|Title||A structural analysis of the Mabou Basin, Cape Breton Island using enhanced LANDSAT MSS imagery|
|Author||Milford, J C; Yatabe, S M; Fabbri, A G|
|Source||10th Canadian Symposium on Remote Sensing/10e Symposium canadien sur la télédétection; vol. 2, 1986 p. 797-806|
|Alt Series||Earth Sciences Sector, Contribution Series 2005632|
|Meeting||10th Canadian Symposium on Remote Sensing - 10e Symposium canadien sur la télédétection; Edmonton, Alberta; CA; May 5-8, 1986|
|Abstract||The Mabou Basin is a northeast-southwest trending half-graben located along the southwest coast of Cape Breton Island, Nova Scotia. Its structural development is presumed to have occurred in three
stages between the late Devonian and Triassic, including an early period of rifting, followed by a compressional phase (involving basement thrusting and folding of the sediments) and a second period of rifting, which was related to the opening of the
Bay of Fundy.|
In 1983, Chevron Canada Resources Limited outlined two promising structures for hydrocarbon exploration, the Ainslie anticline and the Port Hood Anticline. The Ainslie Anticline is the smaller of the two leads. It is located near
known oil seeps in the Horton Group and closure of the structure is known. The Port Hood Anticline is obscured at the surface, as it lies within the footwall of the Aspy Thrust Fault. Closure to the north has not been proven.
A Landsat MSS image
of southwest Cape Breton Island was purchased from the Canada Centre for Remote Sensing (CCRS) and processed at the Chevron Oilfield Research Center in La Habra, California in March 1984. This work included the production of a color composite image,
a second principal component image and a Band 7 contrast-stretched, edge-enhanced image. Interpretation of these images helped to corroborate the structural model for the area and to isolate areas for geophysical surveys.
Three lineament sets
were outlined: a northeast-southwest trend and two conjugate northwest-southeast and east-west trends. Several lineaments trending northeast-southwest were found to coincide with and extend the trace of mapped faults, even in areas where they were
not recognizable on seismic data. These lineaments may be related to any of the three different phases of regional structural development described above.
Conjugate northwest-southeast and east-west trending lineaments, exhibiting no lateral
offset of geologic units and not coinciding with contacts or faults, were interpreted as basement fracture zones which have propagated up through the basinal sediments.