Relevance of Manganese in the Ocean for the Climatic Cycles in the Quaternary

It is widely accepted that there is a relationship between ice volume and the solar insolation in summer in the northern hemisphere. The Earth''s glacial cycles are driven by cyclic changes in the Earth''s orbital elements. This conclusion is based on the strong coherence between the approx. 20000 and 40000 year spectral components of ice volume and insolation (Milankovitch-curve) records. These f...