Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/109006
Title: Lower Aptian ammonite biostratigraphy in the Maestrat Basin (Eastern Iberian Chain, Eastern Spain). A Tethyan transgressive record enhanced by synrift subsidence.
Author: Moreno-Bedmar, Josep Anton
Company, M.
Bover-Arnal, Telm
Salas, Ramon (Salas Roig)
Delanoy, G.
Maurrasse, F.J.-M.R.
Grauges, A.
Martínez, R.
Keywords: Ammonits
Aptià
Bioestratigrafia
Espanya
Ammonites
Aptian
Stratigraphic paleontology
Spain
Issue Date: 2010
Publisher: (UB). (ICTJA). (IDEA). (UAB). (CSIC)
Abstract: Major global palaeobiologic and palaeoenvironmental changes occurred during the Early Aptian. Precise dating and timing of the different events is crucial to determine possible cause-effect relationships between them. In this regard, the combination of biostratigraphic and chemostratigraphic data can provide a very useful tool for time control. So far attempts to correlate the Lower Aptian carbon isotope record and the ammonite zonation yielded contradictory conclusions.In this paper, we present the results of an integrated analysis of the ammonite stratigraphic distribution and highresolution carbon isotope profi les from Lower Aptian sections of the eastern Prebetic Domain (Betic Cordillera, southeastern Spain). We recognized, in ascending order, the Deshayesites oglanlensis, Deshayesites forbesi, Deshayesites deshayesi, and Dufrenoyia furcata Zones. This succession is the same as that recently identifi ed in the eastern Iberian Chain, and it closely correlates with both standard Mediterranean and Boreal zonations. The carbon isotope record displays the trends globally recognized for the Early Aptian, with two long positive shifts separated by a pronounced negative excursion. Calibration of this isotopic record with the ammonite zonation shows that the age of OAE 1a, which corresponds to the negative excursion and subsequent positive shift, is constrained to the middle/upper part of the Deshayesites forbesi Zone.
Note: Reproducció del document publicat a: https://doi.org/10.1344/105.000001534
It is part of: Geologica Acta, 2010, vol. 8, num. 3, p. 281-299
Related resource: https://doi.org/10.1344/105.000001534
URI: http://hdl.handle.net/2445/109006
ISSN: 1695-6133
Appears in Collections:Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)

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