Mixing and temporal variation in the groundwater flow system at the Con Mine, Yellowknife, Northwest Territories, Canada: An analogue for a radioactive waste repository.
The spatial and temporal variations in geochemistry and isotopes of groundwaters at the Con Mine in Yellowknife, N.W.T., Canada, have provided insights to the impact of mining on the local hydrogeological environment. The study explores the use of mine hydrology in an analogous setting to assess the...
Main Author: | |
---|---|
Other Authors: | |
Format: | Thesis |
Language: | unknown |
Published: |
University of Ottawa (Canada)
1997
|
Subjects: | |
Online Access: | http://hdl.handle.net/10393/9802 https://doi.org/10.20381/ruor-7975 |
id |
ftunivottawa:oai:ruor.uottawa.ca:10393/9802 |
---|---|
record_format |
openpolar |
spelling |
ftunivottawa:oai:ruor.uottawa.ca:10393/9802 2023-05-15T17:46:43+02:00 Mixing and temporal variation in the groundwater flow system at the Con Mine, Yellowknife, Northwest Territories, Canada: An analogue for a radioactive waste repository. Douglas, Malcolm Charles. Clark, Ian D. 1997 140 p. application/pdf http://hdl.handle.net/10393/9802 https://doi.org/10.20381/ruor-7975 unknown University of Ottawa (Canada) Source: Masters Abstracts International, Volume: 36-04, page: 1038. 9780612263178 http://hdl.handle.net/10393/9802 http://dx.doi.org/10.20381/ruor-7975 Geology Thesis 1997 ftunivottawa https://doi.org/10.20381/ruor-7975 2021-01-04T17:05:38Z The spatial and temporal variations in geochemistry and isotopes of groundwaters at the Con Mine in Yellowknife, N.W.T., Canada, have provided insights to the impact of mining on the local hydrogeological environment. The study explores the use of mine hydrology in an analogous setting to assess the impact of a radioactive waste repository on groundwater flow, and surface to depth pathways in the Canadian Shield. The 50 years of mining activity at the Con mine fit the time frame envisaged for the construction and operation of a repository. Inflow at eighteen boreholes and three faults was periodically monitored from 1994 to 1996. Groundwater discharge in the mine is a mixture of fresh water to brine, with maximum TDS of 290 g/L, at depths of 701 m to 1,615 m below surface. Three end-members are identified: (1) Shield brine typical of deep crystalline environments, (2) early Holocene precipitation and glacial melt water, and (3) recently recharged meteoric water. A body of glacial water emplaced at the time of deglaciation, has remained stable under the low hydraulic gradients in deep groundwater flow in the low-relief setting of the shield terrain, until disturbed by the steep surface to depth gradients imposed by mining activities. (Abstract shortened by UMI.) Thesis Northwest Territories Yellowknife uO Research (University of Ottawa - uOttawa) Canada Northwest Territories Yellowknife |
institution |
Open Polar |
collection |
uO Research (University of Ottawa - uOttawa) |
op_collection_id |
ftunivottawa |
language |
unknown |
topic |
Geology |
spellingShingle |
Geology Douglas, Malcolm Charles. Mixing and temporal variation in the groundwater flow system at the Con Mine, Yellowknife, Northwest Territories, Canada: An analogue for a radioactive waste repository. |
topic_facet |
Geology |
description |
The spatial and temporal variations in geochemistry and isotopes of groundwaters at the Con Mine in Yellowknife, N.W.T., Canada, have provided insights to the impact of mining on the local hydrogeological environment. The study explores the use of mine hydrology in an analogous setting to assess the impact of a radioactive waste repository on groundwater flow, and surface to depth pathways in the Canadian Shield. The 50 years of mining activity at the Con mine fit the time frame envisaged for the construction and operation of a repository. Inflow at eighteen boreholes and three faults was periodically monitored from 1994 to 1996. Groundwater discharge in the mine is a mixture of fresh water to brine, with maximum TDS of 290 g/L, at depths of 701 m to 1,615 m below surface. Three end-members are identified: (1) Shield brine typical of deep crystalline environments, (2) early Holocene precipitation and glacial melt water, and (3) recently recharged meteoric water. A body of glacial water emplaced at the time of deglaciation, has remained stable under the low hydraulic gradients in deep groundwater flow in the low-relief setting of the shield terrain, until disturbed by the steep surface to depth gradients imposed by mining activities. (Abstract shortened by UMI.) |
author2 |
Clark, Ian D. |
format |
Thesis |
author |
Douglas, Malcolm Charles. |
author_facet |
Douglas, Malcolm Charles. |
author_sort |
Douglas, Malcolm Charles. |
title |
Mixing and temporal variation in the groundwater flow system at the Con Mine, Yellowknife, Northwest Territories, Canada: An analogue for a radioactive waste repository. |
title_short |
Mixing and temporal variation in the groundwater flow system at the Con Mine, Yellowknife, Northwest Territories, Canada: An analogue for a radioactive waste repository. |
title_full |
Mixing and temporal variation in the groundwater flow system at the Con Mine, Yellowknife, Northwest Territories, Canada: An analogue for a radioactive waste repository. |
title_fullStr |
Mixing and temporal variation in the groundwater flow system at the Con Mine, Yellowknife, Northwest Territories, Canada: An analogue for a radioactive waste repository. |
title_full_unstemmed |
Mixing and temporal variation in the groundwater flow system at the Con Mine, Yellowknife, Northwest Territories, Canada: An analogue for a radioactive waste repository. |
title_sort |
mixing and temporal variation in the groundwater flow system at the con mine, yellowknife, northwest territories, canada: an analogue for a radioactive waste repository. |
publisher |
University of Ottawa (Canada) |
publishDate |
1997 |
url |
http://hdl.handle.net/10393/9802 https://doi.org/10.20381/ruor-7975 |
geographic |
Canada Northwest Territories Yellowknife |
geographic_facet |
Canada Northwest Territories Yellowknife |
genre |
Northwest Territories Yellowknife |
genre_facet |
Northwest Territories Yellowknife |
op_relation |
Source: Masters Abstracts International, Volume: 36-04, page: 1038. 9780612263178 http://hdl.handle.net/10393/9802 http://dx.doi.org/10.20381/ruor-7975 |
op_doi |
https://doi.org/10.20381/ruor-7975 |
_version_ |
1766150521626820608 |