CO2 diffusion into pore spaces limits weathering rate of an experimental basalt landscape

@article{Haren2017CO2DI,
  title={CO2 diffusion into pore spaces limits weathering rate of an experimental basalt landscape},
  author={J. Haren and K. Dontsova and G. Barron-Gafford and P. Troch and J. Chorover and Stephen DeLong and D. Breshears and T. Huxman and J. Pelletier and S. Saleska and X. Zeng and J. Ruiz},
  journal={Geology},
  year={2017},
  volume={45},
  pages={203-206}
}
  • J. Haren, K. Dontsova, +9 authors J. Ruiz
  • Published 2017
  • Geology
  • Geology
  • Basalt weathering is a key control over the global carbon cycle, though in situ measurements of carbon cycling are lacking. In an experimental, vegetation-free hillslope containing 330 m 3 of ground basalt scoria, we measured real-time inorganic carbon dynamics within the porous media and seepage flow. The hillslope carbon flux (0.6–5.1 mg C m –2 h –1 ) matched weathering rates of natural basalt landscapes (0.4–8.8 mg C m –2 h –1 ) despite lacking the expected field-based impediments to… CONTINUE READING

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