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2021-08-19

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cc-by (c) Álvarez-Parra, S et al., 2021
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/179875

The early Miocene lake of Foieta la Sarra-A in eastern Iberian Peninsula and its relevance for the reconstruction of the Ribesalbes-Alcora Basin palaeoecology

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Recurs relacionat

https://doi.org/10.4202/app.00842.2020

Resum

The Ribesalbes-Alcora Basin (Castelló Province, Spain) contains two lower Miocene units that are rich in fossils. The Unit B contains oil-shale and laminated bituminous dolomicrite related to a palaeolake, whereas the Unit C is composed of sandstone and mudstone beds from distal deltaic and shallow lacustrine environments. The La Rinconada and San Chils localities from the Unit B have yielded a fossil assemblage of plants, molluscs, arthropods, and vertebrates, while the localities from the Unit C in the Campisano ravine (Araia/Mas d'Antolino outcrop) are rich in mammalian record. Here we study a new palaeolake deposit of laminated lacustrine limestone beds in the Unit C named Foieta la Sarra-A. This new locality has provided an assemblage of charophytes, terrestrial plants, molluscs, arthropods, and teleosteans. The latter represent the only known fish record from the Ribesalbes-Alcora Basin to date. Although the specimens are generally poorly preserved, the presence of soft-body preservation due to the action of microbial mats at the lake bottom allows considering the Foieta la Sarra-A locality as a Konservat-Lagerstätte. The Foieta la Sarra-A palaeolake had a different water chemistry compared to that represented in the Unit B. Its depth was about a few metres and the water level suffered periodic fluctuations. This new locality sheds light on the palaeoenvironmental dynamics of the Ribesalbes-Alcora Basin during the early Miocene and provides a new approach to the palaeoecological reconstruction of the basin.

Matèries

Paleoecologia, Miocè, Paleontologia, Insectes fòssils, Península Ibèrica, Sediments lacustres

Matèries (anglès)

Paleoecology, Miocene, Paleontology, Insects fossil, Iberian Peninsula, Lake sediments

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Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)

Citació

ÁLVAREZ-PARRA, Sergio, et al. The early Miocene lake of Foieta la Sarra-A in eastern Iberian Peninsula and its relevance for the reconstruction of the Ribesalbes-Alcora Basin palaeoecology. Acta Palaeontologica Polonica. 2021. Vol. 66. ISSN 0567-7920. [consulted: 11 of August of 2026]. Available at: https://hdl.handle.net/2445/179875

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