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HIGHLIGHTS
New Drill Holes Aid Aquifer Mapping and Extend
Boundaries of Coal Seam
As part of research undertaken to study the Mahomet Aquifer, funded
by the Illinois American Water Company, geologists from the
Quaternary Geology Section,
Hydrogeology Section,
and Coal Section at the
Illinois State Geological Survey assisted in the retrieval of
sediment and bedrock cores during the drilling of groundwater
monitoring wells in Champaign and Piatt Counties. Information
collected from drilling these boreholes will improve geologic maps
being developed for the area and provide a better understanding of
the subsurface geology in east-central Illinois.
The drilling of three new boreholes on property owned by Orr Farms
Incorporated, Somer Township, and Stanton Township provided
additional information about the glacial history and formation of
the Mahomet Bedrock Valley. From the cores, sediments were identified
that had been deposited under and in front of glaciers from centers of
accumulation over northeastern Canada, possibly associated with the
oldest glacial advance ...more on the new drill holes
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PUBLICATIONS
Windy City Weekend
Visit the state's premier city this summer and
enjoy the historical, cultural, and geological
attractions of Chicago. Consider taking one of
our great guidebooks with you, or read one before
you head out. Here are a few day trips you might
like to take (even if you're an armchair
traveler):
The Chicago River—A Legacy of Glacial and Coastal Processes
(Guidebook 37, 2009, 32 pp., $12.00). This
guidebook is designed to accompany a day-long
driving tour near and within the Chicago area. The
book presents an overview of the Chicago River's
geological framework and describes five select
locations that are important to the river's
geologic history.
"Make No Little Plans": Field Trip Guidebook for the American Shore & Beach Preservation Association 2008 National conference, Chicago, October 15–17, 2008
was written as part of the year-long celebration
...more windy city weekend
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HIGHLIGHTS
Geophysicist Organizes Session on New
Approaches in Near-Surface Geophysics
The Illinois State Geological Survey, together
with Green Engineering Company, organized and
conducted a scientific session, "Advancing the
Use of Electrical Resistivity and Electromagnetic
Methods for Near-Surface Applications," at a recent
scientific meeting sponsored by the American
Geophysical Union (AGU), Canadian Geophysical Union,
Canadian Exploration Geophysical Society, and AGU
Near-Surface Geophysics Focus Group. The session
was held on May 27, 2009, in Toronto, Canada,
during the AGU Joint Assembly: The Meeting of the
Americas (http://www.agu.org/meetings/ja09/ja09-sessions/ja09_NS31A.html).
Electrical resistivity and electromagnetic methods
can be used to obtain information about subsurface
structure, properties, and processes for a wide
range of near-surface applications. Over the past
decade, significant advancements have occurred in
all aspects of acquiring and interpreting field
data. Invited presentations described theoretical,
numerical, laboratory, and field studies that
...more highlights
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