Accueil
Dernières images
S'enregistrer
ConnexionNorth America’s Oldest Human Footprints
La préhistoire en Lorraine :: Palabres autour du feu :: La Préhistoire sur le Web :: dans les Amériques
Page 1 sur 1
North America’s Oldest Human Footprints
Admin Dim 15 Déc 2013 - 8:10
North America’s Oldest Human Footprints
Wednesday, December 11, 2013
(Photo courtesy Arturo Gonzalez)
DURHAM, ENGLAND--Geoarchaeologist Nicholas Felstead of Durham University has conducted a new analysis of human footprints discovered in northeastern Mexico in 1961. The tracks, uncovered during highway construction, had been preserved in travertine, a sedimentary rock that contains traces of uranium. Uranium decays into thorium at predictable rates, allowing scientists to measure the ratio of uranium to thorium and to determine the age of the specimen. Felstead dated the footprints to 10,500 years ago, making them the oldest human footprints in North America. Another track way of 11 prints found in a nearby quarry was dated to 7,250 years ago.
http://archaeology.org/news/1637-mexico-footprints-travertine
Wednesday, December 11, 2013
(Photo courtesy Arturo Gonzalez)
DURHAM, ENGLAND--Geoarchaeologist Nicholas Felstead of Durham University has conducted a new analysis of human footprints discovered in northeastern Mexico in 1961. The tracks, uncovered during highway construction, had been preserved in travertine, a sedimentary rock that contains traces of uranium. Uranium decays into thorium at predictable rates, allowing scientists to measure the ratio of uranium to thorium and to determine the age of the specimen. Felstead dated the footprints to 10,500 years ago, making them the oldest human footprints in North America. Another track way of 11 prints found in a nearby quarry was dated to 7,250 years ago.
http://archaeology.org/news/1637-mexico-footprints-travertine
Admin- Admin
- Messages : 8361
Date d'inscription : 18/12/2009
Age : 56
Localisation : Cirey-sur-Vezouze (54) -
Sujets similaires» Protecting North America's Oldest Structures
» FROM NORTH DAKOTA WITH FLAIR
» Ancient migrations: Coming to America
» FROM NORTH DAKOTA WITH FLAIR
» Ancient migrations: Coming to America
La préhistoire en Lorraine :: Palabres autour du feu :: La Préhistoire sur le Web :: dans les Amériques
Page 1 sur 1
Permission de ce forum:
Vous ne pouvez pas répondre aux sujets dans ce forum
» Animals in Mesolithic Burials in Europe
» Les objets de parure associés au dépôt funéraire mésolithique de Große Ofnet : implications pour la compréhension de l’organisation sociale des dernières sociétés de chasseurs-cueilleurs du Jura Souabe
» Les grands mammifères de la couche 5 de Mutzig I (Bas-Rhin). La subsistance au Paléolithique moyen en Alsace
» Aspects of faunal exploitation in the Middle Palaeolithic : evidence from Wallertheim (Rheinhessen, Germany)
» Middle Paleolithic subsistence in the central Rhine Valley
» Broadening and diversification of hunted resources, from the Late Palaeolithic to the Late Mesolithic, in the North and East of France and the bordering areas
» Les boules de loess d’Achenheim et les "Lihtte Mirr". Essai de paléo-ethnographie comparée
» Les galets tronqués à base plane des lœss de la terrasse de Hangenbieten
» Néolithique "initial"', néolithique ancien et néolithisation dans l'espace centre-européen : une vision rénovée