Abstract

In spite of extensive studies, the tectonic evolution of the most prominent geological boundary in Europe, the Trans-European Suture Zone (TESZ), remains enigmatic. End-member models are either autochthonous, requiring in situ Phanerozoic reworking of the pre-Cambrian crust, or allochthonous, including accretion of mobile Caledonian and Variscan terranes. Continent-scale Variscan right-lateral displacements along the TESZ have been also postulated. A paleomagnetic study of Upper Silurian diabases from the southern part of Holy Cross Mts. (central Poland) was undertaken to test between these models. A primary characteristic magnetization was isolated in these rocks. It passes the fold test and therefore is considered to be Late Silurian in age. The corresponding pole (12°S, 340°S) is concordant with the Ludlovian segment of the apparent polar wander path for Baltica. This result does not support hypotheses about significant post-Caledonian dextral tectonic movements along the TESZ. Tectonic movements and accretion of blocks along the SW edge of Baltica must have occurred before the latest Silurian.

Full Text
Published version (Free)

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call