CGRG Bibliography of Canadian Geomorphology
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Author : Andrews, J.T. ; and Shimizu, K.
Date : 1966.
Title : Three-dimensional vector technique for analysis of till fabrics: discussion and FORTRAN program
Publication : Geographical Bulletin
Issue : 8:
Page(s) : 151-165
Abstract
A program for a three-dimensional vector analysis of till fabrics is presented for the IBM 1620 and CDC 3100 computer series. Three till fabric samples from northeast England are studied and analyzed by various methods. The samples all belong to the same till lithological unit but the preferred orientation of their pebble 'a" axes varies considerably within a 3-meter vertical section. Absence of a marked surface of accumulation or a bedding plane within till sheets may result in till fabrics with apparent orthorhombic symmetry if the horizontal plane is used to determine the sense of direction. Selection of other reference planes may show a general unimodal or monocliic symmetry, i.e. a spherical normal distribution. Spatial problems can result because of pebbles lying transverse, i.e. in the 'b' lineation, but these distributions can be analyzed separately.
Bibliography of Canadian Geomorphology