Geochemical data for 15000 rock samples from Red Lake-Lansdowne House area, northwestern Ontario

1969 ◽  
Author(s):  
R H C Holman
Keyword(s):  
Geochemical Data ◽  
Rock Samples ◽  
Red Lake ◽  
Northwestern Ontario ◽  
House Area

Copper content of Canadian shield rocks, red Lake-lansdowne house area, northwestern Ontario

1966 ◽  
Author(s):  
R F Emslie ◽  
R H C Holman
Keyword(s):  
Copper Content ◽  
Canadian Shield ◽  
Red Lake ◽  
Northwestern Ontario ◽  
House Area

Red Lake-Landsdowne house area, northwestern Ontario

1963 ◽  
Author(s):  
S Duffell ◽  
A S Maclaren ◽  
R H C Holman
Keyword(s):  
Red Lake ◽  
Northwestern Ontario ◽  
House Area

scholarly journals AN ESTIMATE OF THE COMPOSITION OF PART OF THE CANADIAN SHIELD IN NORTHWESTERN ONTARIO

1967 ◽  
Vol 4 (4) ◽  
pp. 725-739 ◽  
Author(s):  
G. A. Reilly ◽  
D. M. Shaw
Keyword(s):  
Trace Elements ◽  
Significant Variation ◽  
Major Element ◽  
Canadian Shield ◽  
Element Analysis ◽  
Red Lake ◽  
Rock Types ◽  
Northwestern Ontario ◽  
House Area ◽  
Composite Samples

An attempt has been made to estimate the abundance of trace and major constituents in the Precambrian surficial rocks of a large part (43 000 square miles) of the Red Lake–Lansdowne House area in northwestern Ontario. One-hundred and two composite samples were made to represent eight rock types in seven adjacent map-areas of equal size. Major element analysis was carried out on eight composite samples representing rock types for the whole area. Analysis of variance techniques have detected significant regional variations of Cr, Mn, Sr, and Ba. Significant variation exists between rock types for all trace elements analyzed except Cu.

Aeromagnetic-Geological Interpretation, Red Lake Landsdowne House area, Ontario

1963 ◽  
Author(s):  
A S Maclaren
Keyword(s):  
Geological Interpretation ◽  
Red Lake ◽  
House Area

Red Lake-Landsdowne House area, Ontario

1963 ◽  
Author(s):  
S Duffell
Keyword(s):  
Red Lake ◽  
House Area

scholarly journals Evaporite Dissolution Rate through an on-site Experiment into Piezometric Tubes Applied to the Real Case-Study of Quinis (NE Italy)

Geosciences ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 298 ◽  
Author(s):  
Chiara Calligaris ◽  
Lisa Ghezzi ◽  
Riccardo Petrini ◽  
Davide Lenaz ◽  
Luca Zini
Keyword(s):  
Field Experiments ◽  
Hydrological Regime ◽  
Climatic Conditions ◽  
Water Level Fluctuations ◽  
Geochemical Data ◽  
Data Logger ◽  
Water Geochemistry ◽  
Rock Samples ◽  
Ne Italy ◽  
Different Depths

The present paper deals with a field experiments on evaporite rock samples and groundwater investigations in the Quinis test site, a hamlet of the Enemonzo municipality in NE Italy, were sinkholes occurred in the past and are still occurring causing severe damage to the existing infrastructures. The area is characterised by a Carnian evaporitic bedrock made of gypsum and anhydrite mantled by alluvial and colluvial deposits. In order to evaluate the loss of weight and volume of the subcropping evaporites as responsible for sinkholes, a field-experiment was carried out. Inside seven piezometers, at different depths, evaporitic rock samples were exposed to the naturally occurring variable climatic conditions such as degree of humidity, different air flow and hydrodynamic. The rock samples were installed at the beginning of April 2017 in the dry sections of piezometric tubes, in the vadose zone and in the phreatic zone. Data related to water level fluctuations were recorded by using data-logger devices and highlight significant changes in the water table. After 13 months of data recording (May 2018), rock samples were removed, reweighted and the volume loss measured. In addition, water from piezometer-experiment, representative of the groundwater circulation, were collected at different depths. The obtained results indicate that rock sample reduction is dependent on the hydrological regime and water chemistry and not on the number of days during which the samples remained submersed. In particular, the water geochemistry highlights the possible role in gypsum/anhydrite dissolution due to NaCl water admixing in a complex scenario. In additional, the geochemical data highlight the occurrence of some potentially toxic elements (As, Fe, Mn) at concentrations of concern in some water. This approach represents a novel contribution in the study of karst hazard in evaporites adding a tile to the knowledge of the fast evolutionary processes which cause sinkhole formation.

scholarly journals The Influence of Karst Aquifer Mineralogy and Geochemistry on Groundwater Characteristics: West Bank, Palestine

Water ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 1829 ◽  
Author(s):  
Hassan Jebreen ◽  
Andre Banning ◽  
Stefan Wohnlich ◽  
Andrea Niedermayr ◽  
Marwan Ghanem ◽  
...  
Keyword(s):  
Trace Elements ◽  
Alkaline Earth ◽  
West Bank ◽  
Karst Aquifer ◽  
Hierarchical Cluster ◽  
Geochemical Data ◽  
Rock Samples ◽  
Study Approach ◽  
Alkaline Earth Elements ◽  
Groundwater Samples

This work reports, for the first time, the mineralogical and geochemical characteristics of karst aquifers in the Central West Bank (CWB) catchment in Palestine. It provides an integrated study approach by correlating the geochemistry of the lithology and hydrochemical data of groundwater samples. Mineralogical analysis showed that all of the samples were dominantly composed of either calcite CaCO3 (5–100 wt. %) or dolomite CaMg(CO3)2 (4–100 wt. %), with minor amounts of quartz and feldspar, which is supported by the inorganic carbon content (9–13 wt. %) and hydrochemical composition of the spring water samples. The whole-rock geochemical data indicated that the samples have low contents of trace elements and transition metals. In contrast, the concentrations of alkaline earth elements (Mg, Ca, Sr, Ba) and Mn were high in the rock and groundwater samples. Generally, the trace elements of rock samples with concentrations >10 ppm included Sr (17–330 ppm), Mn (17–367 ppm), Ba (2–32 ppm), W (5–37 ppm), Cr (3–23 ppm), Zn (1.7–28 ppm), V (4–23 ppm), and Zr (1–22 ppm), while the concentrations of all the other trace elements was below 10 ppm. Ionic ratios and hierarchical cluster analysis (HCA) suggested that the chemical evolution of groundwater was mainly related to the geogenic (rock–water) interaction in the study area. This is clear in the alkaline earth elements (Mg, Ca, Sr, Ba) ratios, especially regarding the Sr values. The calcite rock samples had higher Sr (mean 160 ppm, n = 11) than those of the dolomite rocks (mean 76 ppm, n = 9).

A detailed gravity profile across the English River Subprovince, northwestern Ontario

1984 ◽  
Vol 21 (2) ◽  
pp. 145-151 ◽  
Author(s):  
V. K. Gupta ◽  
R. B. Barlow
Keyword(s):  
Seismic Data ◽  
Bouguer Anomaly ◽  
Density Data ◽  
Density Measurements ◽  
Anomaly Field ◽  
Red Lake ◽  
Northwestern Ontario ◽  
Crustal Model ◽  
Regional Gravity ◽  
Gravity Profile

This paper presents the results of a detailed gravity profile measured across the two lithotectonic domains of the English River Subprovince from Vermilion Bay to Red Lake, a distance of 190 km, in northwestern Ontario. Along the profile 283 fresh rock samples were collected for density measurements. The density data clearly suggest that there is a measurable and significant density difference between the migmatized metasediments and plutonic rocks.A crustal model based on the seismic data, along the profile, has been used for computing a regional gravity field, which in turn has been used in isolating the residual anomalies from the Bouguer anomaly field. A strong correlation has been found to exist between the residual anomalies, the rock densities, and the surface lithologies. The Northern Supracrustal Domain, which is at its widest (60 km) along the profile, is dominated by a pronounced 15 mGal (150 μm s−2) positive residual anomaly believed to be caused by outcropping, anomalously dense metasediments extending to a modelled depth of approximately 10 km. In the Southern Plutonic Domain the residual anomalies along the profile are small (less than 5 mGal (50 μm s−2)) and limited in depth. The Mystery Lake dome extends to a modelled depth of approximately 2.5 km.

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