NDLI: Magnetostratigraphy of the Lodève Basin, France: Implications for the Permo-Carboniferous reversed superchron and the geocentric axial dipole

Content Provider	Springer Nature Link
Author	Evans, Michael E.
Copyright Year	2012
Abstract	New results from the La Lieude Formation now complete the magneto-stratigraphic coverage of the Permian redbeds preserved in the Lodève Basin of southern France. The majority of the samples yield reversed polarity, with a mean of declination D = 187.4°, inclination I = −0.5° (Fisherian statistics k = 44.2, α$_{95}$ = 5.6°, n = 16). Together with previously published results, these data indicate that the entire basin lies within the Permo-Carboniferous Reversed Superchron (PCRS). But the stratigraphically highest sample exhibits normal polarity, suggesting that the transition marking the end of the PCRS may be close. The unusual behaviour of the geodynamo that generates superchrons prompts one to ask if there are concomitant influences on the morphology of the field. The intersecting palaeomeridian method offers a means of pursuing this question. An updated analysis suggests that there are currently no compelling reasons for adding significant higher-order terms to the geocentric axial dipole (GAD) model for the Late Permian.
Starting Page	725
Ending Page	734
Page Count	10
File Format	PDF
ISSN	00393169
Journal	Studia Geophysica et Geodaetica
Volume Number	56
Issue Number	3
e-ISSN	15731626
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-09-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	geocentric axial dipole Permo-Carboniferous Reversed Superchron Pangea Lodève Basin Permian redbeds intersecting great Geophysics/Geodesy Meteorology/Climatology Structural Geology
Content Type	Text
Resource Type	Article
Subject	Geochemistry and Petrology Geophysics

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