Special Issue: Paleomagnetism and Tectonics in Latinamerica
Magnetostratigraphy of the Cretaceous/Tertiary boundary and early Paleocene sedimentary sequence from the Chicxulub Impact Crater
Earth, Planets and Space volume 58, pages 1309–1314 (2006)
We report on the magnetostratigraphy of the Chicxulub crater impact breccias and first 15 meters of the Paleocene sedimentary sequence recovered in three boreholes of the UNAM Scientific Drilling Program. Three geomagnetic polarity zones are documented in the impact breccias and sedimentary sequence, which span from chron 29R to 28N. For the 15 m interval they represent ∼2.5 Ma, which yields low apparent sedimentary rates for boreholes UNAM-5 (110 km from the center of the crater) and UNAM-7 (127 km from the center of the crater). The carbonate sedimentary sequence can be associated to a shallow basin depositional environment. In these boreholes the thickness between the 29R and the 29N chrons is just 0.5 m, suggesting that during the 100 ka from the K/T boundary to the polarity transition sediments were not deposited or eroded. Within borehole UNAM-6 (152 km from the center of the crater) it appears that sediments containing chron 29N are missing, the lack of the upper breccias, the long duration of a reversal event within the base of the sequence and low apparent sedimentary rate of 3.3 m/Ma, suggests a hiatus within the impact breccias and the basal Paleocene sedimentary sequence. Magnetic susceptibility logs confirm absence of the upper breccias at UNAM-6 borehole. Magnetic susceptibility values increase towards the base of the sequence, suggesting that basement and melt clasts were subjected to a low temperature hydrothermal alteration.
Cande, S. C. and D. V. Kent, Revised calibration of the geomagnetic polarity timescale for the Late Cretaceous and Cenozoic, Journal of Geophysical Research, 100(B4), 6093–6095, 1995.
Fisher, R. A., Dispersion on a sphere, Proc. Roy. Soc. London, A217, 295–305, 1953.
Hildebrand, A. R., G. T. Penfield, D. A. Kring, M. Pilkington, A. Camargo, S. B. Jacobsen, and W. V. Boyton, Chicxulub Crater: A possible Cretaceous/Tertiary boundary impact crater on the Yucatan Peninsula, Mexico, Geology, 19, 867–871, 1991.
Hörz, F., R. Ostertag et al., Bunte breccia of the Ries: Continous Deposits of large Impact Crater, Reviews of Geophysical Space Physics, 21, 1667–1725, 1983.
Johnson, N. M. and V. E. McGee, Magnetic polarity stratigraphy: Stochastic properties of data, sampling problems, and the evolution of interpretations, Journal Geophysical Research, 88, 1213–1221, 1983.
Keller, G., W. Stinnesbeck, T. Adatte, M. Rebolledo-Vieyra, J. Urrutia-Fucugauchi, U. Kramar, and Stüben, D., Chicxulub impact predates K-T boundary mass extinction, Proceedings of the National Academy of Sciences, 101, 11, 3753–3758, 2004.
Kirschvink, J. L., The least-square line and plane and the analysis of palaeomagnetic data, Geophysical Journal of the Royal Astronomical Society, 62, 699–718, 1980.
Lopez-Ramos, E., Estudio geologico de la Peninsula de Yucatan, Asociacion Mexicana de Geologos Petroleros, Boletin, 25, 23–76, 1973.
Marin, L. E., V. L. Sharpton, J. Smit, P. Sikora, C. Carney, and M. Rebolledo-Vieyra, Stratigraphy at ground zero: A contemporary evaluation of well data in the Chicxulub impact crater, International Geology Review, 43, 12, 1145–1149, 2001.
Newsom, H. G., G. Graup, D. Fseri, J. Geissman, and K. Keil, The formation of the Ries crater, West Germany: Evidence of atmospheric interactions during a large cratering event, in Global Catastrophes in Earth History: An Interdisciplinary conference on Impacts, Volcanism and Mass Mortality, edited by V. L. Sharpton and P. D. Ward, Geol. Soc. Am. Sp. Pap., 247, pp. 196–206, 1990.
Penfield, G. T. and A. Camargo, Definition of a major igneous zone in the central Yucatan platform with aeromagnetics and gravity, Soc. Explor. Geophys. Annu. Meeting, Tech. Progr. Abstracts, 51, 37 (abstr), 1981.
Pilkington, M., D. E. Ames, and A. R. Hildebrand, Magnetic mineralogy of the Yaxcopoil-1 core, Chicxulub crater, Meteoritics and Planetary Sciences, 39, 831–842, 2004.
Pope, K. O., A. C. Ocampo, G. L. Kinsland, and R. Smith, Surface expression of the Chicxulub crater, Geology, 24, 527–530, 1996.
Rebolledo-Vieyra, M. and J. Urrutia-Fucugauchi, High-resolution magnetic susceptibility record of the impact lithologies of the Chicxulub impact crater, EOS, Transactions American Geophysical Union, 80, 46. F595, 1999.
Rebolledo-Vieyra, M. and J. Urrutia-Fucugauchi, Magnetostratigraphy of the impact breccias and post-impact carbonates from borehole Yaxcopoil-1, Chicxulub impact crater, Yucatan, Mexico, Meteoritics and Planetary Science, 39(6 and 7), 821–830, 2004.
Rebolledo-Vieyra, M., J. Urrutia-Fucugauchi, L. Marin, A. Trejo-Garcia, A. M. Soler-Arechalde, and V L. Sharpton, UNAM Scientific Shallow Drilling Program of the Chicxulub impact crater, International Geology Review, 42, 948–972, 2000.
Sadler, P. M., Sediment accumulation rates and the completeness of stratigraphic sections, Journal of Geology, 89, 569–584, 1981.
Sharpton, V. L., G. B. Dalrymple, L. E. Marin, G. Ryder, B. C. Shuraytz, and J. Urrutia-Fucugauchi, New links between the Chicxulub impact structure and the Cretaceous/Tertiary boundary, Nature, 359, 819–821, 1992.
Smit, J., The global stratigraphy of the Cretaceous-Tertiary boundary impact ejecta, Annu. Rev. Earth Planet. Sci., 25,75–113, 1999.
Smit, J., S. V D. Gaast et al., Is the transition impact to post-impact rock complete? Some remarks based on XRF scanning, electron-microprobe, and thin section analyses of the Yaxcopoil-1 core in the Chicxulub crater, Meteoritics and Planetary Sciences, 39(6–7), 1113–1126, 2004.
Stöffler, D., Research drilling Nördlingen 1973: polymictic breccias, crater basement and cratering model of the Ries impact crater, Geol. Bavarica, 75, 443–458, 1977.
Swisher, C. C. and 11 others, Coeval 40Ar/39 Ar ages of 65.0 million years ago from Chicxulub crater melt rock and Cretaceous/Tertiary boundary tektites, Science, 257, 954–958, 1996.
Urrutia-Fucugauchi, J., L. Marin, and V. L. Sharpton, Reverse polarity magnetized melt rocks from the Cretaceous/Tertiary Chicxulub structure, Yucatan peninsula, Mexico, Tectonophysics, 237, 105–112, 1994.
Urrutia-Fucugauchi, J., J. Morgan, D. Stoeffler, and P. Claeys, (Eds), The Chicxulub Scientific Drilling Project, Meteoritics and Planetary Sciences, 39(6 and 7), 2004a.
Urrutia-Fucugauchi, J., A. M. Soler-Arechalde, M. Rebolledo-Vieyra, and P. Vera-Sánchez, Paleomagnetic and rock-magnetic study of the Yaxcopoil-1 impact breccia sequence, Chicxulub impact crater (Mexico), Meteoritics and Planetary Sciences, 39(6 and 7), 843–856, 2004b.
Von Engelhardt, W., Distribution, petrography and shock metamorphism of the ejecta of the Ries crater in Germany—A review, Tectonophysics, 171,259–273,1990.
Ward, W. C., G. Keller, W. Stinnesbeck, and T. Adatte, Yucatan subsurface stratigraphy: Implications and constraints for the Chicxulub impact, Geology, 23, 873–876, 1995.
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Rebolledo-Vieyra, M., Urrutia-Fucugauchi, J. Magnetostratigraphy of the Cretaceous/Tertiary boundary and early Paleocene sedimentary sequence from the Chicxulub Impact Crater. Earth Planet Sp 58, 1309–1314 (2006). https://doi.org/10.1186/BF03352626