87Sr/86Sr-Verhältnisse als Tracer für geochemische Prozesse in einem Lockergesteinsaquifer (Liebenau, NW-Deutschland)

Wiegand, Bettina; Dietzel, Martin; Bielert, Ulrich; Groth, Peter K. H.; Hansen, Bent

doi:10.1002/1521-401x(200109)29:2/3<139::aid-aheh139>3.0.co;2-z

Cited by 10 publications

(5 citation statements)

References 11 publications

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“…Fig. 4 for references; additional references include Vengosh et al, 1999;Hogan et al, 2000;Vilomet et al, 2001;Frost et al, 2002;Wiegand et al, 2002;Gosselin et al, 2004;Frost and Toner, 2004;Vengosh et al, 2005;Jacobson and Wasserburg, 2005;Helstrup, 2006;Vengosh et al, 2007;Klaus et al, 2007;Cartwright et al, 2007;Sultan et al, 2008;Möller et al, 2008;Shand et al, 2009;Raiber et al, 2009;Gilli et al, 2009. b Negative numbers indicate Sr sources with isotope ratios that are less radiogenic than seawater, whereas positive numbers indicate sources that are more radiogenic than seawater. This column illustrates how much aquifers of each lithology contribute to the model-estimated global flux.…”

Section: Acknowledgements 665mentioning

confidence: 99%

Dissolved strontium in the subterranean estuary – Implications for the marine strontium isotope budget

Beck¹,

Charette²,

Cochran³

et al. 2013

Geochimica et Cosmochimica Acta

100

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15Submarine groundwater discharge (SGD) to the ocean supplies Sr with less radiogenic 87 Sr/ 86 Sr than seawater, and thus constitutes an important term in the Sr isotope budget in the modern ocean. However, few data exist for Sr in coastal groundwater or in the geochemically dynamic subterranean estuary (STE). We examined Sr concentrations and isotope ratios from nine globally-distributed coastal sites and characterized the behavior of Sr in the STE. Dissolved Sr 20 generally mixed conservatively in the STE, although large differences were observed in the meteoric groundwater end-member Sr concentrations among sites (0.1 -24 µM Sr). Strontium isotope exchange was observed in the STE at five of the sites studied, and invariably favored the meteoric groundwater end-member signature. Most of the observed isotope exchange occurred in the salinity range 5-15, and reached up to 40% exchange at salinity 10.

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Section: Acknowledgements 665mentioning

confidence: 99%

Dissolved strontium in the subterranean estuary – Implications for the marine strontium isotope budget

Beck¹,

Charette²,

Cochran³

et al. 2013

Geochimica et Cosmochimica Acta

100

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“…After drying the samples, they were dissolved in 2.5 N HCl, and Sr was extracted by columnar elution using 5 ml quartz-glass columns filled with the cation resin Bio-Rad AG 50 W-X8, 200-400 mesh (Wiegand et al 2001). The collected eluate was dried and finally dissolved in 1 ll of 0.25 N H 3 PO 4 and loaded on Re-double filaments.…”

Section: Sampling and Analytical Proceduresmentioning

confidence: 99%

Salinization of groundwater in the North German Basin: results from conjoint investigation of major, trace element and multi-isotope distribution

Möller

Weise

Tesmer

et al. 2007

Int J Earth Sci (Geol Rundsch)

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Conjoint consideration of distribution of major, rare earth elements (REE) and Y (combined to REY) and of H, O, C, S, Sr isotopes reveals that four types of groundwater are distinguishable by their chemical composition presented by spider patterns. REY patterns indicate thermosaline deep water and two types of shallow saline groundwaters. Presence of connate waters is not detectable. Sr isotope ratios distinguish three sources of Sr: fast and slow weathering of biotite and K-feldspar in Pleistocene sediments, respectively, and dissolution of limestones. d 13 C(DIC) indicate dissolution of limestone under closed and open system conditions. Numerous samples show d 13 C(DIC) > 13& which is probably caused by incongruent dissolution of calcite and dolomite. The brines from below 1,000 m represent mixtures of pre-Pleistocene seawater or its evaporation brines and infiltrated post-Pleistocene precipitation. The shallow waters represent mixtures of Pleistocene and Recent precipitation salinized by dissolution of evaporites or by mixing with ascending brines. The distribution of water types is independent on geologic units and lithologies. Even the Tertiary Rupelian aquiclude does not prevent salinization of the upper aquifer.

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“…Prior to digestion, samples were mixed with a tracer solution enriched in 87 Rb- 84 Sr. Detailed descriptions of the analytical procedure for salt samples is given in [33] and [34]. Throughout this work, a value of 0.710267 ± 0.000041 (2σ) for the NBS 987 (n = 10) was observed.…”

Section: Sample Locations and Analytical Methodsmentioning

confidence: 82%

Isotope Dating of the Potash and Rock Salt Deposit at Bamnet Narong, NE-Thailand

Hansen¹,

Wemmer²,

Eckhardt³

et al. 2016

OJG

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Bamnet Narong is located in northeastern Thailand (Chaiyaphum Province). It is the largest salt mine in the country and has been mined for decades. The landscape in this part of Thailand is characterised by a low plateau, which is called the Khorat Plateau. The plateau is divided into two basins by the Phu Phan Range, the Sakhon Nakhon Basin in the north and the Khorat Basin in the south. The analysed potashes and rock salts are deposited in the Maha Sarakham Formation, which represents the salt-bearing strata of the Khorat Basin. The stratigraphic age of this deposit has been debated since the late 1960's. The assigned ages range from Mid-Cretaceous to Late Cretaceous and up to the Eocene. In this study different isotopic dating systems (Rb-Sr, Sr-Sr, K-Ar and K-Ca) were applied. The stratigraphic age for the time of deposition was confirmed to be Mid Cretaceous (Cenomanian). Furthermore, the homogeneity of the carnallites was investigated in order to trace a possible redistribution of rubidium.

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87Sr/86Sr-Verhältnisse als Tracer für geochemische Prozesse in einem Lockergesteinsaquifer (Liebenau, NW-Deutschland)

Cited by 10 publications

References 11 publications

Dissolved strontium in the subterranean estuary – Implications for the marine strontium isotope budget

Dissolved strontium in the subterranean estuary – Implications for the marine strontium isotope budget

Salinization of groundwater in the North German Basin: results from conjoint investigation of major, trace element and multi-isotope distribution

Isotope Dating of the Potash and Rock Salt Deposit at Bamnet Narong, NE-Thailand

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