References most appropriate for an introduction to the topic are marked with a dot.

1. Raup, D. M. & Sepkoski, J. J. 1984. Publishing chronology. Nature, 309, 300.

2. Alvarez, L. W., Alvarez, W., Asaro, F. & Michel, H. V. 1980. Extraterrestrial cause for the

Cretaceous-Tertiary Extinction. Science, 208, 1095-1108.

3. Penfield, G. T. & Camargo Z., A. 1981. Definition of a major igneous zone in the central

Yucatan platform with aeromagnetics and gravity. In: Technical program, abstracts and
biographies (Society of Exploration Geophysicists 51st annual international meeting) Los
Angeles, Society of Exploration Geophysicists, p. 37.

  • 4. Hildebrand, A. R., Penfield, G. T., Kring, D. A., Pilkington, M., Camargo Z., A.,
    Jacobsen, S. B. & Boynton, W. V. 1991. Chicxulub crater: A possible Cretaceous/Tertiary
    boundary impact crater on the Yucatan Peninsula, Mexico. Geology, 19, 867-871.

    5. Wolfe, J. A. 1991. Palaeobotanical evidence for a June 'impact winter' at the Cretaceous/Tertiary

    boundary. Nature, 352, 420-423.

    6. Sharpton, V. L., Dalrymple, G. D., Marin, L. E., Ryder, G., Schuraytz, B. C. &

    Urruita-Fucugauchi, J. 1992. New links between the Chicxulub impact structure and the
    Cretaceous/Tertiary boundary. Nature, 359, 819-821.

    7. Izett, G. A., Dalrymple, G. B. & Snee, L. W. 1991. Ar-40/Ar-39 age of Cretaceous-Tertiary

    boundary tektites from Haiti. Science, 252, 1539-1542.

    8. Hall, C. M., York, D. & Sigurdsson, H. 1992. Eos, 72, 531.

    9. McWilliams, M. O., Baksi, A. K., Bohor, B. F., Izett, G. A. & Murali, A. V. 1992. Eos, 73

    (14 suppl.), 363.

    10. Swisher, C. C. and 10 others. 1992. Coeval 40Ar/39Ar ages of 65.0 million years ago from

    Chicxulub crater melt rock and Cretaceous/Tertiary boundary tektites. Science, 257,

  • 11. Ward, W. C., Keller, G., Stinnesbeck, W. & Adatte, T. 1995. Yucatan subsurface
    stratigraphy: Implications and constraints for the Chicxulub impact. Geology, 23 (no. 10),

    12. Blum, J. D., Chamberlain, C. P., Hingston, M. P., Koeberl, C., Marin, L. E., Schuraytz, B.

    C. & Sharpton, V. L. 1993. Isotopic comparison of K/T boundary impact glass with melt
    rock from the Chicxulub and Manson impact structures. Nature, 364, 325-327.

    13. Izett, G. A., Cobban, W. A., Obradovich, J. D. & Kunk, M. J. 1993. The Manson impact

    structure: 40Ar/39Ar age and its distal impact ejecta in the Pierre shale in southeastern
    South Dakota. Science, 262, 729-732.

    14. Maurrasse, F. J-M. R. & Sen, G. 1991. Impacts, tsunamis, and the Haitian

    Cretaceous-Tertiary boundary layer. Science, 252, 1690-1693.

  • 15. Hildebrand, A. R., Pilkington, M., Connors, M., Ortiz-Aleman, C. & Chavez, R. E. 1995.
    Size and structure of the Chicxulub crater revealed by horizontal gravity gradients and
    cenotes. Nature, 376, 415-417.

    16. Sharpton, V. L., and 9 others. 1993. Chicxulub multiring impact basin: Size and other

    characteristics derived from gravity analysis. Science, 261, 1564-1567.

  • 17. Schultz, P. H. & D'Hondt, S. 1996. Cretaceous-Tertiary (Chicxulub) impact angle and its
    consequences. Geology, 24 (no. 11), 963-967.

    18. Sharpton, V. L., Schuraytz, B. C. & Marin, L. E. 1994. Chicxulub ejecta deposits: Their

    importance for understanding the size and devastation of the KT impact event. Geological
    Society of America Abstracts with Programs, 26 (no. 7), p. A334.

    19. Schuraytz, B. C., Sharpton, V. L. & Marin, L. E. 1994. Petrology of impact-melt rocks at the

    Chicxulub multiring basin, Yucatan, Mexico. Geology, 22, 868-872.

    20. Marin, L. E. & Sharpton, V. 1994. Recent drilling and core recovery within the Chicxulub

    impact structure, northern Yucatan, Mexico (abs.) Eos (Transactions, American
    Geophysical Union), 75 (no. 44, suppl.), 408-409.

  • 21. Alvarez, W., Claeys, P. & Kieffer, S. W. 1995. Emplacement of Cretaceous-Tertiary
    boundary shocked quartz from Chicxulub crater. Science, 269, 930-935.

    22. Chen, G., Tyburczy, J. A. & Ahrens, T. J. 1993. Shock-induced devolatilization of calcium

    sulfate and implications for K-T extinctions. Earth and Planetary Science Letters, 128,

    23. Pope, K. O., Baines, K. H., Ocampo, A. C. & Ivanov, B. A. 1994. Impact winter and the

    Cretaceous/Tertiary extinctions: Results of a Chicxulub asteroid impact model. Earth and
    Planetary Science Letters, 128, 719-725.

  • 24. Benton, M. J. & Little, C. T. S. 1994. Impact in the Caribbean and death of the dinosaurs.
    Geology Today, Nov-Dec, 222. Home Topics