Publication information

Geological Survey of Canada
Open File 8252

Downhole geophysical logs in Quaternary sediments of the Niagara Peninsula, southern Ontario

H.L. Crow, L.C. Olson, A.K. Burt, and K.D. Brewer

© Her Majesty the Queen in Right of Canada, as represented by the Minister of Natural Resources, 2017

Permanent link: https://doi.org/10.4095/304203

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

Recommended citation

Crow, H.L., Olson, L.C., Burt, A.K., and Brewer, K.D., 2017. Downhole geophysical logs in Quaternary sediments of the Niagara Peninsula, southern Ontario; Geological Survey of Canada, Open File 8252, 1 .zip file. https://doi.org/10.4095/304203

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Contents

In 2013, the Ontario Geological Survey (OGS) initiated a three-dimensional mapping project in the Niagara Peninsula to model regional-scale Quaternary sediments which form both aquitards and aquifers.  The Geological Survey of Canada (GSC) is collaborating with the OGS in the study area by conducting downhole geophysical logging in 15 PVC-cased sediment boreholes to better understand the in situ geophysical properties of the sediments.  A suite of natural gamma and induction (apparent conductivity and magnetic susceptibility) and velocity (Vp, Vs) logs was acquired to investigate lithological variation within the sediments.  Logs are interpreted alongside OGS particle size analyses from the cores.  High resolution fluid temperature logs were recorded to identify small temperature changes within the borehole fluids, and identify regional groundwater temperature variation.  This Open File report provides preliminary log observations in the context of the regional hydrostratigraphic units.   Figures of the log suites and digital log data are provided in appendices.

Directory structure

of_8252.pdf (includes report and Appendix A)
of_8252_Appendix B – Folder contains digital geophysical logs (LAS format) 
of_8252_readme.rtf

Author contact information

H. Crow (Heather.Crow@canada.ca)
Geological Survey of Canada
186-601 Booth Street
Ottawa, Ontario
K1A 0E8

Availability information

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

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