
Two mechanisms are described here, which generated the two main types of palaeoclimates – warm and cold – having affected the whole Earth from the post-Mesozoic cooling and the creation of the Gulf Stream (the latter having imposed alternations of warm periods and glaciations in the Northern Hemisphere since the Pliocene times.
Palaeoclimates, isotopes, Gulf Stream, glaciations, insolation variations, tectonics, volcanoes, ocean