tranthuongbn
Posts : 45 Join date : 2010-12-29
| Subject: The Americas, or America Fri Jan 14, 2011 4:06 am | |
| The specifics of Paleo-Indian migration to and throughout the Americas, including the exact dates and routes traveled, are subject to ongoing research and discussion.[5] The traditional theory has been that these early migrants moved into the Beringia land bridge between eastern Siberia and present-day Alaska around 40,000–17,000 years ago,[6] when sea levels were significantly lowered due to the Quaternary glaciation.[5][7] These people are believed to have followed herds of now-extinct pleistocene megafauna along ice-free corridors that stretched between the Laurentide and Cordilleran ice sheets.[8] Another route proposed is that, either on foot or using primitive boats, they migrated down the Pacific Northwest coast to South America.[9] Evidence of the latter would since have been covered by a sea level rise of hundreds of meters following the last ice age.[10] Archaeologists contend that Paleo-Indians migration out of Beringia (eastern Alaska), ranges from 40,000 to around 16,500 years ago.[11][12][13] This time range is a hot source of debate and will be for years to come. The few agreements achieved to date are the origin from Central Asia, with widespread habitation of the Americas during th Extended Auto Warrantyseo consultant | |
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lunamoonfang
Posts : 135 Join date : 2010-11-28
| Subject: Re: The Americas, or America Sun Jan 16, 2011 2:26 am | |
| The specifics of Paleo-Indian migration to and throughout the Americas, including the exact dates and routes traveled, are subject to ongoing research and discussion.[5] The traditional theory has been that these early migrants moved into the Beringia land bridge between eastern Siberia and present-day Alaska around 40,000–17,000 years ago,[6] when sea levels were significantly lowered due to the Quaternary glaciation.[5][7] These people are believed to have followed herds of now-extinct pleistocene megafauna along ice-free corridors that stretched between the Laurentide and Cordilleran ice sheets.[8] Another route proposed is that, either on foot or using primitive boats, they migrated down the Pacific Northwest coast to South America.[9] Evidence of the latter would since have been covered by a sea level rise of hundreds of meters following the last ice age.[10] master pagebrochure printing | |
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