TY JOUR TI The Mesozoic-Cenozoic boundary: Paleomagnetic characteristic KW Mesozoic-Cenozoic boundary KW geomagnetic field KW paleointensity JO Russian Journal of Earth Sciences AU Pechersky, D.M. AU Garbuzenko, A.V. PY 2005 IS 7 PB Geophysical Center of the Russian Academy of Sciences