Publication information

Geological Survey of Canada
Open File 7077

Downhole geophysical logging and preliminary analyses of bedrock structural data for groundwater applications in the Montérégie Est area, Québec

H.L. Crow1, P. Ladevèze2, M. Laurencelle2, N. Benoit3, C. Rivard3, R. Lefebvre2

1 Geological Survey of Canada (Ottawa), 601 Booth Street, Ottawa, ON K1A 0E8
2 Institut national de la recherche scientifique, 490 rue de la Couronne, Québec, QC G1K 9A9
3 Geological Survey of Canada (Quebec), 490 rue de la Couronne, Québec, QC G1K 9A9

© Her Majesty the Queen in Right of Canada 2013

doi:10.4095/292295 

Publications in this series have not been edited; they are released as submitted by the author.

Recommended citation
Crow, H.L, Ladevèze, P., Laurencelle, M., Benoit, N., Rivard, C., and Lefebvre, R., 2013.  Downhole geophysical logging and preliminary analyses of bedrock structural data for groundwater applications in the Montérégie Est area, Québec; Geological Survey of Canada, Open File 7077. doi:10.4095/292295

Contents
To support the Montérégie Est regional aquifer characterization study carried out by the Geological Survey of Canada (GSC) and the Institut national de la recherche scientifique - Centre Eau Terre Environnement (INRS-ETE), downhole geophysical logging was conducted during the fall of 2011 in twelve boreholes located in between Montreal, Sherbrooke, and Drummondville, QC. The objective was to provide the project with a high-quality dataset of downhole geophysical and hydrogeological information. In situ measurements of bedrock fracture orientation and flowmeter readings represent an especially important element of this dataset, as these bedrock features typically represent the main pathway for groundwater movement in rock aquifers in the study area.

The following report outlines the fieldwork and data analyses carried out in 12 boreholes drilled between 2010 and 2011. The analysis of structural data resulting from the interpretation of twelve acoustic televiewer images is presented along with a discussion summarizing the results of the logging, recommendations for future work, and topics of ongoing research.

Directory structure
OF_7077.PDF (report and Appendices I, II, & III)
Readme_OF_7077.rtf 
licence_agreement.rtf
Appendix IV – Flowmeter Summaries (folder) contains 6 excel spreadsheets
Appendix V – Digital Log Data (folder) contains 12 digital .LAS files of borehole digital data

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System requirements
PC with 486 or greater processor, or Mac® with OS® X v. 10.2.2 or later; Adobe® Reader® v. 6.0 or later; video resolution of 1280 x 1024.

Author contact information
Heather Crow   email: hcrow@nrcan.gc.ca
Geological Survey of Canada
186 – 601 Booth Street
Ottawa, ON K1A 0E8

Availability information

This publication is available for free download through GEOSCAN (http://geoscan.ess.nrcan.gc.ca/)