The oxygen and hydrogen isotope geochemistry of clay minerals

Savin, Samuel M.; Epstein, Samuel

doi:10.1016/0016-7037(70)90149-3

Cited by 512 publications

(267 citation statements)

References 24 publications

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“…In addition, the Longfenku (LFK) is close to the Gueizikeng area, where clay minerals were mined previously. Therefore, the shift of stable isotopic ratio in LFK might be caused by water-clay mineral interaction, and the isotopic fractionation for water-clay mineral system caused the δ 18 O shift greater than the δD shift (Savin and Epstein 1970;Lawrence and Taylor 1972;James and Baker 1976;Criss 1999;Hoefs 2004) (Fig. 5).…”

Section: Origin Of Type I Thermal Watermentioning

confidence: 99%

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Characteristics and Origins of Hot Springs in the Tatun Volcano Group in Northern Taiwan

Liu¹,

Song²,

Chen³

et al. 2011

Terr. Atmos. Ocean. Sci.

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This paper systematically surveyed distribution and field occurrences of 13 hot springs as well as geochemical investigation on the geothermal area of the Tatun Volcano Group (TVG). According to Piper diagrams, pH values, field occurrences and water-rock interactions, these hot springs can be classified into three types: (1) Type I, SO 4 2-acidic water where the reservoir is located in the Wuchishan Formation; (2) Type II, HCO 3 -a near neutral spring where waters originate from the volcanic terrane (andesite); and (3) Type III, Cl --rich acidic water where waters emanate from shallower Wuchishan Formation. In terms of isotopic ratio, δD and δ 18O values, two groups of hot spring can be recognized. One is far away from the meteoric water line of the Tatun area with values ranging between -26.2‰ and -3.5‰, and from -3.2‰ to 1.6‰, respectively. However, another close to the meteoric water line of the Tatun area is between -28.4‰ and -13.6‰, and from -5.5‰ to -4.2‰, respectively. In addition, the δ 34 S value of thermal waters can also be distinguished into two groups, one ranging from 26.1‰ to 28.5‰, and the other between 0.8‰ and 7.8‰. Based on field occurrences and geochemical characteristics, a model has been proposed to illustrate the origin of these hot springs.

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Section: Origin Of Type I Thermal Watermentioning

confidence: 99%

“…Furthermore, the SPT water may react with clay minerals of the Wuchishan Formation lately to shift oxygen isotopic value as shown in Fig. 4 (Savin and Epstein 1970;Lawrence and Taylor 1972;Jame and Baker 1976;Criss 1999;Hoefs 2004). …”

Section: Origin Of Type III Thermal Watermentioning

confidence: 99%

Characteristics and Origins of Hot Springs in the Tatun Volcano Group in Northern Taiwan

Liu¹,

Song²,

Chen³

et al. 2011

Terr. Atmos. Ocean. Sci.

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“…of hydroxyls. Nevertheless, some authors have reported that not all hydration water evolves upon heating at ll0~ For example, Fripiat et al (1960) proved, by infrared spectroscopy, the presence of hydration water after heating at such a temperature, and Savin & Epstein (1970) used temperatures up to 250~ to ensure the loss of all hydration water for their isotopic studies.…”

mentioning

confidence: 99%

Determination of Hydration (H₂O⁻) and Structural (H₂O⁺) Water for Chemical Analysis of Smectites. Application to Los Trancos Smectites, Spain

Caudros

Huertas²,

Delgado³

et al. 1994

Clay miner.

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“…Hydrogen and oxygen isotope ratios of a representa tive nontronite sample and calculated isotope composition of water in equi librium with nontronite. The meteoric water line (Craig, 1961), kaolinite weathering line (Savin and Epstein, 1970) and supergene/hypogene (S/H) line are given for reference.…”

Section: -80mentioning

confidence: 99%

Formation of Nontronite from Oxidative Dissolution of Pyrite Disseminated in Precambrian Felsic Metavolcanics of the Southern Iberian Massif (Spain)

Fernández-Caliani

Crespo-Feo

Rodas

et al. 2004

Clays and clay miner.

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Abstract-This paper describes a rare occurrence of nontronite associated with sulfide-bearing felsic metavolcanics, providing evidence of colloidal deposition in open spaces as result of a low-temperature water-rock interaction. Microbotryoidal masses of green nontronite with impurities of kao linite, illite, barite, amorphous silica and iron oxyhydroxides are found as vein and cavity fillings in deeply kaolinized rhyolites and rhyolitic tuffs of Precambrian age, at Oliva de Merida in SW Spain. Clay mineral characterization has been carried out by X-ray diffraction, infrared spectroscopy, thermal analysis, analytical electron microscopy and stable isotope (oxygen and hydrogen) analysis. Nontronite was formed under low-temperature alteration conditions, from a continuous sequence of reactions and aqueous solution compositions, involving two basic processes that acted in concert: oxidative dissolution of pyrite and hydrolysis of K-feldspar. After acidity neutralization, dissolved silica released by incongruent dissolution of K-feldspar reacted with ferric sulfate derived from pyrite oxidation to form nontronite under oxidizing conditions, in the presence of relatively warm meteoric water.

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The oxygen and hydrogen isotope geochemistry of clay minerals

Cited by 512 publications

References 24 publications

Characteristics and Origins of Hot Springs in the Tatun Volcano Group in Northern Taiwan

Characteristics and Origins of Hot Springs in the Tatun Volcano Group in Northern Taiwan

Determination of Hydration (H₂O⁻) and Structural (H₂O⁺) Water for Chemical Analysis of Smectites. Application to Los Trancos Smectites, Spain

Formation of Nontronite from Oxidative Dissolution of Pyrite Disseminated in Precambrian Felsic Metavolcanics of the Southern Iberian Massif (Spain)

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The oxygen and hydrogen isotope geochemistry of clay minerals

Cited by 512 publications

References 24 publications

Characteristics and Origins of Hot Springs in the Tatun Volcano Group in Northern Taiwan

Characteristics and Origins of Hot Springs in the Tatun Volcano Group in Northern Taiwan

Determination of Hydration (H2O−) and Structural (H2O+) Water for Chemical Analysis of Smectites. Application to Los Trancos Smectites, Spain

Formation of Nontronite from Oxidative Dissolution of Pyrite Disseminated in Precambrian Felsic Metavolcanics of the Southern Iberian Massif (Spain)

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Determination of Hydration (H₂O⁻) and Structural (H₂O⁺) Water for Chemical Analysis of Smectites. Application to Los Trancos Smectites, Spain