The evidence for Middle-Wisconsin peopling of Beringia: an evaluation
Amérique du Nord ; Analyse taphonomique ; Beringia ; Géographie historique ; Histoire de la géographie ; Histoire du peuplement ; Méthodologie ; Ossement fossile ; Peuplement ; Pléistocène supérieur ; Préhistoire ; Pseudo-artefact ; Quaternaire
Broken large mammal fossil bones in eastern Beringia have been used to argue for a middle-Wisconsin, or earlier, time of human entry into North America. New experimental data demonstrate that identifications of Pleistocene bone artifacts
-Wisconsin dates associated with some of the finished tools, and human and dog bones from Beringia are open to question. The lack of credible dates on these artifacts raises doubt about the model of human colonization of Beringia, developed in the 1960s
Sea-level data for parts of the Bering-Chukchi shelves of Beringia from 19,000 to 10,000 B.P.
Amérique du Nord ; Arctique ; Asie ; Beringia ; Datation radiocarbone ; Gphy ; Géographie physique ; Holocène ; Mer de Bering ; Niveau marin ; Pacifique, îles ; Plate-forme continentale ; Pléistocène supérieur ; Quaternaire marin
Sea-level changes in Beringia are especially significant because they affect the migration of land plants and animals between Asia and North America, and marine plants and animals between the Pacific and Arctic oceans. Previous studies of scores
points is proposed as the basis for a regional sea-level curve for central Beringia. Constraints on the data must be noted, however, by anyone using them.
Late Quaternary lacustrine pollen records from Southwestern Beringia
Sediment cores from three lakes in the Upper Kolyma region, northeast Russia, provide the first well dated continuous record of late Quaternary vegetation change from far southwestern Beringia. This new record provide important insights
Diet and co-ecology of Pleistocene short-faced bears and brown bears in eastern Beringia
This paper presents stable carbon and nitrogen isotope data obtained from the fossil bone collagen of late Pleistocene short-faced bears and brown bears, and bone collagen from modern brown bears in eastern Beringia. The data elucidate many
Late Pleistocene climates of Beringia, based on analysis of fossil beetles
Thirty-one fossil beetle assemblages from central and eastern Beringia (Alaska, the Yukon Territory, and the now-submerged Bering Land Bridge) have yielded seasonal temperature estimates for the interval 43,550-9250 C 14 yr B.P. Estimates
Hard times in Beringia: a short note in Quaternary coastlines and marine archaeology: Towards the prehistory of land bridges and continental shelves.
Alaska ; Amérique du Nord ; Arctique ; Beringia ; Biogéographie ; Détroit de Béring ; Géographie des régions polaires ; Histoire du peuplement ; Mer de Bering ; Niveau marin ; Pacifique, îles ; Paléo-environnement ; Paléobiogéographie
Phénomène paléogéographique et catastrophe géologique : la Beringia à la fin du Pléistocène supérieur
Reconstitution paléogéographique de ce massif de terre ferme, apparue périodiquement entre la Čukotka et l'Alaska en les réunissant en un vaste continent, la Beringia. Le pont de Bering a été détruit très rapidement, d'où une transformation des
masses d'eau entre le bassin Arctique et le Pacifique Nord. Au Pléistocène l'assèchement du détroit de Bering et la formation de la Grande Beringia se sont produits au moins 4 fois et peut-être même plus. Un important matériel portant sur les 20 000
dernières années permet de reconstituer l'époque de l'existence de la dernière Grande Beringia et de sa disparition, qui a commencé dès la fin du Pléistocène et s'est terminée au début de l'Holocène. Une grande partie de terre ferme a été envahie par la mer
Bergs, barriers and Beringia: reflections on the peopling of the New World in Quaternary coastlines and marine archaeology: Towards the prehistory of land bridges and continental shelves.
Amérique du Nord ; Archéologie préhistorique ; Arctique ; Beringia ; Détroit de Béring ; Glaciation ; Géographie des régions polaires ; Histoire du peuplement ; Industrie lithique ; Mer de Bering ; Pacifique, îles ; Peuplement ; Pléistocène
Four stages of the peopling of Beringia can be singled out: between 70,000 and 50,000 yr B. P., more than 27,000 yr B. P., between 15,000 and 13,000 yr B. P. and 11,000 to 10,000 yr. B. P. (P. A. Pirazzoli).
The northwestern Alaskan records, when combined with others from eastern Beringia (Alaska and adjacent Canada), suggest important regional variation in vegetation and climate histories during the Duvanny Yar (25,000 - 14000 Yr B.P.) and Birch
The AA. use a paleoecological record of eastern Beringia , the Populus subzone, to illustrate the range of issues that must be considered in interpreting radiocarbon-dated paleoenvironmental data. In particular, the relative merits of several
from the Grandfather core. The unique features of these pollen records emphasize the spatial complexity of late Quaternary vegetation and climate history in eastern Beringia.