05-BGW-EG3 Magnetic Exploration

This module covers all aspects required to understand, measure and interpret magnetic anomalies of the geological subsurface: magnetic potential theory, rock magnetism, aero- and ground magnetic methods, computerized processing and 2D/3D forward modelling of magnetic survey data. We start out in the field with a four-day survey of largely uncharted basalt dikes in Lower Franconia applying Overhauser magnetometry, susceptometry, GPS geodesy and field geology. Back in Bremen, course participants are first familiarized with essential fundamentals, computational methods and specialized software (Geosoft Oasis Montaj), before they process, visualize and investigate their own survey data.

1) realize, consider and predict, how subsurface materials and structures, geomagnetic settings and magnetic field geometry contribute to observed magnetic anomaly patterns
2) have an insight into the applications, prospects and limitations of magnetic exploration in structural geology, mineral resource exploration, archeology and UXO detection
3) plan and execute problem-specific ground magnetic survey campaigns in complex geological terrain by skillfully combining divers magnetic and gedodetic instrumentation
4) process, visualize, analyze, evaluate and report magnetic survey datasets with competent use of state-of-the-art processing and modelling techniques and software packages

Grundlagen Angewandte Geophysik / Principles of Applied Geophysics

Course Type 1: Lecture, Exercise (L+E) 2.0 SWS ( 28.0 h)

Course Type 2: Field Exercise (F) 3.0 SWS ( 42.0 h)

Tutorial(s): -

70.0 h presence time
30.0 h self-study
80.0 h exam workload

180 h total workload

module exam

exam elements: 1
SL: 0

100 % project exercise report

Team report with individualized tasks and chapters covering survey results, data processing and structural interpretation

1) Gravity and Magnetic Exploration, W.J. Hinze, R.R.B. von Frese & A.H. Saad, Cambridge Press, 512 S.
2) Applied Geophysics, W.M. Telford, L.P. Geldart & R.E. Sheriff, Cambridge University Press, 770 S.
3) Powerpoint scripts und special publications made available in Stud.IP
4) Die Haßberge und ihr Vorland, G. Geyer & H. Schmidt-Kaler, Verlag Dr. Friedrich Pfeil, 128 S.

An obligatory preceding ground magnetic survey campaign in Haßberge (Lower Franconia) is scheduled during 4 days (+ 2 days for travel and logistics) in every early-mid March