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Strontium isotope stratigraphy (SIS) dating of the Bathonian regression in western Tethys (Mallorca island) by Idoia Rosales; Antonio Barnolas; José María López-García; Ana Sevillano is a Earth and Planetary Sciences article available to read on EtoBox.

What is Strontium isotope stratigraphy (SIS) dating of the Bathonian regression in western Tethys (Mallorca island) about?

The Sr-isotope stratigraphy (SIS) method has been applied to a Middle Jurassic section of Mallorca (Coves d'Artà) to improve its age control. The Middle Jurassic stratigraphy of this section, more than 220 m thick, is unique in the Mallorca island due to the existence of slope mudstones (Sa Talaia mudstones) evolving upward to a shallow oolitic platform (Coves d'Artà limestones). These slope mudstones and oolitic platform prograde over slope deposits of the Cutri Formation, without any evidence of unconformity in between. The age of this distinctive progradation to a shallow oolitic platform in Coves d'Artà is still unresolved due to the scarcity of age diagnostic fossils through the studied succession and the ambiguity of the previous information, despite being crucial information for the paleogeographic reconstructions of the Middle Jurassic of the Balearic Domain and therefore of the Western Tethys. New age estimates using the SIS method throughout the Coves d'Artà succession has allowed to obtain 87 Sr/ 86 Sr values ranging from 0.706976 to 0.707082, supporting an age compatible with the Early-Late Bathonian (~ 168.3-166.1 Ma) for the analysed portion of the succession (Upper M

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Author

Idoia Rosales; Antonio Barnolas; José María López-García; Ana Sevillano

Publisher

Springer Science and Business Media LLC

Published

2021

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)