The Brunhes–Matuyama epoch magnetic field evolution from the Mid–Atlantic Ridge basalts

The study of geomagnetic field paleointensity has been conducted from northern (Reykjanes Ridge) and the southern Mid- Atlantic Ridge segment (MAR) basalts with different ages by Tellier–Coe method. The Earth virtual axial magnetic dipole moment (V ADM) value was calculated and ranged between: 3.3–8.0$\times 10^{22}$ Am$^2$ for the MAR basalts and 3.7–8.0$\times 10^{22}$ Am$^2$ for basalts of the Reykjanes Ridge. The V ADM values were complied with an international data bank of the geomagnetic field intensity changes over the last 1.2myr. The age of the rocks was determined by the spreading rate of ocean crust and the analysis of the geomagnetic anomaly. It is concluded that the magnetization fluctuations of the various blocks of the magnetically active layers in the MAR rift and AGF zone features can be explained by the changes in geomagnetic field intensity with time.