Lower Aptian ammonite and planktonic foraminifera integrated biostratigraphy and the age of the OAE1a in the Morella sub-basin, Maestrat Basin (eastern Spain)
Garcia Artigas, Ruben A. (Agència Catalana de l’Aigua)
Moreno Bedmar, Josep Anton (Universidad Nacional Autónoma de México)
Gea, Ginés de (Universidad de Jaén)
Aguado, Roque (Universidad de Jaén)
Bover-Arnal, Telm (Universitat de Barcelona. Departament de Mineralogia, Petrologia i Geologia Aplicada)
Company, Miquel (Universidad de Granada)
García Penas, Álvaro (Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Coyoacán, 04510, México, Ciudad de México, Mexico)
Salas, Ramon (Universitat de Barcelona. Departament de Mineralogia, Petrologia i Geologia Aplicada)

Data:	2026
Resum:	A correlation between planktonic foraminifera and ammonite biostratigraphic biozonations has for the first time been established for the lower Aptian of the Morella sub-basin (northern Maestrat Basin). The planktonic foraminifera zones recognized are Globigerinelloides blowi, Globigerinelloides aptiensis, Leupoldina cabri and Hedbergella luterbacheri. The identified ammonite zones include the Deshayesites forbesi, Deshayesites deshayesi and Dufrenoyia furcata zones, and the Roloboceras hambrovi and Deshayesites grandis subzones. The boundary between the G. aptiensis and L. cabri zones was recorded in the uppermost part of the Deshayesites forbesi Zone, coinciding with the middle part of the R. hambrovi Subzone. The H. luterbacheri Zone spans almost the entire Deshayesites deshayesi Zone and the whole Dufrenoyia furcata Zone. The Oceanic Anoxic Event (OAE1a) has also been calibrated against the two biostratigraphic schemes. This event spans almost all the G. aptiensis and the basal part of the L. cabri planktonic foraminifera zones and largely coincides with the R. hambrovi ammonite subzone. This study provides an extended and accurate biostratigraphic framework for the Morella sub-basin, helping to better constrain the age of stratigraphic intervals where ammonites are scarce or absent, that may also serve as a powerful correlation tool for the analysis of other coeval marine sedimentary successions in the Tethys.
Ajuts:	Generalitat de Catalunya 2021 SGR-Cat 00349 Agencia Estatal de Investigación PID2024-159218NB-I00 Agencia Estatal de Investigación PID2020-113912GB-I00
Nota:	Altres ajuts: Beca APIIT IN113625 de la DGAPA, Universidad Nacional Autónoma de México
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre i quan aquestes es distribueixin sota la mateixa llicència que regula l'obra original i es reconegui l'autoria.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Lower aptian ; Ammonites ; Planktonic foraminifera ; Oae1a ; Maestrat basin.
Publicat a:	Geologica acta, Vol. 24 (2026) (Carbonate successions from Iberia and the Caribbean - Homage to Ramon Salas) , ISSN 1696-5728

Adreça original: https://revistes.ub.edu/index.php/GEOACTA/article/view/51101

19 p, 16.9 MB

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