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Impact glasses from Belize represent tektites from the Pleistocene Pantasma impact crater in Nicaragua

Authors :
Rochette, Pierre
Beck, Pierre
Bizzarro, Martin
Braucher, Regis
Cornec, Jean
Debaille, Vinciane
Devouard, Bertrand
Gattacceca, Jerome
Jourdan, Fred
Moustard, Fabien
Moynier, Frederic
Nomade, Sebastien
Reynard, Bruno
Rochette, Pierre
Beck, Pierre
Bizzarro, Martin
Braucher, Regis
Cornec, Jean
Debaille, Vinciane
Devouard, Bertrand
Gattacceca, Jerome
Jourdan, Fred
Moustard, Fabien
Moynier, Frederic
Nomade, Sebastien
Reynard, Bruno
Source :
Rochette , P , Beck , P , Bizzarro , M , Braucher , R , Cornec , J , Debaille , V , Devouard , B , Gattacceca , J , Jourdan , F , Moustard , F , Moynier , F , Nomade , S & Reynard , B 2021 , ' Impact glasses from Belize represent tektites from the Pleistocene Pantasma impact crater in Nicaragua ' , Communications Earth & Environment , vol. 2 , no. 1 , 94 .
Publication Year :
2021

Abstract

Impact glasses discovered in Belize originate from the Pantasma impact crater in Nicaragua 530 km away and probably represent a tektite strewn-field, according to geochemical analyses and isotope geochronology.Tektites are terrestrial impact-generated glasses that are ejected long distance (up to 11,000 km), share unique characteristics and have a poorly understood formation process. Only four tektite strewn-fields are known, and three of them are sourced from known impact craters. Here we show that the recently discovered Pantasma impact crater (14 km diameter) in Nicaragua is the source of an impact glass strewn-field documented in Belize 530 km away. Their cogenesis is documented by coincidental ages, at 804 +/- 9 ka, as well as consistent elemental compositions and isotopic ratios. The Belize impact glass share many characteristics with known tektites but also present several peculiar features. We propose that these glasses represent a previously unrecognized tektite strewn-field. These discoveries shed new light on the tektite formation process, which may be more common than previously claimed, as most known Pleistocene >10 km diameter cratering events have generated tektites.

Details

Database :
OAIster
Journal :
Rochette , P , Beck , P , Bizzarro , M , Braucher , R , Cornec , J , Debaille , V , Devouard , B , Gattacceca , J , Jourdan , F , Moustard , F , Moynier , F , Nomade , S & Reynard , B 2021 , ' Impact glasses from Belize represent tektites from the Pleistocene Pantasma impact crater in Nicaragua ' , Communications Earth & Environment , vol. 2 , no. 1 , 94 .
Notes :
application/pdf, English
Publication Type :
Electronic Resource
Accession number :
edsoai.on1322762577
Document Type :
Electronic Resource