2011 GSA Annual Meeting in Minneapolis (912 October 2011)
Paper No. 1-11
Presentation Time: 11:00 AM-11:15 AM

KEWEENAW BOULDER GARDEN—A REVITALIZED KAME TERRACE ON CAMPUS, USED AS A TEACHING LABORATORY

ROSE, William I., Geological and Mining Engineering and Sciences, Michigan Technological Univ, 1400 Townsend Dr, Houghton, MI 49931, raman@mtu.edu

Michigan Tech’s campus is built on a kame terrace with an age of approximately 10ka. The lag boulders were removed when the campus was originally constructed but we have since found and replaced them with boulders from outwash quarries of the region. The boulder “garden” is thus constructed from carefully selected boulders that represent the range of mid continent rift lithologies. These include fluvial redbed sandstones, alluvial fan conglomerates, rhyolites and continental tholeiite basalt lavas which exhibit broad textural variations including mineralized zeolite and prehnite pumpellyite facies amygdaloids, segregation cylinders and pegatititic lenses, and ophitic textured flow interiors. Boulders are smooth and well exposed surfaces which expose large areas of the rock, similar to a good outcrop. Together the boulder garden represents all the main rift rocks in one place. All boulders are easily accessible by people. As a lab facility there are a variety of exercises that can be done (identification of amygdaloidal minerals, basalt flow anatomy, identification of up and down directions in sediments and lava flows, reading the rocks of the rift).

In addition to the geological teaching applications the garden introduces geological beauty and awareness to the central campus. It creates an environment filled with information about both the glacial and rift geologic history where all university community see it every day.

http://www.geo.mtu.edu/~raman/SilverI/Boulder_Garden

2011 GSA Annual Meeting in Minneapolis (912 October 2011)
General Information for this Meeting

Handouts:

Session No. 1
Geoscience Education I: Field and Place Based Approaches to Geoscience Education
Minneapolis Convention Center: Room 208AB
8:00 AM-12:00 PM, Sunday, 9 October 2011

Geological Society of America Abstracts with Programs, Vol. 43, No. 5, p. 25

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