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26-Feb-2016 13:49

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Calcareous nannofossils have provided a powerful biostratigraphic tool since the 1950's and 1960's, when several milestone papers began to highlight their potential use in dating Cenozoic sediments and rocks.

The geomagnetic polarity time scale has proven to be a useful independent reference system for dating the biochronology of continental deposits in North China.

Long composites of successive microfaunas, with faunal correlation at times of low endemism, and age estimation through paleomagnetic correlation, yield robust biochronologies that are well constrained in time.

A combination of argon–argon dating and magnetic stratigraphy allows a direct temporal comparison of terrestrial events with climate change and mass extinctions.Here, we present a new calcareous nannofossil biozonation for the Paleogene Period, which is based on biostratigraphic data collected during the past 30 years.



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