Effect of the Tunguska Meteor and Sunspots on Radiocarbon in Tree Rings

@article{Lerman1967EffectOT,
  title={Effect of the Tunguska Meteor and Sunspots on Radiocarbon in Tree Rings},
  author={Juan Carlos Lerman and Willem G. Mook and John C. Vogel},
  journal={Nature},
  year={1967},
  volume={216},
  pages={990-991}
}
SEVERAL hypotheses have been advanced to explain the peculiar circumstances associated with the fall of the Tunguska Meteor on June 30, 1908, in Siberia (lat. 60° 55′ N., long. 101° 57′ E.). An exhaustive description of the phenomena is given by Krinov1. Especially puzzling is the apparent absence of a meteoric crater, but Krinov2 does report some recent analyses of soil in the region which show iiickeliferous iron and silicate globules. 
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