A Possible Tektite Strewn Field in the Argentinian Pampa

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Science  10 May 2002:
Vol. 296, Issue 5570, pp. 1109-1111
DOI: 10.1126/science.1068345

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Impact glass associated with 11 elongate depressions in the Pampean Plain of Argentina, north of the city of Rı́o Cuarto, was suggested to be proximal ejecta related to a highly oblique impact event. We have identified about 400 additional elongate features in the area that indicate an aeolian, rather than an impact, origin. We have also dated fragments of glass found at the Rı́o Cuarto depressions; the age is similar to that of glass recovered 800 kilometers to the southeast. This material may be tektite glass from an impact event around 0.48 million years ago, representing a new tektite strewn field.

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