T42 Sedimentary Geology of the Next Generation: Student Posters (Posters)
Sunday, 18 October 2009
9:00 AM - 6:00 PM
Hall A
DETERMINATION OF PALEOLATITUDE OF THE MISSISSIPPIAN MICHIGAN FORMATION: JACKSON, MICHIGAN
Paper number: T42-28
Program: Technical Sessions
Time: 9:00 AM – 6:00 PM
Authors
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James L. BuzzellGrand Valley State University, Allendale, MI
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J.G. BarrGrand Valley State University, Allendale, MI
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Stephen A. ZdanGrand Valley State University, Allendale, MI
Abstract
We measured detrital remanant magnetism induced by a past magnetic field(s) within shale units of the Mississippian Michigan Formation. One inch cubes were cut from a core from a borehole in Jackson, Michigan, and tested using a spinner magnetometer and alternating field demagnetization. We used a spinner magnetometer to infer paleolatitude and to test our hypothesis of detrital remanent magnetism (induced during deposition) as the carrier of remanent magnetism. Data collected from a suite of samples show a paleo-inclination (dip) of -11.9° ± 46° which corresponds to a paleolatitude of approximately 6° south of the equator. A secondary overprint of magnetism shows an inclination of 67.9° which translates to a modern latitude of 51° North.