strain analysis. Bulk strain was determined by two different methods, the Fry, and Rf/Phi. In both cases a prolate ellipsoid is found, with the long axis steeply plunging. The prolate shape is consistent with two episodes of plain strain.

Keywords: Burwash, volcanic-turbidite, sedimentary, folds, dome, strucrural.
Pages: 105
Supervisors: John Waldron