• DOI:10.1038/292047A0
Corpus ID: 4331801

Sanidine spherules at the Cretaceous–Tertiary boundary indicate a large impact event

@article{Smit1981SanidineSA,
  title={Sanidine spherules at the Cretaceous–Tertiary boundary indicate a large impact event},
  author={J. Smit and G. Klaver},
  journal={Nature},
  year={1981},
  volume={292},
  pages={47-49}
}

• J. Smit, G. Klaver
• Published 1981
• Geology
• Nature

The hypothesis that a catastrophic impact of an extraterrestrial body caused the terminal Cretaceous mass extinctions of dinosaurs, planktonic foraminfera and other species is now accepted as respectable following the discovery of a worldwide iridium enrichment in the Cretaceous–Tertiary (K–T) boundary clay1–5. In the basal lamina of the K–T boundary clay of Caravaca (Spain)7 numerous spherules were discovered composed of finely crystallized, almost pure K-feldspar in the structural state of… Expand

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