Strontium isotope geochemistry and its geochemical implication from hot spring waters in South Korea

Lee, Seung-Gu; Kim, Tong-Kwon; Lee, Tae Jong

doi:10.1016/j.jvolgeores.2011.09.004

Cited by 26 publications

(11 citation statements)

References 43 publications

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“…Hydrothermal alteration zones along vertical fractures document the existence of significant vertical permeability (Lee et al . ; see also section on reactive fluid flow below).…”

Section: Permeability and Fluid Flow In The Crustmentioning

confidence: 99%

Hydraulic conductivity of fractured upper crust: insights from hydraulic tests in boreholes and fluid‐rock interaction in crystalline basement rocks

Stober

Bucher

2014

Geofluids

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The permeability (j[m 2 ]) of fractured crystalline basement of the upper continental crust is an intrinsic property of a complex system of rocks and fractures that characterizes the flow properties of a representative volume of that system. Permeability decreases with depth. Permeability can be derived from hydraulic well test data in deep boreholes. Only a handful of such deep wells exist on a worldwide basis. Consequently, few data from hydraulically tested wells in crystalline basement are available to the depth of 4-5 km. The permeability of upper crust varies over a very large range depending on the predominant rock type at the studied site and the geological history of the drilled crystalline basement. Hydraulic tests in deep boreholes in the continental crystalline basement revealed permeability (j) values ranging over nine log-units from 10 À21 to 10 À12 m 2 . This large variance also decreases with depth, and at 4 km depth, a characteristic value for the permeability j is 10 À15 m 2 . The permeability varies with time due to deformation-related changes of fracture aperture and fracture geometry and as a result of chemical reaction of flowing fluids with the solids exposed along the fractures. Dissolution and precipitation of minerals contribute to the variation of the permeability with time. The time dependence of j is difficult to measure directly, and it has not been observed in hydraulic well tests. At depths below the deepest wells down to the brittle ductile transition zone, evidence of permeability variation with time can be found in surface exposures of rocks originally from this depth. Exposed hydrothermal reaction veins are very common in continental crustal rocks and witness fossil permeability and its variation with time. The transient evolution of permeability can be predicted from models using fictive and simple starting conditions. However, a geologically meaningful quantitative description of permeability variation with time in the deeper parts of the brittle continental crust resulting from combined fracturing and chemical reaction appears very difficult.

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“…Hydrothermal alteration zones along vertical fractures document the existence of significant vertical permeability (Lee et al . ; see also section on reactive fluid flow below).…”

Section: Permeability and Fluid Flow In The Crustmentioning

confidence: 99%

Hydraulic conductivity of fractured upper crust: insights from hydraulic tests in boreholes and fluid‐rock interaction in crystalline basement rocks

Stober

Bucher

2014

Geofluids

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“…The chemical characteristics of natural fluids such as hot‐spring water and groundwater are the consequence of interactions between fluids and solids on the surface and within the crust of the Earth (Shevenell and Goff , Lee et al . ). Thus, element abundances in these fluids provide physiochemical characteristics of an aqueous system and can indicate the origin and evolution of these fluids.…”

mentioning

confidence: 97%

Determination of Abundances of Fifty‐Two Elements in Natural Waters by ICP‐MS with Freeze‐Drying Pre‐concentration

Hoang

Kunihiro

Sakaguchi

et al. 2018

Geostandard Geoanalytic Res

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To precisely determine the abundances of fifty-two elements found within natural water samples, with mass fractions down to fg g -1 level, we have developed a method which combines freeze-drying pre-concentration (FDC) and isotope dilution internal standardisation (ID-IS). By sublimation of H 2 O, the sample solution was reduced to < 1/50 of the original volume.To determine element abundance with accuracy better than 10%, we found that for solutions being analysed by mass spectrometry the HNO 3 concentration should be > 0.3 mol l -1 to avoid hydrolysis. Matrix-affected signal suppression was not significant for the solutions with NaCl concentrations lower than 0.2 and 0.1 cg g -1 for quadrupole ICP-MS and sector field ICP-MS, respectively. The recovery yields of elements after FDC were 97-105%. The detection limits for the sample solutions prepared by FDC were ≤ 10 pg g -1 , except for Na, K and Ca. Blanks prepared using FDC were at pg-levels, except for eleven elements (Na, Mg, Al, P, Ca, Mn, Fe, Co, Ni, Cu and Zn). The abundances of fifty-two elements in bottled drinking water were determined from five different geological sources with mass fractions ranging from the fg g -1 to lg g -1 level with high accuracy.

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“…1 -tholeiitic group; 2-calc-alkaline and trondhjemitic group; 3 -high-potassic calc-alkaline group; 4 -sub-alkaline monzonitic group; 5 -alkaline and peralkaline group; 6 -anatectic two mica leucogranites. R1 = 4Si -11(Na+K) -2(Fe+Ti) R2 = 6Ca + 2Mg + Al 2003; Lee et al, 2005) 덕구온천수와 우백질 화강암의 Sr 동위원소비 비교 Lee et al (2008Lee et al ( , 2011 …”

Section: 토 의mentioning

confidence: 99%

Rare Earth Element, Sm-Nd and Rb-Sr Age and its Geochemical Implication of Leucogranite in the Deokgu Hot Spring Area, Yeongnam Massif, Korea

Lee¹,

Kim²,

Lee³

2011

The Journal of the Petrological Society of Korea

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Strontium isotope geochemistry and its geochemical implication from hot spring waters in South Korea

Cited by 26 publications

References 43 publications

Hydraulic conductivity of fractured upper crust: insights from hydraulic tests in boreholes and fluid‐rock interaction in crystalline basement rocks

Hydraulic conductivity of fractured upper crust: insights from hydraulic tests in boreholes and fluid‐rock interaction in crystalline basement rocks

Determination of Abundances of Fifty‐Two Elements in Natural Waters by ICP‐MS with Freeze‐Drying Pre‐concentration

Rare Earth Element, Sm-Nd and Rb-Sr Age and its Geochemical Implication of Leucogranite in the Deokgu Hot Spring Area, Yeongnam Massif, Korea

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