Publication Abstracts

Rampino and Reynolds 1983

Rampino, M.R., and R.C. Reynolds, 1983: Clay mineralogy of the Cretaceous-Tertiary boundary clay. Science, 219, 495-498, doi:10.1126/science.219.4584.495.

Cretaceous-Tertiary boundary layer clay samples from four localities were subjected to analyses which imply that they are neither mineralogically exotic nor distinct from locally derived clays above and below the boundary. The anomalous iridium-rich ejecta component predicted by the asteroid impact scenario of Alvarez et al (1980) was not detected. It is proposed that volcanic material be considered as an explanation of the geochemical anomalies of the Cretaceous-Tertiary boundary. A model which involves a period of intense volcanism at the end of the Cretaceous would generate a variety of climatic and biological effects consonant with the geologic history of that period.

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BibTeX Citation

@article{ra01100t,
  author={Rampino, M. R. and Reynolds, R. C.},
  title={Clay mineralogy of the Cretaceous-Tertiary boundary clay},
  year={1983},
  journal={Science},
  volume={219},
  pages={495--498},
  doi={10.1126/science.219.4584.495},
}

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RIS Citation

TY  - JOUR
ID  - ra01100t
AU  - Rampino, M. R.
AU  - Reynolds, R. C.
PY  - 1983
TI  - Clay mineralogy of the Cretaceous-Tertiary boundary clay
JA  - Science
VL  - 219
SP  - 495
EP  - 498
DO  - 10.1126/science.219.4584.495
ER  -

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