Apatite 4He/3He and (U-Th)/He Evidence for an Ancient Grand Canyon

@article{Flowers2012Apatite4A,
  title={Apatite 4He/3He and (U-Th)/He Evidence for an Ancient Grand Canyon},
  author={R. Flowers and K. Farley},
  journal={Science},
  year={2012},
  volume={338},
  pages={1616 - 1619}
}
A Grand Old Canyon In the southwestern United States, the Grand Canyon is a striking example of the power of erosion over time. Over millions of years, flowing river water carved out the canyon that today measures over 1.6 km deep and 29 km long. Most models posit that the majority of the canyon formed 5 to 6 million years ago. Using thermochronometry, Flowers and Farley (p. 1616, published online 29 November) examined the temperature-dependent diffusion of helium within mineral grains… Expand
The influence of burial heating on the (U–Th)/He system in apatite: Grand Canyon case study
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