New early Jurassic paleopole from France and Jurassic apparent polar wander

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Abstract

A new early Jurassic paleopole for stable Europe obtained from a doleritic dyke system in Brittany, France is given at latitude 61°N and longitude 79°E (K = 36 and A95= 10.2°) based on seven equivalent sites and more than a hundred samples demagnetized by alternating field and thermal treatments (D = 41°, I = 62°, k = 66, α95= 7.5°). Radiometric datings provide ages between 190 and 200 Ma. This result represents the first indication obtained from European igneous data for a very westerly cusp in the Apparent Polar Wander Path around 200 Ma. The European data also tend to support the hypothesis of a higher latitude track for the Jurassic APWP as already proposed from North American data. © 1993.

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Sichler, B., & Perrin, M. (1993). New early Jurassic paleopole from France and Jurassic apparent polar wander. Earth and Planetary Science Letters, 115(1–4), 13–27. https://doi.org/10.1016/0012-821X(93)90209-R

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