High resolution global paleointensity stack since 75 kyr (GLOPIS-75) calibrated to absolute values

We have obtained a global relative paleointensity stack using a selection of published records from marine cores with sedimentation rates in excess of 7 cm/kyr, from the North and South Atlantic Oceans, the Mediterranean and the Indian Ocean. After correlation of the cores, the results were stacked using a new approach to minimize possible local disturbances. This relative paleointensity stack extends from 75 kyr to about 10-12 kyr BE This new stack presents a larger overlap than previously published records with the archeomagnetic/volcanic absolute paleointensity determinations that are all well constrained in age for the period 0-12 kyr. This allows calibration to absolute values, but additional work is still necessary on this point. Superimposed to the long-term features, rapid fluctuations are identified indicating that GLOPIS-75 has attained-high global resolution. The duration of the Mono Lake and Laschamp excursions can be estimated to about 1500 years consistently with the suggestion that excursions are shorter than reversals.