EarthRef.org Reference Database (ERR) -- Tauxe & Gallet 1991

We investigate the problem of evaluating the reliability of a magnetostratigraphic section using a jackknife resampling scheme. We define a parameter, J, as the slope relating the percentage of polarity zones of a sampled section remaining after random deletion of sites increasing in proportion to a total of 20% of the initial collection. So defined, J quantified the dependence of magnetostratigraphic record on the distribution of sampling sites. Based on simulated magnetostratigraphic sections, J was found to be an indicator of the approximate percentage of polarity zones in the original reference sections that were recovered in the sampled section. J will perhaps be most helpful as a guide to investigators as to whether further sampling would provide useful information as well as to the non-paleomagnetist user of black and white interpretive polarity logs as an estimate of the reliability of a given section. ¿American Geophysical Union 1991 We investigate the problem of evaluating the reliability of a magnetostratigraphic section using a jackknife resampling scheme. We define a parameter, J, as the slope relating the percentage of polarity zones of a sampled section remaining after random deletion of sites increasing in proportion to a total of 20% of the initial collection. So defined, J quantified the dependence of magnetostratigraphic record on the distribution of sampling sites. Based on simulated magnetostratigraphic sections, J was found to be an indicator of the approximate percentage of polarity zones in the original reference sections that were recovered in the sampled section. J will perhaps be most helpful as a guide to investigators as to whether further sampling would provide useful information as well as to the non-paleomagnetist user of black and white interpretive polarity logs as an estimate of the reliability of a given section. ¿American Geophysical Union 1991