Development of a Method for Exploring Low-Reflectance Areas Through the Combined Use of Different Geophysical Methods Taking the North-West German Basin as an Example
(English)
Please choose your delivery country and your customer group
The main purpose of this research program was to find a concept for an efficient exploration on mineral resources and hydrocarbons in areas with poor quality in reflection seismics. The North-West German Basin was selected as an example because there are many geophysical surveys especially results of gravimetric and magnetic measurements. On the base of the existing results main emphasis was laid on the combined interpretation of results of different geophysical methods. Modern techniques in geophysical data processing were used on a large scale. In this project a new interpretation of the gravity Reichsaufnahme has been carried out, whereas the influence of the sediments down to the Zechstein was approximately eliminated. The results of this interpretation differ from those of the Reichsaufnahme. This might be caused mainly by the geologic conditions beneath the Zechstein (Lower Permian). A basin-study was made by a synopsis of gravity and aeromagnetic results, indicating the history of this basin. Modelling of aeromagnetic results as well as interpretation of deep reflection observations in North-West Germany were used as additional information. Likewise, problems and questions were investigated about the effects of folded carboniferous strata on the interpretability of reflection seismic data in the southern part of Lower Saxony. The main result derived from gravimetric, magnetic and seismic data is a conception of the configuration of the North-West German Basin which differs from many existing theories. Thus a general way is indicated to explore similar areas which cannot be explored by seismic work only. (ERA citation 09:015189)
Development of a Method for Exploring Low-Reflectance Areas Through the Combined Use of Different Geophysical Methods Taking the North-West German Basin as an Example