1. New interpretation of the old ∆z magnetic anomaly map of hungary
Ágnes Király
Eötvös Loránd University, Departement of Geophysics and Space Sciences
Supervisor: Ferenc Horváth; Eötvös Loránd University, Departement of Geophysics and Space Sciences
ISZA 2012

2. Ágnes Király: New interpretation of the old ΔZ anomaly map of Hungary
Contents
Introduction (Rock magnetism, possible source rocks in the territory of Hungary)
Earlier explanations
The ΔZ anomaly map of Hungary
Comparing geological and magnetic data
Magnetic modeling
Results & conclusions 2

3. Introduction Rock magnetism
Ágnes Király: New interpretation of the old ΔZ anomaly map of Hungary
Introduction
Rock magnetism
Magnetization is a vectorial sum of induced and remanent magnetization
Induced magnetization is generated by the external (Earth’s) magnetic field: Jind=κ∙T, proportionality factor (κ ) is the magnetic susceptibility
Remanent magnetization is generated in ferromagnetic minerals during cooling and solidification of magmatic rocks
Main sources of magnetic anomalies are related to magmatic rocks
In continental area:
Remnants of igneous activity
Obduction of ancient oceanic crust
Exhumed mantle peridotites in extensional terranes 3
Based on Lowrie, 2007

4. Magnetic source rocks in the territory of Hungary
Ágnes Király: New interpretation of the old ΔZ anomaly map of Hungary
Magnetic source rocks in the territory of Hungary
MÁFI, 2010 4

5. ΔZ magnetic anomaly map of Hungary ( ELGI, 1963)
Ágnes Király: New interpretation of the old ΔZ anomaly map of Hungary
ΔZ magnetic anomaly map of Hungary ( ELGI, 1963) 5

6. Results of early explanation (Posgay, 1967)
Ágnes Király: New interpretation of the old ΔZ anomaly map of Hungary
Results of early explanation (Posgay, 1967)
Prekambriumi és paleozoos hatók
Mezozoos hatók
Paleogén hatók
Miocén hatók
Pliocén-pleisztocén hatók
Ismeretlen korú hatók
Posgay, 1967 6

7. ΔZ magnetic anomaly map of Hungary (ELGI, 2006)
Ágnes Király: New interpretation of the old ΔZ anomaly map of Hungary
ΔZ magnetic anomaly map of Hungary (ELGI, 2006)
ELGI, 2006 7

8. „Collage” of Central European magnetic anomaly maps
Ágnes Király: New interpretation of the old ΔZ anomaly map of Hungary
„Collage” of Central European magnetic anomaly maps
AUT: ∆T (AHL et al., 2007);
SVK: ∆T (KUBEŠ et al., 2010);
ROM: ∆Z ( IONESCU et al., 2009);
HUN: ∆Z (ELGI, 2006) 8

9. Correlation with tectonic lines
Ágnes Király: New interpretation of the old ΔZ anomaly map of Hungary
Correlation with tectonic lines 9
Tectonics from Horváth et al., 2006

10. Magnetic susceptibility data from Hungary and the surrounding areas
Ágnes Király: New interpretation of the old ΔZ anomaly map of Hungary
Magnetic susceptibility data from Hungary and the surrounding areas 10

11. Geological sections in the map
Ágnes Király: New interpretation of the old ΔZ anomaly map of Hungary
Geological sections in the map
ELGI,2006 11

12. Ágnes Király: New interpretation of the old ΔZ anomaly map of Hungary12

13. Ágnes Király: New interpretation of the old ΔZ anomaly map of Hungary13

14. Magnetic modeling: Robust model for the Békés Basin
Ágnes Király: New interpretation of the old ΔZ anomaly map of Hungary
Magnetic modeling: Robust model for the Békés Basin 14

15. Thank you for your kind attention!
Ágnes Király: New interpretation of the old ΔZ anomaly map of Hungary
Thank you for your kind attention! 15