HR: 0800h
AN: GP31A-0074    [Abstracts]
TI: Magnetic Anomaly Map of the Weaubleau Quadrangle, South Central Missouri
AU: * Shoberg, T
EM: tshoberg@pittstate.edu
AF: Pittsburg State University, Dept. of Physics 1701 S. Broadway, Pittsburg, KS 66762-7501
AU: Stoddard, P R
EM: prs@geol.niu.edu
AF: Northern Illinois University, Dept. of Geology and Environmental Geosciences, DeKalb, IL 60115-2854
AB: In the August of 2001 and May of 2005 magnetic surveys were conducted throughout the Weaubleau (pronounced Wah-blow), MO quadrangle (located approximately 90 km north of Springfield). The magnetic data were collected using a Geometrics G-856 Proton Precession Magnetometer with position and elevation data collected by a Trimble GPS Pathfinder Pro XRS unit. One hundred and ten stations were occupied in the 2001 survey with seventy-three stations occupied or, in some cases, reoccupied in 2005. These data are reduced and presented as a magnetic anomaly map of the Weaubleau quadrangle. This area has proven interesting because of an intense deformation of Mississippian and older formations whereas Pennsylvanian formations, which unconformably overly these, are largely undeformed. The cause of this deformation has alternately been attributed to meteorite impact, cryptocrystalline volcanic disturbance or widespread horizontal compression. We look for features having circular symmetry which would support an impact origin, or having a preferred linear orientation which would support a compression origin.
DE: 1500 GEOMAGNETISM AND PALEOMAGNETISM
DE: 1517 Magnetic anomalies: modeling and interpretation
DE: 1599 General or miscellaneous
DE: 5420 Impact phenomena, cratering (6022, 8136)
SC: Geomagnetism and Paleomagnetism [GP]
MN: Fall Meeting 2005