HR: 0800h
AN: ED41A-04    [Abstracts]
TI: Gravity and Magnetics in Field and Laboratory Courses of Geophysical Engineering - A View From the Students
AU: * Santiago, L
EM: auruis@yahoo.com.mx
AF: Universidad Nacional Autonoma de Mexico, Sociedad de estudiantes de Ingenieria Geofisica, Facultad de Ingenieria, CU, Coyoacan, Mexico, 04510, Mexico
AU: Guzman, A
EM: kikari_ara@hotmail.com
AF: Universidad Nacional Autonoma de Mexico, Sociedad de estudiantes de Ingenieria Geofisica, Facultad de Ingenieria, CU, Coyoacan, Mexico, 04510, Mexico
AB: We present a summary and comments on the laboratory and field course in potential field methods in Geophysical Engineering at UNAM. The one-semester course and laboratory and field exercises are an integral part of the curricula, and we comment on the education-learning processes from the viewpoint of the students. The field exercises are designed to assist students to gain empirical knowledge about field methodologies. The experience also allows conduct work as a team, permitting a greater understanding of the professional activities in exploration of natural resources. Access to other educational experiences and resources in universities and industry, including international opportunities are thought highly beneficial. The field training area is located in central Mexico in the Altiplano. The study area is characterized by Upper Cretaceous sedimentary formations, mainly limestones and lutites within the unconformity of El Doctor and Soyatal Formations. Area is located north of Cadereyta, State of Queretaro For data acquisition, profiles oriented E-W and N-S were used. In the neighborhood of Agua Salada bridge, Bouguer gravity values increase showing local maxima. Magnetics were used to locate discordant lithological contact. Gravity and magnetic measurements were taken throughout presumed contact so that through data processing a 3-D model could be obtained. Main purpose of exercise is practical, students compare gravity and magnetic responses with geologic situation characterizing this area. On the basis of field-collected data and mapping, processing was made in the laboratory, including interpretation, through standard algorithms of 2-D modeling. Our interpretations correlate well with surface geology, photographs of outcrops, and stratigraphy. Gravity and magnetics give us a 3-D image of the subsurface and stratigraphy of study area, including structural conditions. We could observe the presence of associated magnetic dipoles at unconformity plane
DE: 0825 Teaching methods
DE: 0845 Instructional tools
DE: 0850 Geoscience education research
DE: 0900 EXPLORATION GEOPHYSICS
SC: Education and Human Resources [ED]
MN: 2007 Joint Assembly