The retreat of glaciers and the original people of

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The retreat of glaciers and the
original people of the Great Lakes
Image: www. seekingmichigan.org)
The last glacial period
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Commonly called the last “ice age”
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The last of many historic glacial periods
Pleistocene period
Ice covered most of Canada and much of the
northern United States
Last of the ice retreated from our area roughly 10,000
years ago
(Image: www. cosmographicresearch.org)
(Image: www. threatsummary.forestthreats.org)
The last glacial period
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Glaciers responsible for the geologic features in
our area
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Their movement and mass carved out the basins of
the Great Lakes
Glacial melting filled the basins
Kettle lakes: shallow lakes or ponds created by
glaciers and filled with melted ice
Common across the Great Lakes area
The last glacial period
(Image: www. Geo.msu.edu)
The last glacial period
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Glaciers responsible for the geologic features in
our area
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Morraines: hills of gravel and rocks that were pushed
along by the glaciers
Many morraines were “left behind” when the ice
melted
Now are visible as hills and often follow a linear
pattern
The last glacial period
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Glacial erratic: Boulders pushed along great
distances by glaciers
Often seem strangely out-of-place
(Image: www. staudacher.blogspot.com)
The last glacial period
(Image: www. dwhike.com)
The last glacial period
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Global sea levels were lower than they are now
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Much of the world’s water was tied up, frozen in
massive glaciers
Same concept is true today – ice determines sea
levels
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If remaining glaciers and ice sheets melt, sea levels will rise
Lower sea levels meant that many landmasses were
connected
Bering land bridge
(Image: www. polartrec.com)
The last glacial period
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Bering Land Bridge
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Alaska and Russia were connected!
This is believed to be the migration route for many
prehistoric animals and people
As glaciers melted, sea levels rose again
Alaska and Russia again separated, as they are now
After the glaciers
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Around 10,000 years ago the glaciers
disappeared from our area
Gradual warming of climate
Early forests began to develop in Michigan
Boreal forests: Dominated by spruce and fir
With the forests came animals to inhabit them
(Image: www. amersol.edu.pe)
After the glaciers
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Continued warming of climate
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Forests gradually transitioned into those we see now
Boreal species remained but broad-leaf species
migrated into area
Transitional zone between northern and southern
forest types
Diversity increased
Varied habitat for a wide range of wildlife, including
humans
The Native people
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Paleo-Indian era
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12,000 years ago to 10,000 years ago
Followed the retreat of the glaciers
The original immigrants into North America
Ancestors likely crossed the Bering land bridge from
Asia into North America
The Native people
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Paleo-Indian era
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Not much is known about these people
Few archaeological remains
Likely lived in small, scattered groups
Hunted large mammals
Created stone tools out of native materials
Paleo-Indians
(Image: www. ohiohistorycentral.org)
Paleo-Indians
(Image: www. thefurtrapper.com)
The Archaic period
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10,000 years ago to 3,000 years ago
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Continued environmental changes – during this
period the landscape in Michigan took its current form
Many technological developments
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Throwing spear
Axes
Early canoes, sleds, fish-hooks, traps, etc.
Skilled hunters and gatherers
The Archaic period
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Large burial sites
Many artifacts buried with bodies
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Beads, points, knifes, etc.
Extensive copper mining
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Evidence of many shallow mine pits
Used huge rock hammers to free copper
Flattened, formed, and used for many tools
More for everyday life than for decoration
The Archaic period
(Image: www. Castlemuseum.org)
The Woodland period
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3,000 years ago to first European contact
Many new elements:
Domesticated plants for agriculture
 Trading and cultural influence from the south: The
Hopewell intrusion
 Life and culture flourished during this era
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The Woodland period
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Late Woodland era developments
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Improved diet, variety of food, and leisure time
Agriculture in the southern Great Lakes area
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Corn, beans, squash
Bow and arrow
Larger villages, with comfortable homes
Manufactured a wide range of items
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Pottery, baskets, ceramic pipes, snowshoes, sleds, canoes,
and fishing equipment
The Woodland period
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These societies generally had minimal impacts
on their environments
Relatively small populations
Well-adapted to local conditions and resources
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Agriculture in southern regions
Hunting & gathering in northern regions
Most impacts limited to small clearings in forests
The Anishinaabe culture
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“The Original People”
Ancestors of today’s Native Americans in
Michigan
Ottawa, Potawatomi, and Ojibwa: Collectively
known as the “People of the Three Fires”
Strong relationships between the three groups
Similar language of Algonquin origin
The Anishinaabe culture
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Oral history states that they migrated from areas
to the east – possibly the Atlantic coast of
Canada
Settled in the Great Lakes during the Woodland
Period
The area offered vast water resources and
abundant wild rice
Water is very sacred!
The Anishinaabe culture
The Anishinaabe culture
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Several groups continued expansion beyond the
Great Lakes, as far west as the northern plains
In our area: Ojibwa (also called “Chippewa” in
some areas)
Strong cultural, social, and economic influences
across much of Michigan
The Anishinaabe culture
Chippewa
wigwam
(Image: http://www.firstpeople.us/)
The Anishinaabe culture
Birchbark
canoe
(Image: http://www. d.umn.edu/)
The Anishinaabe culture
Wild rice
harvesting
(Image: http://www. d.umn.edu/)
The Anishinaabe culture
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Lifestyles very well-adapted to the Great Lakes
environment
Food from numerous sources, throughout the
changing seasons
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Hunting
Fishing
Gathering wild plants
Collecting syrup
The Anishinaabe culture
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Many uses for virtually all materials available
from the forests
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Medicines
Tools
Lodgings
“Art”
Spiritual significance and respect
“Manitou”
The Anishinaabe culture
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Early 1600’s: First contact with European
explorers
French
Mostly trappers rather than permanent settlers
Trading relationships established
...to be continued...
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