Impact glasses from Belize represent tektites from the Pleistocene Pantasma impact crater in Nicaragua
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Impact glasses from Belize represent tektites from the Pleistocene Pantasma impact crater in Nicaragua. / 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.
In: Communications Earth & Environment, Vol. 2, No. 1, 94, 2021.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Impact glasses from Belize represent tektites from the Pleistocene Pantasma impact crater in Nicaragua
AU - Rochette, Pierre
AU - Beck, Pierre
AU - Bizzarro, Martin
AU - Braucher, Regis
AU - Cornec, Jean
AU - Debaille, Vinciane
AU - Devouard, Bertrand
AU - Gattacceca, Jerome
AU - Jourdan, Fred
AU - Moustard, Fabien
AU - Moynier, Frederic
AU - Nomade, Sebastien
AU - Reynard, Bruno
PY - 2021
Y1 - 2021
N2 - 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.
AB - 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.
KW - IVORY-COAST
KW - AUSTRALASIAN TEKTITES
KW - GEOCHEMISTRY
KW - BE-10
KW - AGE
KW - IDENTIFICATION
KW - METEORITES
KW - CR
U2 - 10.1038/s43247-021-00155-1
DO - 10.1038/s43247-021-00155-1
M3 - Journal article
C2 - 34409303
VL - 2
JO - Communications Earth and Environment
JF - Communications Earth and Environment
SN - 2662-4435
IS - 1
M1 - 94
ER -
ID: 272416031