Geophysical and geological study of surficial deposits near Frobisher, Saskatchewan
Date
1968-12
Authors
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Journal ISSN
Volume Title
Publisher
ORCID
Type
Degree Level
Doctoral
Abstract
Surface DC resistivity, total gravity field, and horizontal gravity
gradient surveys were conducted in an area of approximately 200
square miles near to the city of Estevan in southeastern Saskatchewan,
Canada. The results of these surveys, together with the first arrivals
from oil-company seismic records, were interpreted in an attempt to
locate and delineate the bedrock-drift contact and sand and gravel deposits.
Of all the techniques, only the surface resistivity technique
proved useful. It was used successfully, with certain reservations,
to indicate sand and gravel deposits, but could not be used to determine
either the thickness of, or the depth to, the deposits. The surface
resistivity technique, in conjunction with a drilling program, was used
to locate accurately the buried preglacial Missouri River channel in
the survey area.
Density, DC resistivity, texture and pebble composition studies
were made on split-barrel and chip samples obtained during a drilling
program. Laqoratory studies indicate that on the basis of the physical
properties investigated tills found in the test area cannot be
readily differentiated.
An apparent dependency of apparent resistivity on current density
was observed both in field and laboratory measurements. Measurements
were made between approximately 3 x 10-7 and 6 x 10-2 amps per square
meter. At current densities less than about 3 x 10-4
amps per square
meter, the apparent resistivity increases with increasing current density. At current densities greater than 3 x 10-4 amps per square meter, the
apparent resistivity decreases with increasing current densities.
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Degree
Doctor of Philosophy (Ph.D.)
Department
Geological Sciences
Program
Geological Sciences