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The Peopling of the Americas

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Title: The Peopling of the Americas Author: khi Last modified by: hrsbtech Created Date: 3/6/2003 8:53:34 AM Document presentation format: On-screen Show – PowerPoint PPT presentation

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Title: The Peopling of the Americas


1
The Peopling of the Americas
  • What different views exist regarding origins?
  • What are traditional archaeological theories of
    origins?
  • How are these archaeological theories being
    challenged?
  • What are some of the ethical concerns in
    researching origins?

2
Two Views of Origins
  • Archaeological
  • Before 1990 archaeologists and historians agreed
    the first inhabitants came from Asia across the
    Bering Strait when sea levels were lower (13 500
    years BP)
  • Since 1990 many questions surfaced contradicting
    this theory Shared plant life, structures,
    diversity of native languages and so on fostered
    this questioning

3
Two Views of Origins
  • Aboriginal Perspectives
  • Many First Peoples see Canada as their homeland
  • They believe they have been here since Time
    Immemorial.
  • Aboriginal creation stories vary, but share one
    thing in common Aboriginal peoples have no bond
    with any other place

4
Gathering Archaeological Evidence
  • Archaeologists use artifacts as evidence to help
    understand past societies
  • Artifacts can deteriorate with age therefore the
    method known as radiocarbon dating is used
  • This process measures the age of carbon in
    artifacts and therefore tells how old an artifact
    is
  • Tools, utensils and weapons are all artifacts
    archaeologists use to learn many things about the
    way people lived

5
Gathering Evidence
  • Evidence of Paleo-Indian is found in their unique
    tools
  • DNA analysis is now being used, however is quite
    expensive

6
Traditional Archaeological Theory
  • The earliest evidence came in the form of spear
    points
  • Style of spear points determined age and culture
  • The Clovis Period
  • 11 500 11 000 BP
  • Many researchers believe hunters used spears to
    hunt some mammals into extinction
  • Archaeologists believed in this model so much
    they virtually stopped digging any deeper

7
Traditional Archaeological Theory
  • The Plano Period
  • 10 000 7 000 years BP
  • Large mammals like the camel and mammoth
    disappeared around this time
  • During this time the Plano peoples descendants
    of Paleo-Indian began hunting bison
  • Change in spear and arrowhead design came with
    the Plano peoples

8
Linguistic Evidence
  • Archaeology does not provide all the answers
  • Linguistics show how language of cultures evolves
    over time
  • Language can explain culture, its interrelations
    and its differences
  • Linguistics shows that the more diversity there
    is in language the more time has passed
  • North America is one of the most linguistically
    diverse areas suggesting that First Peoples
    arrived here long before the Clovis period

9
Physical Anthropology
  • Study past by examining human remains (CSI
    Historians)
  • Believe there were several migrations of people
    to the Americas
  • They also believe early peoples came from
    different places at different times

10
Theories of First Peoples Origins
  • The Land Route
  • Geologists believe during the last Ice Age
    (Pleistocene Era) sea levels were lower across
    the Bering Strait (between Alaska and East Asia)
  • It is widely believed that many peoples may have
    migrated across this land bridge into N.A.
    between 13 500 50 000 years BP

11
A Land Route
  • Geologists believe that during the last Ice Age,
    called the Pleistocene Era, sea levels were lower
    across the Bering Strait than they are today.
  • A vast grassy plain called Beringia, or land
    bridge linked what is now called Siberia with
    Alaska.
  • It is believed that at least 13,500-50,000 years
    ago early peoples migrated across to North
    America.
  • Similar fossils discovered on both continents
    prove that large grazing animals bison,
    caribou, horses, mammoths and musk oxen migrated
    across. Early peoples probably followed the
    herds of animals.
  • A stone tool radiocarbon dated 10200 BP makes it
    possible that a Pacific Coastal route was
    taken.
  • BP Before Present

12
Theories of First Peoples Origins
  • A Pacific Route
  • This theory suggests people first came to N.A. by
    watercraft over the Pacific Ocean
  • There has been little archaeological exploration
    in this area due to the belief it was covered by
    glaciers

13
A Pacific Route
  • Fossil evidence of sea and land mammals and other
    wildlife dated 16800 years BP has been found
    along the Northwest Coast
  • May have inhabited South America first then moved
    on to North America
  • Genetic links

14
Theories of First Peoples Origins
  • An Atlantic Route
  • Both land bridge and Pacific theories are
    challenged by researchers who argue that early
    Asians didnt have technology that matched those
    of the Clovis period
  • Theyve found evidence showing more similarities
    to technology used along the Northern coast of
    Spain
  • There is also DNA evidence linking Aboriginals to
    Europeans and not Asians
  • This suggests First Peoples may have come across
    the Atlantic

15
An Atlantic Route
  • Clovis projectile points are more similar to
    Solutrean points found 16500-22000 years BP
    where what is now the Northern Coast of Spain.
  • Solutrean an ancient culture of Western Europe
    dating from 21000- 18000 years ago
  • Genetic markers linking Aboriginal Peoples to
    Europeans but not to Asians

16
  • Could be a combination of all three which would
    explain the diversity of the First Peoples of the
    Americas.
  • What do you think?

17
Case Study
  • Develop an organizer/chart comparing the theories
    of first peoples origins (p. 18). Include the
    following in your comparison
  • Brief description of the theory.
  • Outline of the evidence supporting each theory.
  • Arguments against each theory.
  • Adapted from A. Gosney
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