| Title | Near-surface geophysical techniques for geohazards investigations: Some Canadian examples |
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| Author | Hunter, J A; Burns, R A; Good, R L; Pullan, S; Pugin, A; Crow, H |
| Source | The Leading Edge vol. 29, no. 8, 2010 p. 936-947, https://doi.org/10.1190/1.3480011 |
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| Year | 2010 |
| Alt Series | Earth Sciences Sector, Contribution Series 20100070 |
| Publisher | Society of Exploration Geophysicists |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Subjects | geophysics; engineering geology; geophysical surveys; geophysical interpretations; electromagnetic mapping; e m surveys; soil types; terrain sensitivity; terrain types; landslides; slope stability;
slope deposits; slope failures; earthquake studies; earthquake risk; earthquakes |
| Illustrations | location maps; profiles; logs |
| Program | Public Safety Geoscience Eastern Canada Geohazards Assessment Project |
| Released | 2010 08 01 |
| Abstract | Over the last 40 years, there has been an expansion of activity in applications of near-surface geophysical techniques for various types of geohazards investigations in Canada; numerous national and
international research groups have been working with the Near Surface Geophysics Section of the Geological Survey of Canada to develop techniques for specific Canadian engineering and environmental geohazards problems. A few of the more interesting
examples from widespread parts of the country are discussed in this paper.
Canada is a northern country that has a unique near-surface geological history as exemplified by its particular unconsolidated overburden and bedrock conditions. From the
point of view of engineering geophysics, a thumbnail sketch of the relevant geological conditions is as follows:
The central part of the country contains a large expanse of PreCambrian rock (the so-called Precambrian Shield) where outcrops
abound. Onlapping the Shield rocks are progressively younger rock, primarily Paleozoic and younger sedimentary rock. Mountain building can be found on eastern, western, and northern boundaries of the country. Earthquake activity is associated with
all of these areas; however, the highest hazard associated with urban centers occurs in some areas of the west coast of British Columbia. A modest, but still significant, shaking hazard can be found in the Ottawa-St. Lawrence River lowlands.
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| GEOSCAN ID | 285483 |
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