Age of the Guatemala breccias around the Cretaceous-Tertiary boundary: relationships with the asteroid impact on the Yucatan

The upper part of the near K/T boundary limestone breccia deposits which crop out in Guatemala near 16 °N contains impact remains: altered glass spherules (tektites) and elevated concentrations of iridium. This suggests that these deposits could result from the impact of the K/T boundary asteroid on...

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Veröffentlicht in:	Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science 1998-07, Vol.327 (1), p.47-53
Hauptverfasser:	Fourcade, Éric, Rocchia, Robert, Gardin, Silvia, Bellier, Jean-Pierre, Debrabant, Pierre, Masure, Edwige, Robin, Eric, Pop, Wilmer Toni
Format:	Artikel
Sprache:	eng
Schlagworte:	calcareous nannofossil Continental interfaces, environment Cretaceous-Tertiary boundary dinoflagellate dinoflagellé Earth sciences Earth, ocean, space Exact sciences and technology Foraminifer Foraminifère glass spherule Guatemala iridium limite Crétacé-Tertiaire nannofossile calcaire Ocean, Atmosphere remaniement reworked Sciences of the Universe sphérule de verre Stratigraphy
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