Noble Gases in Lakes and Ground Waters

Kipfer, Rolf; Aeschbach–Hertig, Werner; Peeters, Frank; Stute, Marvin

doi:10.2138/rmg.2002.47.14

Cited by 316 publications

(372 citation statements)

References 210 publications

(308 reference statements)

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“…As an additional check on the accuracy of the analytical system, we analyzed air-equilibrated seawater samples taken from a water reservoir in a thermostatically controlled room. The observed data agreed well with values reported in the literature (Kipfer et al 2002) within the experimental error. The helium blank level (the same experimental procedure without the sample) was less than 1% of the level of the samples and the blank 3 He/ 4 He ratio was atmospheric within analytical error, and therefore negligibly affected the calibrated ratios.…”

Section: Experimental Methodssupporting

confidence: 91%

Distribution of helium-3 plumes and deep-sea circulation in the central Indian Ocean

Takahata¹,

Shirai²,

Ohmori³

et al. 2018

Terr. Atmos. Ocean. Sci.

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We report helium isotope data collected in the central Indian Ocean, from the Arabian Sea to the Southern Ocean, during a Japanese GEOTRACES cruise in 2009 -2010. We found hydrothermal helium-3 plumes and confirmed that 3 He/ 4 He ratio anomalies were almost the same as those observed in WOCE cruises conducted in 1990s, which indicates the hydrothermal activity and abyssal currents have not changed largely for the last few decades. Maximum δ 3 He value over 14% was observed at mid-depth (2000 -3000 m) in the northern part (north of 30°S) in the central Indian Ocean, whereas lower δ 3 He was found in the southern part at the same depth, where δ 3 He is defined as the percent deviation of the helium isotopic ratio relative to the atmospheric standard. The vertical distribution of δ 3 He shows a similar trend with dissolved iron and manganese distributions in the hydrothermal plume. Lateral δ 3 He distribution at mid-depth using our GEOTRACES data together with WOCE data suggest that the helium-3 plume in the central Indian Ocean derived from the Central Indian Ridge around 20°S. It does not flow northward along the ridge but flows eastward as previously reported. The source of the helium-3 plume observed in the region adjacent to the Indian subcontinent might be in the Gulf of Aden as inferred from water properties. The δ 3 He distribution could reveal clockwise deepwater circulation in the Arabian Sea.

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Section: Experimental Methodssupporting

confidence: 91%

Distribution of helium-3 plumes and deep-sea circulation in the central Indian Ocean

Takahata¹,

Shirai²,

Ohmori³

et al. 2018

Terr. Atmos. Ocean. Sci.

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“…Groundwater 4 He ages are now routinely used in ancient groundwater studies (e.g. Kipfer et al 2002), while the accumulation of 4 He in natural gases that have equilibrated with the groundwater is well documented (Ballentine & Sherwood Lollar 2002;Zhou & Ballentine 2006). The latter is particularly important when a magmatic gas passes through or contacts an 'old' groundwater.…”

Section: Neon: Evidence From Co 2 -Rich Well Gasesmentioning

confidence: 99%

What CO ₂ well gases tell us about the origin of noble gases in the mantle and their relationship to the atmosphere

Ballentine

Holland²

2008

Phil. Trans. R. Soc. A.

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Study of commercially produced volcanic CO 2 gas associated with the Colorado Plateau, USA, has revealed substantial new information about the noble gas isotopic composition and elemental abundance pattern of the mantle. Combined with published data from midocean ridge basalts, it is now clear that the convecting mantle has a maximum 20 Ne/ 22 Ne isotopic composition, indistinguishable from that attributed to solar wind-implanted (SWI) neon in meteorites. This is distinct from the higher 20 Ne/ 22 Ne isotopic value expected for solar nebula gases. The non-radiogenic xenon isotopic composition of the well gases shows that 20 per cent of the mantle Xe is 'solar-like' in origin, but cannot resolve the small isotopic difference between the trapped meteorite 'Q'-component and solar Xe. The mantle primordial 20 Ne/ 132 Xe is approximately 1400 and is comparable with the upper end of that observed in meteorites. Previous work using the terrestrial 129 I-129 Xe mass balance demands that almost 99 per cent of the Xe (and therefore other noble gases) has been lost from the accreting solids and that Pu-I closure age models have shown this to have occurred in the first ca 100 Ma of the Earth's history. The highest concentrations of Q-Xe and solar wind-implanted (SWI)-Ne measured in meteorites allow for this loss and these high-abundance samples have a Ne/Xe ratio range compatible with the 'recycled-aircorrected' terrestrial mantle. These observations do not support models in which the terrestrial mantle acquired its volatiles from the primary capture of solar nebula gases and, in turn, strongly suggest that the primary terrestrial atmosphere, before isotopic fractionation, is most probably derived from degassed trapped volatiles in accreting material.By contrast, the non-radiogenic argon, krypton and 80 per cent of the xenon in the convecting mantle have the same isotopic composition and elemental abundance pattern as that found in seawater with a small sedimentary Kr and Xe admix. These mantle heavy noble gases are dominated by recycling of air dissolved in seawater back into the mantle. Numerical simulations suggest that plumes sampling the core-mantle boundary would be enriched in seawater-derived noble gases compared with the convecting mantle, and therefore have substantially lower 40 Ar/ 36 Ar. This is compatible with observation. The subduction process is not a complete barrier to volatile return to the mantle.

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“…Since the publication of the paper by Peeters et al (2003) some progress has been made concerning the processes leading to excess air formation and the fractionation of noble gas composition by laboratory experiments (Holocher et al, 2002Kipfer et al, 2002). Nevertheless in field samples the best way to distinguish between the different gas partitioning models are isotope measurements, particularly measurements of Ne isotopes.…”

Section: Resultsmentioning

confidence: 99%

Response to the comment by G. Favreau, A. Guero, and J. Seidel on “Improving noble gas based paleoclimate reconstruction and groundwater dating using 20 Ne/ 22 Ne ratios” (2003) Geochim. Cosmochim. Acta , 67, 587–600 1 1Associate editor: B. Marty

Peeters

Beyerle

Aeschbach–Hertig

et al. 2004

Geochimica et Cosmochimica Acta

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Noble Gases in Lakes and Ground Waters

Cited by 316 publications

References 210 publications

Distribution of helium-3 plumes and deep-sea circulation in the central Indian Ocean

Distribution of helium-3 plumes and deep-sea circulation in the central Indian Ocean

What CO ₂ well gases tell us about the origin of noble gases in the mantle and their relationship to the atmosphere

Response to the comment by G. Favreau, A. Guero, and J. Seidel on “Improving noble gas based paleoclimate reconstruction and groundwater dating using 20 Ne/ 22 Ne ratios” (2003) Geochim. Cosmochim. Acta , 67, 587–600 1 1Associate editor: B. Marty

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Noble Gases in Lakes and Ground Waters

Cited by 316 publications

References 210 publications

Distribution of helium-3 plumes and deep-sea circulation in the central Indian Ocean

Distribution of helium-3 plumes and deep-sea circulation in the central Indian Ocean

What CO 2 well gases tell us about the origin of noble gases in the mantle and their relationship to the atmosphere

Response to the comment by G. Favreau, A. Guero, and J. Seidel on “Improving noble gas based paleoclimate reconstruction and groundwater dating using 20 Ne/ 22 Ne ratios” (2003) Geochim. Cosmochim. Acta , 67, 587–600 1 1Associate editor: B. Marty

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What CO ₂ well gases tell us about the origin of noble gases in the mantle and their relationship to the atmosphere