Geomagnetic anf climatic variability reflected by ¹⁰Be during the Quaternary and late Pliocene

We present continuous ¹⁰Be data extending to 3.5 Ma that show strong response to the Earth's magnetic field shielding. We find a prominent enhancement in ¹⁰Be at geomagnetic reversals and in particular at the Brunhes/ Matuyama geomagnetic boundary and several geomagnetic excursions during the Brunhes Chron. Similarity in ¹⁰Be fluxes of Holocene to Eemian period occurs during oxygen isotope stages 11 through 13. According to our data climatic patterns of these periods may likely represent exception rather than the rule during the last million years. We suggest that the interplay between the geomagnetic field shielding and solar activity had effectively regulated paleoclimatic attenuation.