Department of Earth Science |Northeastern
Daily Objectives #16
(March 12, 2009)
end of today's class, you should be able to do the following:
and Cross Sections
Explore the questions, issues, and difficulties
that commonly arise in constructing hydrogeologic cross sections.
Gather and explain the data on the subsurface conditions of the
w Explain your
cross section illustrating the hydrostratigraphy of the study area.
Describe the hydrostratigraphy of the rock
aquifers of northeastern Illinois, using the case studies presented in your
Describe the bedrock topography in the study
area, explaining the relative positions of the sandstone and limestone.
w List the three major
environments of deposition of glacial materials, describe the sedimentary
deposits they leave, and tell whether each is most likely to be an aquifer or an
Using Geologic Maps
- Locate our study area on geologic maps
showing Quaternary deposits, bedrock geology, the Stack-Unit Map, and the
glacial sediment thickness map.
- Read and record the information given
by each map, and use it to interpret the geology of the study area.
- Explain the connection between the
geologic origin of the materials at the site to the hydrostratigraphy.
Flow Systems (partly a review from previous
- Recognize and
hydrostratigraphic units in your cross section.
- Explain the
lithostratigraphic units and hydrostratigraphic units.
- Describe how to
hydrostratigraphic units when they involve two (or more)
units, or when they involve only a portion of a lithostratigraphic unit.
Department of Earth Science | Northeastern Illinois University
Copyright 2009 Laura L. Sanders.
Last updated March 12, 2009.