Biga Yarımadası Havadan Manyetik Verilerinin İncelenmesi ve Yüzey Jeolojisi ile Korelasyonu.


65. Türkiye Jeoloji Kurultayı, Ankara, Turkey, 2 - 06 April 2012, pp.600-601

  • Publication Type: Conference Paper / Summary Text
  • City: Ankara
  • Country: Turkey
  • Page Numbers: pp.600-601
  • Çanakkale Onsekiz Mart University Affiliated: Yes


Airborne magnetic anomalies of Biga Peninsula were investigated by using GMinterp software which is MATLAB based consisting of a series of linked functions along with a graphical user interface and is developed for data processing and modeling of potential field data. Airborne magnetic data were collected with 1-2 km profile intervals and with about 70 m sampling from 625 m above the ground surface by MTA. The data covers an area of 120 x 180 km and were gridded with 2 km sampling interval. Regional anomaly map was approximated by means of element shape functions used in finite element method and then residuals were computed. In order to determine the lithological changes, boundary analysis technique was performed to residual magnetic anomalies. Firstly magnetic data were transformed to pseudo-gravity data by using 550 and 40 for inclination and declination angles, respectively. Then, the total horizontal derivatives of pseudo-gravity data were estimated by using simple finite difference method. Finally the locations and magnitudes of the maximum horizontal gradients of pseudo-gravity data were determined. Analyzing the resulting maxima map together with the geological map (1/500.000) showed that the locations of maxima indicate the boundaries of plutonic rocks having high magnetization intensity. The results also point out that anomaly separation (regional residual separation) and boundary analysis modules in GMinterp software can be used for this kind of lithologies.