Revised determination of the paleointensity in the cretaceous from the collection of A.S. Bol’shakov and G.M. Solodovnikov

• Published in: Izvestiya. Physics of the solid earth Vol. 44; no. 10; pp. 816 - 821
• Main Authors: Shcherbakova, V. V., Zhidkov, G. V., Shcherbakov, V. P.
• Format: Journal Article
• Language: English
• Published: Dordrecht SP MAIK Nauka/Interperiodica 01-10-2008; Springer Nature B.V
• Subjects: Cretaceous; Earth and Environmental Science; Earth Sciences; Geochemistry; Geomagnetic field; Geophysics; Geophysics/Geodesy; Magnetic fields; Mesozoic; Paleontology; Rocks; 91.25.Ng
• ISSN: 1069-3513; 1555-6506
• DOI: 10.1134/S1069351308100091

A large volume of data on the paleointensity
H
an
obtained by A.S. Bol’shakov and G.M. Solodovnikov is ignored in modern reconstructions because the authors did not indicate whether they used the check-point procedure for the detection of chemical alterations in rocks associated with determination of
H
an
. The paper presents new values of
H
an
determined by the Thellier-Coe method with the use of the checkpoint procedure from samples of the Armenian collection of Cretaceous rocks used in published studies of Bol’shakov and Solodovnikov. The new results are close to the published ones and point to a small value of the geomagnetic field in the Cretaceous, thereby corroborating Bol’shakov-Solodovnikov’s hypothesis on a low paleofield in the Mesozoic. Our study of samples of the collection studied confirms the reliability of Bol’shakov-Solodovnikov’s determinations of
H
an
.