In Situ Radiometric and Exposure Age Dating of the Martian Surface

@article{Farley2014InSR,
  title={In Situ Radiometric and Exposure Age Dating of the Martian Surface},
  author={K. Farley and C. Malespin and P. Mahaffy and J. Grotzinger and P. Vasconcelos and R. Milliken and M. Malin and K. Edgett and A. Pavlov and J. Hurowitz and J. Grant and H. Miller and R. Arvidson and L. Beegle and F. Calef and P. Conrad and W. Dietrich and J. Eigenbrode and R. Gellert and S. Gupta and V. Hamilton and D. Hassler and K. Lewis and S. McLennan and D. Ming and R. Navarro-Gonz{\'a}lez and S. Schwenzer and A. Steele and E. Stolper and D. Sumner and D. Vaniman and A. Vasavada and K. Williford and R. Wimmer-Schweingruber},
  journal={Science},
  year={2014},
  volume={343}
}
We determined radiogenic and cosmogenic noble gases in a mudstone on the floor of Gale Crater. A K-Ar age of 4.21 ± 0.35 billion years represents a mixture of detrital and authigenic components and confirms the expected antiquity of rocks comprising the crater rim. Cosmic-ray–produced 3He, 21Ne, and 36Ar yield concordant surface exposure ages of 78 ± 30 million years. Surface exposure occurred mainly in the present geomorphic setting rather than during primary erosion and transport. Our… Expand
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References

SHOWING 1-10 OF 76 REFERENCES
Dating geomorphologic surfaces using cosmogenic 3He
  • 118
Elemental Geochemistry of Sedimentary Rocks at Yellowknife Bay, Gale Crater, Mars
  • 216
  • PDF
Cenozoic variations in the flux of interplanetary dust recorded by3He in a deep-sea sediment
  • 126
Gale crater: the Mars Science Laboratory/Curiosity Rover Landing Site
  • J. Wray
  • Geology
  • International Journal of Astrobiology
  • 2012
  • 65
  • PDF
Geologic history of Mars
  • 412
  • PDF
...
1
2
3
4
5
...