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Some Problems and Hypotheses Relative to the Early Entry of Man into America
by
Bryan, Alan L.
in
Bison
/ Bones
/ Geology
/ Glacial landforms
/ Glaciers
/ Gravel
/ Ice sheets
/ Land bridges
/ Projectiles
/ Radiocarbon dating
1968
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Do you wish to request the book?
Some Problems and Hypotheses Relative to the Early Entry of Man into America
by
Bryan, Alan L.
in
Bison
/ Bones
/ Geology
/ Glacial landforms
/ Glaciers
/ Gravel
/ Ice sheets
/ Land bridges
/ Projectiles
/ Radiocarbon dating
1968
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Some Problems and Hypotheses Relative to the Early Entry of Man into America
Journal Article
Some Problems and Hypotheses Relative to the Early Entry of Man into America
1968
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Overview
Les études portant sur ce qu'on appelle le \"corridor libre de glace\" situé à l'est des Rocheuses, sont trop souvent imprégnées d'impressions vagues. L'auteur de cet article évalue l'état actuel de nos connaissances sur le pléistocène du détroit de Béring et du \"corridor\". Cette étude l'amène à aborder la question de l'homme primitif en Amérique et à présenter deux hypothèses de travail: (1) que le \"corridor\" fut couvert de glace une seule fois entre les années 20,000 et 9,000 et (2) que l'immigration la plus importante en Amérique s'est accomplie au cours d'une période s'étendant de 25,000 à 20,000 années avant le siècle présent. De plus, l'auteur soutient que l'industrie primitive des têtes de flèches fut développée au sud de la couche de glace et qu'elle s'est propagée par la suite vers le nord.
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