Groundwater 87Sr/86Sr values in the Eye-Dashwa Lakes pluton, Canada: Evidence for plagioclase-water reaction

Franklyn, Michael T.; McNutt, Robert H.; Kamineni, D. C.; Gascoyne, M.; Frape, Shaun K.

doi:10.1016/0168-9622(91)90057-4

Cited by 46 publications

(21 citation statements)

References 16 publications

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“…Superior 4-1050 Ca-Cl, Ca-SO 4 , Ca-Cl-SO 4 , Ca-HCO 3 , Ca-Na-HCO 3 , Na-HCO 3 , Mg-HCO 3 , CaMg-HCO 3 , Ca-Na-Mg-HCO 3 , Ca-Na-Cl, Ca-Na-SO 4 -HCO 3 -Cl, Ca-Na-HCO 3 -Cl 0.03-40 Dicken et al (1984), Gascoyne et al (1987), Franklyn (1987), Franklyn et al (1991) and Stotler et al (2010a) Elliot Lake (Panel, Stanleigh, Dennison)…”

Section: Granodioritegranitic Plutonmentioning

confidence: 96%

The interglacial–glacial cycle and geochemical evolution of Canadian and Fennoscandian Shield groundwaters

Stotler

Frape

Ruskeeniemi

et al. 2012

Geochimica et Cosmochimica Acta

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Section: Granodioritegranitic Plutonmentioning

confidence: 96%

The interglacial–glacial cycle and geochemical evolution of Canadian and Fennoscandian Shield groundwaters

Stotler

Frape

Ruskeeniemi

et al. 2012

Geochimica et Cosmochimica Acta

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“…Simon Sandstone, Argenta Formation, or igneous basement. This disequilibrium between brine 87 Sr/ 86 Sr ratios and host rock 87 Sr/ 86 Sr ratios has been noted in previous studies (McNutt et al, , 1987(McNutt et al, , 1990Franklyn et al, 1991) Stueber and Walter (1994); Silurian and Devonian data from Walter (1991, 1994); Mississippian and Pennsylvanian data from Stueber et al (1993) and Stueber and Walter (1994) more soluble mineral phases, such as fracture mineralization, may be controlling the brine 87 Sr/ 86 Sr values. For the Mt.…”

Section: Brine 87 Sr/ 86 Sr Isotopes and Sr Concentrationmentioning

confidence: 62%

Isotopic and geochemical characterization of fossil brines of the Cambrian Mt. Simon Sandstone and Ironton–Galesville Formation from the Illinois Basin, USA

Labotka

Panno

Locke

et al. 2015

Geochimica et Cosmochimica Acta

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Geochemical and isotopic characteristics of deep-seated saline groundwater provide valuable insight into the origin and evolving composition, water-rock interaction, and mixing potential of fossil brines. Such information may yield insight into intra-and interbasinal brine movement and relationships between brine evolution and regional groundwater flow systems. This investigation reports on the d 18 O and dD composition and activity values, 87 Sr/ 86 Sr ratios and Sr concentrations, and major ion concentrations of the Cambrian-hosted brines of the Mt. Simon Sandstone and Ironton-Galesville Formation and discusses the evolution of these brines as they relate to other intracontinental brines. Brines in the Illinois Basin are dominated by Na-Ca-Cl-type chemistry. The Mt. Simon and overlying Ironton-Galesville brines exhibit total dissolved solids concentrations of $195,000 mg/L and $66,270 mg/L, respectively. The dD of brine composition of the Mt. Simon ranges from À34& to À22& (V-SMOW), and the Ironton-Galesville is $À53.2& (V-SMOW). The d 18 O composition of the Mt. Simon brine ranges from À5.0& to À2.8& (V-SMOW), and the Ironton-Galesville brine is $À6.9& (V-SMOW). The 87 Sr/ 86 Sr values in the Mt. Simon brine range from 0.7110 to 0.7116. The less radiogenic Ironton-Galesville brine has an average 87 Sr/ 86 Sr value of 0.7107. Evaluation of d 18 O and dD composition and activities and 87 Sr/ 86 Sr ratios suggests that the Mt. Simon brine is likely connate seawater and recirculating deep-seated brines that have been diluted with meteoric water and influenced by the dissolution of evaporites with a minimal halite contribution based on Cl/Br ratios. The IrontonGalesville brine is also likely originally connate seawater that mixed with other brines and meteoric waters, including possibly Pleistocene glacial recharge. The Ca-excess vs. Na-deficiency comparison with the Basinal Fluid Line suggests the Mt. Simon and Ironton-Galesville brines have been influenced by the effects of albitization and plot very close to the Basinal Fluid Line. These Cambrian-hosted brines appear to have a different albitization history than other regional basin brines and a strong component of seawater. The Ironton-Galesville brine appears more geochemically associated with other Illinois Basin brines than the Mt. Simon brine which appears more geochemically conservative. Comparisons with other extrabasinal North American brines suggest that the Michigan basin brines are geochemically most similar to the Mt. Simon brines with the exception of the influence from carbonates in the Michigan Basin. Analyses of 87 Sr/ 86 Sr values in the Mt. Simon brine suggest that brine Sr has isotopically equilibrated with clay minerals in the Lower Mt. Simon and underlying bedrock formations and not with whole rock suggesting the influence of recirculating brines from the crystalline basement. Overall, the geochemistry of these Cambrian-hosted brines suggests an evolution from original seawater-like compositions. This investigation shows that intracratonic b...

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“…Prolonged water-rock interactions with Rb-rich and Sr-depleted silicates in relatively closed pockets, isolated from each other, as suggested by McNutt et al (1987) and Négrel and Casanova (2005) for the Precambrian Shield brines, is a more plausible explanation of the radiogenic 87 Sr/ 86 Sr ratios measured in the Bécancour brines. The Sr isotopic composition of whole rocks and minerals measured by McNutt et al (1987) and Franklyn et al (1991) suggests interactions with plagioclase or K-feldspars, the latter contained in the Cambrian arkose of the Potsdam Group ( 87 Sr/ 86 Sr up to 0.7330; McNutt et al, 1987).…”

Section: Major Ions and Sr Isotopes Of Sampled Brinesmentioning

confidence: 98%

Fossil brines preserved in the St-Lawrence Lowlands, Québec, Canada as revealed by their chemistry and noble gas isotopes

Pinti

Béland-Otis

Tremblay

et al. 2011

Geochimica et Cosmochimica Acta

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Groundwater 87Sr/86Sr values in the Eye-Dashwa Lakes pluton, Canada: Evidence for plagioclase-water reaction

Cited by 46 publications

References 16 publications

The interglacial–glacial cycle and geochemical evolution of Canadian and Fennoscandian Shield groundwaters

The interglacial–glacial cycle and geochemical evolution of Canadian and Fennoscandian Shield groundwaters

Isotopic and geochemical characterization of fossil brines of the Cambrian Mt. Simon Sandstone and Ironton–Galesville Formation from the Illinois Basin, USA

Fossil brines preserved in the St-Lawrence Lowlands, Québec, Canada as revealed by their chemistry and noble gas isotopes

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