Rural H Historic c Struct tural S Survey - Will County Land Use

Wiss, Jann ney, Elstner Associates, A
Inc c.
Section 15
of Wilmin ngton Townsh hip. Althoug gh much of tthe
townshipp
has gently rrolling
terrainn,
the
creeks hav ve defined low w valleys, par rticularly in th he western paart
of the towwnship.
First Nations
in the Illinois Reg gion
Human ha abitation of the t North Am merican contin nent from thee
Paleo-Indiaan
culture hass
been dated to the
end of the e last glacial advance a (abou ut 15,000 to 12,000 years ago). Increassing
warmth ttoward
the cloose
of
the Pleisto ocene Era cau used the melting
and disap ppearance of tthe
ice sheet iin
approximaately
9000 B.CC.
The
arrival of the First Nati ions, or Nativ ve Americans,
in the regionn
between thee
middle Misssissippi
Valleey
and
Lake Mic chigan appear rs to date from m the earliest t period folloowing
the retrreat
of the poolar
ice sheet.
This
time is kn nown as the Paleo-Indian
P Period, when n peoples in tthe
region brriefly
occupieed
campsites while
subsisting g on deer, sma all mammals, nuts, and wil ld vegetables and other plaants.
Illustrated above a are the mo oraine systems in n northeastern Illinois. Il Most of FFlorence
Townsship
lies west of tthe
Valparaiso
Morainic Sy ystem in the Lake e Wauponsee ou utwash area; the Rockdale moraine
crosses the ccenter
of the towwnship
from nortthwest
to southeast t. (H.B. Willman n, Summary of th he Geology of th he Chicago Area, , Illinois State GGeological
Surveey
Circular 460
(Urbana, Ill linois, 1971), 43.)
Page 6
Will CCounty
Rural Hisstoric
Structural Survey
Florence Toownship