...IUGS International Subcommission on Stratigraphic Classification; IUGS/IAGA Subcommission on a Magnetic Polarity Time Scale Abstract No Abstract Available. Geological Society of America 1979 ...

... are uncertain due to the paucity of reliable data (grey areas) and six intervals are undefined because of the low data quality (barred area) ( Fig. 9 ). The calibration of the magnetic zonation with the global paleomagnetic time scale (GPTS) was attempted on the basis of the identified foraminifera...

... data are yet available to allow specific correlation of these anomalies (or for that matter even the ridge-flank anomalies younger than anomaly 33 west of the magnetic smooth zone) with the geomagnetic-polarity time scale. Only the width and position of the smooth zone give us confidence in the age...