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La ruptura de la plataforma carbonatada del Lías Inferior en el Subbético Oriental (Provincias de Murcia y Alicante): Distribución de facies y valores isotópicos del 87Sr/86S r , C y O

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Nieto, Luis M. and Ruiz-Ortiz, Pedro A. and Rey, Javier and Benito Moreno, María Isabel (2004) La ruptura de la plataforma carbonatada del Lías Inferior en el Subbético Oriental (Provincias de Murcia y Alicante): Distribución de facies y valores isotópicos del 87Sr/86S r , C y O. Geotemas, 7 . pp. 171-176. ISSN 1576-5172

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Abstract

The carbonate rocks of the upper part of the Gavilán Fm from the Eastern Subbetic are studied. They have been dated as Early Pliensbachian (carixian) in age and they were deposited in a carbonate platform. The stratigraphic and facies analysis show that the general scheme proposed by Ruiz-Ortiz et al. (2004) for the middle and upper member of the formation, each of them interpreted as a depositional sequence, can be easily applied. Moreover, a third sequence can be differentiated from the unusual record of upper Carixian sediments in some of the studied sections. The evolution of the content in b,3C, b180 and 87Sr/86Sr, is also analyzed from belemnites rostra. The values of these isotope ratios range between their characteristic values for the Pliensbachian according to different authors. Some critical variations can be correlated with those proposed for equivalent ages by other authors.


Item Type:Article
Uncontrolled Keywords:Subbetic, Early Liassic, Chemostratigraphy, Sr, C and O isotopes, Platform drowning
Subjects:Sciences > Geology > Stratigraphic geology
Sciences > Geology > Geochemistry
ID Code:60622
Deposited On:22 May 2020 11:21
Last Modified:22 May 2020 11:21

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