Аннотация:The present paper summarizes results of the studies on the intensity of geomagnetic
field in the (167 - 23) Ma interval by sedimentary rocks of the Russian Plate and adjacent territories.
The joint analysis of the data paleointensity obtained by sedimentary and thermomagnetized (from
PINT12) rocks within this temporal interval is conducted. It is shown that the changes of the
paleointensity were occurred chaotically. Alternating bursts and periods of quiet regime of the
geomagnetic field are typical for intermittent processes and is a characteristic of the geological interval
Jurassic – beginning of Paleogene. The distributions of the paleointensity corresponding to different
intervals of geologic time were investigated. It is revealed that the cumulative distribution function
(CDF) of the paleointensity values is best approximated by a power function. The indices of the power
functions (α) varied depending on geologic time intervals. The analysis of the paleomagnetic data
suggests that the medium in which the geomagnetic field is generated is turbulent. Turbulence in the
Earth’s liquid core is enhanced in the Cretaceous compared with Jurassic and Paleogene.