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The AAPG/Datapages Combined Publications Database

Utah Geological Association

Abstract


Proceedings of the First International Conference on the New Basement Tectonics, 1974
Pages 437-448

A Statistical Analysis of Photolineaments and Joints, Terrain Parameters and Lineament Density Near Lethbridge, Alberta

Elkanah A. Babcock

Abstract

Measurement of 925 joints at seven localities in an area of approximately 3000 km2 near Lethbridge, Alberta indicates the presence of two vertical joint sets with mean strikes of 70 and 158 degrees. Orientations of 4792 lineament segments from the same area, each 500 m long, were measured on air photos. The lineaments group into sets having mean strikes of 52 and 156 degrees. The lineaments appear to reflect the pattern of bedrock joints, but a cause and effect relationship requires field verification.

A high density of lineaments is associated with non-cultivated land, thin glacial drift, and melt water channel sediments. Low lineament density is associated with cultivated land, thick glacial drift and aeolian sediments. Influences of terrain parameters on lineament density must be accounted for if lineaments are to be used for any type of structural analysis.


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