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Camilion C, Hames W, King J, et al. A 3.3-Ma impact in argentina and possible consequences . Science. 1998;282(5396):2061-3doi: 10.1126/science.282.5396.2061.
Camilion, C., Hames, W., King, J., Schultz, P. H., & Zarate, M. (1998). A 3.3-Ma impact in argentina and possible consequences . Science (New York, N.Y.), 282(5396), 2061-3. https://doi.org/10.1126/science.282.5396.2061
Camilion, et al. "A 3.3-Ma impact in argentina and possible consequences ." Science (New York, N.Y.) vol. 282,5396 (1998): 2061-3. doi: https://doi.org/10.1126/science.282.5396.2061
Camilion C, Hames W, King J, Schultz PH, Zarate M. A 3.3-Ma impact in argentina and possible consequences . Science. 1998 Dec 11;282(5396):2061-3. doi: 10.1126/science.282.5396.2061. PMID: 9851923.
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Science. 1998 Dec 11;282(5396):2061-3. doi: 10.1126/science.282.5396.2061.

A 3.3-Ma impact in argentina and possible consequences .

Science (New York, N.Y.)

Camilion, Hames, King, Schultz, Zarate

Affiliations

  1. P. H. Schultz, Geological Sciences, Brown University, Providence, RI 02912-1846, USA. M. Zarate, Consejo Nacional de Investigaciones Cientificas y Tecnicas, Instituto Argentino de Nivologia y Glaciologia, Centro Regional de Investigacion.

PMID: 9851923 DOI: 10.1126/science.282.5396.2061

Abstract

Enigmatic glassy materials (escorias) and red bricklike materials (tierras cocidas) occur at a restricted stratigraphic level (the top of the Chapadmalal Formation). Materials from one locality near Mar del Plata are attributed to a mid-Pliocene impact event with a radiometric and magnetostratigraphic age of 3.3 million years ago (Ma). An extinction of endemic fauna (including the glyptodonts and flightless cariamid birds) correlates with the unit containing the impact glasses. Moreover, the age of the glasses is coincident within dating uncertainties with a pulselike change in the oxygen isotope marine record in the Atlantic and Pacific Oceans just before the late Pliocene deterioration of the climate.

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