| sits astride the eastern continental drainage
divide, encompassing some of the most complex and interesting geology
and ground-water issues found anywhere in the eastern United States.
The rocks and sediments beneath the surface span more than 400 million
years of geologic time and reveal a fascinating history of environmental
change that ranges from reefs formed in ancient tropical seas to
catastrophic floods of frigid water pouring from ice sheets thousands
of feet thick. The geologic history is intimately woven into the
fabric of human settlement and modern life, and ultimately is the
reason that Fort Wayne was founded as the "Summit City." Virtually
every aspect of modern life is influenced in some way by the geologic
underpinnings of the county, from the ground water that provides
most of the region's water, to the limestone bedrock that supplies
the basic building materials for most infrastructure. This Web site
provides a virtual tour of the physical underworld—what it is,
how it got there, and why it is important.
This Web site was completed by the Indiana Geological Survey and focuses on the geology of Allen County in northeastern Indiana. The Web site includes an Internet map server (IMS) as well as illustrations and educational summaries/discussions of geologic maps, terrain images, and databases which complement the IMS. Primary geologic data available from the site include the lithologic reports and gamma-ray logs from selected wells. Users of these products include the general public and water- and mineral-resource, environmental, planning, and public health professionals.
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