The DOI matches its Crossref record; 50 of the 50 references it cites were found in a registry or an index.
THE GLOBAL STRATIGRAPHY OF THE CRETACEOUS-TERTIARY BOUNDARY IMPACT EJECTA
Abstract
▪ Abstract The Chicxulub crater ejecta stratigraphy is reviewed, in the context of the stratigraphy of underlying and overlying rock sequences. The ejecta sequence is regionally grouped in (a) thick polymict and monomict breccia sequences inside the crater and within 300 km from the rim of the crater known from drill holes in and close to the breater, and exposures near the border of Yucatan and Belize; (b) Gulf of Mexico region, <2500 m from the crater, with up to 9 m thick, complex, tsunami-wave influenced, tektite-bearing sequences in shallow marine (<500 m deep) environments and tektite bearing, decimeter thick gravity-flow deposits in deep water sites; (c) an intermediate region between 2500 and 4000 km from the crater where centimeter thick, tektite-bearing layers occur, and (d) a global distal region with a millimeter thin ejecta layer. The distal ejecta layer is characterized by sub-millimeter sized microkrystites, often rich in Ni-rich spinels and (altered) clinopyroxene. Wherever present, the ejecta layers mark exactly the sudden mass-mortality horizon of the K/T boundary. What exactly caused the mass mortality is still uncertain, but it appears the main event leading to the K/T mass extinctions.
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Cited by
The Chicxulub Asteroid Impact and Mass Extinction at the Cretaceous-Paleogene Boundary
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Impact spherules as a record of an ancient heavy bombardment of Earth
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Metadata
- Authors
- Smit, J.
- Venue
- Annual Review of Earth and Planetary Sciences
- Publisher
- Annual Reviews
- Published
- 1999-05
- Volume
- 27
- Issue
- 1
- Pages
- 75-113
- ISSN
- 0084-6597 (ISSN-L)
- 1545-4495
- OpenAlex
- W2116735545
- Cited by
- 466
- References
- 50
- FWCI
- 2.87
- Type
- journal article
- Language
- en
- Open access
- closed
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- Smit, J. (1999). THE GLOBAL STRATIGRAPHY OF THE CRETACEOUS-TERTIARY BOUNDARY IMPACT EJECTA. Annual Review of Earth and Planetary Sciences. https://doi.org/10.1146/annurev.earth.27.1.75
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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