Skip to main content Accessibility help
×
Home

Radiocarbon Dating of Groundwater in Granite Fractures in Abukuma Province, Northeast Japan

  • H A Takahashi (a1), T Nakamura (a2), H Tsukamoto (a1), K Kazahaya (a1), H Handa (a1) and A Hirota (a1)...

Abstract

Knowledge of the groundwater age is indispensable for understanding groundwater flow in crystalline rocks. The present study is the first to discuss the radiocarbon ages of groundwater in Abukuma granite, Fukushima Prefecture, northeast Japan. The vertical profiles of 14C dates and δ13C are obtained from 3 boreholes (depths of 140, 230, and 306 m). Chemical and carbon isotopic compositions suggest that dead-carbon contamination of groundwater occurred during groundwater storage in the fractures. 14C concentration was corrected by using isotopic mass balance in which dead-carbon contamination of the groundwater was considered. The 14C dates ranged from modern to ≃16 ka. The relationship between tritium and 14C data in 1 borehole suggests the simultaneous inflow of shallow groundwater to deeper levels occur for the depths between 60 and 100 m. The vertical profiles of 14C dates indicate a relatively constant age of 10–16 ka for groundwater deeper than 100 m, which may have been influenced by rapid sea-level changes after the glacial period.

Copyright

Corresponding author

2 Corresponding author. Email: h.a.takahashi@aist.go.jp.

References

Hide All
Ayraud, V, Aquilina, L, Labasque, T, Pauwels, H, Molenat, J, Pierson-Wickmann, AC, Durand, V, Bour, O, Tarits, C, Le Corre, P, Fourre, E, Merot, P, Davy, P. 2008. Compartmentalization of physical and chemical properties in hard-rock aquifers deduced from chemical and groundwater age analyses. Applied Geochemistry 23(9):2686–707.
Berkowitz, B. 2002. Characterizing flow and transport in fractured geological media: a review. Advances in Water Resources 25(8–12):861–84.
Bird, MI, Pousai, P. 1997. Variations of δ13C in the surface soil organic carbon pool. Global Biogeochemical Cycles 11(3):313–22.
Bottomley, DJ, Gascoyne, M, Kamineni, DC. 1990. The geochemistry, age, and origin of groundwater in a Mafic Pluton, East Bull Lake, Ontario, Canada. Geochimica et Cosmochimica Acta 54(4):933–1008.
Davidson, GR. 1995. The stable isotopic composition and measurement of carbon in soil CO2 . Geochimica et Cosmochimica Acta 59(12):2485–9.
de Dreuzy, JR, Darcel, C, Davy, P, Bour, O. 2004. Influence of spatial correlation of fracture centers on the permeability of two-dimensional fracture networks following a power law length distribution. Water Resources Research 40(1):W01502, doi:10.1029/2003WR00226.
Dewandel, B, Lachassagne, P, Wyns, R, Marechal, JC, Krishnamurthy, NS. 2006. A generalized 3–D geological and hydrogeological conceptual model of granite aquifers controlled by single or multiphase weathering. Journal of Hydrology 330(1–2):260–84.
Gustafson, G, Krásný, J. 1994. Crystalline rock aquifers: their occurrence, use and importance. Applied Hydrogeology 2(2):6475.
Gustafson, G, Gylling, B, Selroos, JO. 2009. The Aspö Task Force on groundwater flow and transport of solutes: bridging the gap between site characterization and performance assessment for radioactive waste disposal in fractured rocks. Hydrogeology Journal 17(5):1031–3.
Hoefs, J. 2009. Stable Isotope Geochemistry. 6th edition. Berlin: Springer. 288 p.
Jouzel, J, Merlivat, L, Lorius, C. 1982. Deuterium excess in an East Antarctic ice core suggests higher relative-humidity at the oceanic surface during the Last Glacial Maximum. Nature 299(5885):688–91.
Kamei, A, Takagi, T. 2003. Geology and petrography of the Abukuma granites in the Funehiki area, Fukushima Prefecture, NE Japan. Journal of the Geological Society of Japan 109(4):234–51. In Japanese with English abstract.
Keeling, CD. 1958. The concentration and isotopic abundances of atmospheric carbon dioxide in rural areas. Geochimica et Cosmochimica Acta 13(4):322–34.
Nakamura, T, Niu, E, Oda, H, Ikeda, A, Minami, M, Takahashi, H, Adachi, M, Pals, L, Gottdang, A, Suya, N. 2000. The HVEE Tandetron AMS system at Nagoya University. Nuclear Instruments and Methods in Physics Research B 172(1–4):52–7.
Neuman, SP. 2005. Trends, prospects and challenges in quantifying flow and transport through fractured rocks. Hydrogeology Journal 13(1):124–47.
O'Leary, MH. 1988. Carbon isotopes in photosynthesis. BioScience 38(5):328–36.
Ohwada, M, Satake, H, Nagao, K, Kazahaya, K. 2007. Formation processes of thermal waters in Green Tuff: a geochemical study in the Hokuriku district, central Japan. Journal of Volcanology and Geothermal Research 168(1–4):5567.
Parkhurst, DJ, Appelo, CAJ. 1999. User's guide to PHREEQC (Version 2)—A computer program for speciation, batch-reaction, one- dimensional transport, and inverse geochemical calculations. US Geological Survey Water-Resources Investigations Report 99–4259:310.
Stuiver, M, Polach, HA. 1977. Discussion: reporting of 14C data. Radiocarbon 19(3):355–63.
Tong, P, Zhao, D, Yang, D. 2012. Tomography of the 2011 Iwaki earthquake (M 7.0) and Fukushima nuclear power plant area. Solid Earth 3(1):4351.
Umeda, K, Asamori, K, Negi, T, Kusano, T. 2011. A large intraplate earthquake triggered by latent magmatism. Journal of Geophysical Research-Solid Earth 116:B01207, doi: 10.1029/2010JB007963.
Zhang, J, Quay, PD, Wilbur, DO. 1995. Carbon-isotope fractionation during gas-water exchange and dissolution of CO2 . Geochimica et Cosmochimica Acta 59(1):107–14.

Related content

Powered by UNSILO

Radiocarbon Dating of Groundwater in Granite Fractures in Abukuma Province, Northeast Japan

  • H A Takahashi (a1), T Nakamura (a2), H Tsukamoto (a1), K Kazahaya (a1), H Handa (a1) and A Hirota (a1)...

Metrics

Altmetric attention score

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed.