Accession Number : AD0611129

Title :   CRUSTAL STRUCTURE IN WESTERN CANADA.

Descriptive Note : Scientific rept. no. 1, May 63-Sep 64,

Corporate Author : ALBERTA UNIV EDMONTON DEPT OF PHYSICS

Personal Author(s) : Cumming,George L. ; Maureau,Gerrit T.

Report Date : NOV 1964

Pagination or Media Count : 129

Abstract : A double-ended refraction profile was shot between Suffield, Alberta and Swift Current, Saskatchewan. A six layer earth model was obtained from these data, the crustal thickness under the east shot point (Swift Current) being 42 kms and the thickness under the west shot point (Suffield) being 51 kms. These data are similar in general form to those reported by Meyer and McCamy in Montana, just south of our line. Previous control west from Suffield has been extended into the Rocky Mountains. Since these data are not reversed, definitive interpretation is not possible. Some alternative interpretations are presented. Spectral analyses were also carried out on many of the records. Power spectra indicate that there is little change in frequency with distance from the shot point. They do, however, indicate that there are two dominant frequencies of seismic information, one at about 5 cps and another at about 10 cps. Shot environment determines which of these two is more important. (Author)

Descriptors :   (*STRUCTURAL GEOLOGY, CANADA), (*CANADA, STRUCTURAL GEOLOGY), (*SEISMOLOGY, CANADA), UNDERGROUND EXPLOSIONS, SEISMIC WAVES, PROPAGATION, VELOCITY, SEISMOGRAPHS, STRATIGRAPHY, MAPPING, GEOPHYSICS

Distribution Statement : APPROVED FOR PUBLIC RELEASE