The age of the Gura Șoimului formation from the Pleșu anticline (Moldavian Subcarpathians, Romania) based on paleoichnology

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Titus BRUSTUR Andrei BRICEAG

Abstract

The presence of Mammillichnis ichnogenus in the Gura Șoimului Formation, cropping out in the PleÈ™u Anticline axis, represents the first paleoichnological argument that confirms the Early Miocene age of this unit. This argument broadens the distribution areal from Vrancea half-window at south, to BistriÈ›a half-window at north. The regional expansion of Arthrophycus (=Sabularia) paleoichnocenosis, which is often associated with Mammillichnis, indicates that the Gura Șoimului Formation has the same age with VineÈ›iÈ™u and Podu Morii units located on the external flysch of the Eastern Carpathians (i.e., Tarcau and Vrancea nappes). Based on the paleoichnological content, the AlmaÈ™u Formation (=AlmaÈ™u Sandstone) does not represent the stratigraphic equivalent of the Gura Șoimului Formation; the AlmaÈ™u Sandstone ichnofauna is continental, while the Gura Șoimului Formation ichnofauna is marine.

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How to Cite
BRUSTUR, Titus; BRICEAG, Andrei. The age of the Gura Șoimului formation from the Pleșu anticline (Moldavian Subcarpathians, Romania) based on paleoichnology. Geo-Eco-Marina, [S.l.], v. 24, p. 119-126, jan. 2019. ISSN 1224-6808. Available at: <https://journal.geoecomar.ro/geo-eco-marina/article/view/07_2018>. Date accessed: 27 may 2024. doi: https://doi.org/10.5281/zenodo.2549934.
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