Strontium in rivers of the Baltic Basin

Löfvendahl, Runo; Åberg, Göran; Hamilton, P. J.

doi:10.1007/bf00879760

Cited by 61 publications

(56 citation statements)

References 26 publications

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“…The Sr content of Baltic Sea samples collected during this study (e.g., 1999, Table 1) to a depth of 200 m nearly coincide with those of previous workers (Andersson et al 1992(Andersson et al , 1994Aberg and Wickman 1987;Löfvendahl et al 1990;Peterman and Wallin 1999), whereas the 87 Sr/ 86 Sr ratios showed several features. Conversely to Sr contents that decrease with decreasing salinity, the 87 Sr/ 86 Sr ratios increase from the open sea towards the lowermost salinities in the Bothnian Bay and the Gulf of Finland.…”

Section: General Features Of the Baltic Seasupporting

confidence: 60%

⁸⁷Sr/⁸⁶Sr of brines from the Fennoscandian Shield: a synthesis of groundwater isotopic data from the Baltic Sea region

Négrel¹,

Casanova²,

Blomqvist³

2005

Can. J. Earth Sci.

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High salinity Ca-Na-Cl brines occur in Sweden and Finland. The complex geological history of the Fennoscandian Shield is reflected by the wide range of saline waters whose chemical compositions have been explained by local water-rock interaction, simple evolution of relict sea water, or freezing of sea water during glacial periods. This study deals with the present knowledge of Sr isotopes in groundwater from the Fennoscandian Shield to better constrain the origin of their deep saline component. Two different mixing trends are seen between Äspö Island groundwater and the Baltic Sea. The first trend links the North Sea to rivers through various dilution levels in the Baltic; the second trend is a simple linear relationship through Äspö groundwaters, agreeing with a binary mixing between a Baltic end-member and a highly Sr-concentrated fluid. Strontium isotope compositions are presented for precipitation in Finland and Sweden, the Baltic Sea, and the river waters draining the Fennoscandian Shield, and for groundwaters from several sites in the Fennoscandian Shield. At least six mixing lines between rain-and-snow input and surface waters can be drawn in each region around the Baltic Sea, reflecting a first step of water-rock interaction. A second series of calculated lines links the surface end-members and the deep brines, and defines a range of 87 Sr/ 86 Sr ratios for the deep brines at each site. All sites show a specific 87 Sr/ 86 Sr signature and the large 87 Sr/ 86 Sr variations is site specific. The well-constrained 87 Sr/ 86 Sr signatures in deep brines should correspond to a large, well-mixed, and homogeneous water reservoir.Resumé : Des saumures fortement concentrées, de type Ca-Na-Cl, existent en Finlande et Suède. L'histoire géologique complexe du bouclier Fennoscandien se traduit par une grande diversité géochimique de ces saumures dont l'origine a été interprétée soit comme le résultat d'interactions eau-roche, soit de l'évolution d'anciennes eaux marines ou bien du gel d'eaux marines au cours des dernières glaciations. Cette étude présente l'état des connaissances des isotopes du strontium dans les eaux souterraines du bouclier Fennoscandien afin de mieux contraindre l'origine de leur composante salée profonde. Deux systèmes de mélange différents sont mis en évidence entre les eaux souterraines d'Äspö et la Baltique. Le premier relie la Mer du Nord aux fleuves; le deuxième correspond à une régression linéaire entre les eaux souterraines d'Äspö, montrant un mélange binaire entre la baltique et un fluide fortement concentré. Une synthèse des isotopes du Sr des pluies en Finlande et en Suède, de la mer Baltique et des rivières drainant le bouclier Fennoscandien, ainsi que des eaux souterraines de plusieurs sites sur ce bouclier est présentée. Au moins 6 droites de mélange entre les pluies et les eaux de surface peuvent être identifiées, reflétant une première étape d'interactions eau-roche. Une seconde série de droites de mélanges calculées relie les eaux de surface avec les saumures profondes. Ces droite...

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Section: General Features Of the Baltic Seasupporting

confidence: 60%

⁸⁷Sr/⁸⁶Sr of brines from the Fennoscandian Shield: a synthesis of groundwater isotopic data from the Baltic Sea region

Négrel¹,

Casanova²,

Blomqvist³

2005

Can. J. Earth Sci.

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“…The Sr concentration weighted values are presumably realistic by the order of magnitude: Åberg (1995) has reported 87 Sr/ 86 Sr values of 0.71-0.8 from lakes, rivers, soil, and trees of Finland and Sweden. The average 87 Sr/ 86 Sr ratio of the strontium in the rivers on the Precambrian shield of Fennoscandia are estimated to be 0.730 (Löfvendahl et al, 1990), which is very close to the Sr concentration weighted average (0.7293) of the estimated values. Sr (estimated) versus 1/Sr mixing plots for samples from the major bedrock units.…”

Section: The Smoothed Isotope Ratio Estimatesupporting

confidence: 54%

Estimating the distribution of strontium isotope ratios (<sup>87</sup>Sr/<sup>86</sup>Sr) in the Precambrian of Finland

Kaislaniemi¹

2011

Bull Geol Soc Finland

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“…of the soil samples, c. 0.714 to 0.0728, defining the local terrestrial baseline. The strontium signature of the water of the river Motala Ström has previously been published by Löfvendahl et al (1990).…”

Section: Strontiummentioning

confidence: 99%

Diet and mobility among Mesolithic hunter-gatherers in Motala (Sweden) - The isotope perspective

Eriksson

Frei

Howcroft

et al. 2018

Journal of Archaeological Science: Reports

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Strontium in rivers of the Baltic Basin

Cited by 61 publications

References 26 publications

⁸⁷Sr/⁸⁶Sr of brines from the Fennoscandian Shield: a synthesis of groundwater isotopic data from the Baltic Sea region

⁸⁷Sr/⁸⁶Sr of brines from the Fennoscandian Shield: a synthesis of groundwater isotopic data from the Baltic Sea region

Estimating the distribution of strontium isotope ratios (<sup>87</sup>Sr/<sup>86</sup>Sr) in the Precambrian of Finland

Diet and mobility among Mesolithic hunter-gatherers in Motala (Sweden) - The isotope perspective

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Strontium in rivers of the Baltic Basin

Cited by 61 publications

References 26 publications

87Sr/86Sr of brines from the Fennoscandian Shield: a synthesis of groundwater isotopic data from the Baltic Sea region

87Sr/86Sr of brines from the Fennoscandian Shield: a synthesis of groundwater isotopic data from the Baltic Sea region

Estimating the distribution of strontium isotope ratios (<sup>87</sup>Sr/<sup>86</sup>Sr) in the Precambrian of Finland

Diet and mobility among Mesolithic hunter-gatherers in Motala (Sweden) - The isotope perspective

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⁸⁷Sr/⁸⁶Sr of brines from the Fennoscandian Shield: a synthesis of groundwater isotopic data from the Baltic Sea region

⁸⁷Sr/⁸⁶Sr of brines from the Fennoscandian Shield: a synthesis of groundwater isotopic data from the Baltic Sea region