A geophysical investigation of a sulfate dominated hypersaline lake system in British Columbia, Canada

2021 ◽  
Author(s):  
Mitchell Barklage ◽  
Bailey Fluegel
Keyword(s):  
British Columbia ◽  
Hypersaline Lake ◽  
Geophysical Investigation ◽  
Lake System

Multi-technique Geophysical Investigation of a Very Slow-moving Landslide near Ashcroft, British Columbia, Canada

2019 ◽  
Vol 24 (1) ◽  
pp. 87-110 ◽  
Author(s):  
David Huntley ◽  
Peter Bobrowsky ◽  
Michael Hendry ◽  
Renato Macciotta ◽  
Melvyn Best
Keyword(s):  
British Columbia ◽  
Retaining Wall ◽  
Geophysical Methods ◽  
Main Body ◽  
Terrain Mapping ◽  
Geophysical Investigation ◽  
Wave Refraction ◽  
Natural Gamma ◽  
Geophysical Surveys ◽  
Slow Moving

Landslides in the Thompson River valley, British Columbia have the potential to adversely impact vital national railway infrastructure and operations, the natural environment, cultural heritage features, communities, public safety and the economy. To better manage geohazard risks in the primary national transportation corridor, government agencies, universities and railway industry partners are focusing research efforts on the Ripley Landslide, 7 km south of Ashcroft. The internal composition and structure of this very slow-moving landslide as revealed by geophysical surveys and terrain mapping provides contextual baseline data for interpreting slope stability monitoring results and guiding geohazard mitigation efforts. Terrestrial and waterborne geophysical surveys were undertaken using subsets of the following methods: electrical resistivity tomography, frequency electromagnetic conductivity, ground penetrating radar, primary-wave refraction and multispectral analysis of shear-waves, natural gamma radiation, induction conductivity and magnetic susceptibility. Small and irregular anomalies, areas of complex subsurface geometry and groundwater-rich zones are resolved along all terrestrial geophysical survey lines. Terrain mapping and geophysical surveys indicate a high relief bedrock sub-surface overlain by a 10 m to >30 m thick package of complex fine-grained sediments containing groundwater. Planar sub-surface features revealed in surface exposures, borehole logs and geophysical profiles include tabular bedding and terrain unit contacts. Profiles also show discrete curvilinear features interpreted as rotational-translational failure planes in clay-rich beds in the main body of the slide beneath the rail ballast and retaining wall. Integrating data from surficial geology mapping and an array of geophysical methods provided significantly more information than any one technique on its own.

Interpreting lacustrine bulk sediment δ15N values using metagenomics in a tropical hypersaline lake system

2020 ◽  
Author(s):  
Mingfei Chen ◽  
Jessica L. Conroy ◽  
Robert A. Sanford ◽  
Joanne C. Chee-Sanford ◽  
Lynn M. Connor
Keyword(s):  
Hypersaline Lake ◽  
Bulk Sediment ◽  
Lake System

Addition of Nutrients to a Lake Leads to Greatly Increased Catch of Salmon

1979 ◽  
Vol 6 (3) ◽  
pp. 187-190 ◽  
Author(s):  
Robin J. LeBrasseur ◽  
Carey D. McAllister ◽  
Timothy R. Parsons
Keyword(s):  
British Columbia ◽  
Drinking Water ◽  
Hydroelectric Power ◽  
Recreational Activities ◽  
Lake System

The Great Central Lake story from British Columbia provides an interesting microcosm which touches on a variety of Man's activities. Other aspects which have not been discussed but were touched upon during the course of the experiment include logging, mining, hydroelectric power, recreational activities, and drinking-water. These ‘resources’ are also part of Man's use of the Great Central Lake system.

scholarly journals Distribution of glycerol dialkyl glycerol tetraether (GDGT) lipids in a hypersaline lake system

2016 ◽  
Vol 99 ◽  
pp. 113-124 ◽  
Author(s):  
Jingjing Li ◽  
Richard D. Pancost ◽  
B. David A. Naafs ◽  
Huan Yang ◽  
Cheng Zhao ◽  
...  
Keyword(s):  
Hypersaline Lake ◽  
Lake System

scholarly journals Stromatolites from the Aptian Crato Formation, a hypersaline lake system in the Araripe Basin, northeastern Brazil

Facies ◽  
2016 ◽  
Vol 63 (1) ◽  
Author(s):  
Lucas Veríssimo Warren ◽  
Filipe Giovanini Varejão ◽  
Fernanda Quaglio ◽  
Marcello Guimarães Simões ◽  
Franz Theodor Fürsich ◽  
...  
Keyword(s):  
Northeastern Brazil ◽  
Hypersaline Lake ◽  
Lake System

Glacial Lake Camelsfoot: a Late Wisconsinan advance stage proglacial lake in the Fraser River valley, Gang Ranch area, British Columbia

1994 ◽  
Vol 31 (5) ◽  
pp. 798-807 ◽  
Author(s):  
David H. Huntley ◽  
Bruce E. Broster
Keyword(s):  
British Columbia ◽  
Glacial Lake ◽  
Fraser River ◽  
Ice Flow ◽  
Lake System ◽  
Reference Sections ◽  
Lithostratigraphic Units ◽  
Proglacial Lake ◽  
Late Wisconsinan ◽  
Cordilleran Ice Sheet

In the Gang Ranch area, British Columbia, interaction between the regional physiography and ice flow during the Late Wisconsinan Fraser Glaciation resulted in the formation of a proglacial lake confined to valleys of the Fraser River and its tributaries. Lithostratigraphic and geomorphic evidence suggests that ponding was initiated in the Big Bar Creek area where the Fraser River is confined to a deep canyon in the Camelsfoot Range. During ice advance, a proglacial lake system developed that progressively deepened and reached a minimum upper elevation of approximately 710 m asl prior to being overridden by ice. We propose that this system be formally named "Glacial Lake Camelsfoot." A composite stratotype, comprising lithostratigraphic units associated with Glacial Lake Camelsfoot, is described from eight reference sections along Fraser River, Churn, and Lone Cabin creeks in the Gang Ranch area. Additional geomorphic evidence indicates that at the Fraser Glaciation maximum, the Cordilleran Ice Sheet in the study area ranged from 600 to 2000 m in thickness.

scholarly journals Corrections to: Interpreting lacustrine bulk sediment δ15N values using metagenomics in a tropical hypersaline lake system

2021 ◽  
Author(s):  
Mingfei Chen ◽  
Jessica L. Conroy ◽  
Robert A. Sanford ◽  
Joanne C. Chee-Sanford ◽  
Lynn M. Connor
Keyword(s):  
Hypersaline Lake ◽  
Bulk Sediment ◽  
Lake System

Lentic Spawning by the Pacific Lamprey, Lampetra tridentata

1987 ◽  
Vol 44 (2) ◽  
pp. 476-478 ◽  
Author(s):  
J. E. Russell ◽  
F. W. H. Beamish ◽  
R. J. Beamish
Keyword(s):  
British Columbia ◽  
Wave Action ◽  
Pacific Lamprey ◽  
Lake System ◽  
Unidirectional Flow ◽  
The Pacific ◽  
Lotic Environments ◽  
Lampetra Tridentata ◽  
Lentic Water

Anadromous Pacific lamprey, Lampetra tridentata, typically construct nests and reproduce in lotic environments. In the summer of 1984, Pacific lamprey were observed spawning in shallow lentic water in two regions of the Babine Lake system, British Columbia. Nests were subject to wave action but an obvious unidirectional flow was not observed.

Integrated Geophysical Investigation and 3-D Fault Characterization of the Rochester and Adna 7.5 Minute Quadrangles, Thurston and Lewis Counties, Washington

2019 ◽  
Author(s):  
Todd Lau ◽  
Megan Anderson ◽  
Michael Polenz ◽  
Andrew Sadowski ◽  
Rebeca Becerra ◽  
...  
Keyword(s):  
Geophysical Investigation ◽  
Fault Characterization
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