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Reelaborated ammonites as indicator of condensed deposits from deep marine environments. Case study from Lower Pliensbachian limestones of Portugal.

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Fernández López, Sixto Rafael and Duarte, Luís Vitor and Henriques, María Helena Paiva (1999) Reelaborated ammonites as indicator of condensed deposits from deep marine environments. Case study from Lower Pliensbachian limestones of Portugal. In Abstracts, European Palaeontological Association Workshop Conference: Links between fossil assemblages and sedimentary cycles and sequences Lisboa, Portugal, July 22-25th 1999. Euroean association paleontological, Lisboa, pp. 42-46.

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Abstract

Lumpy limestones with reelaborated ammonites are a typical facies in the Lower Pliensbachian
of the Lusitanian Basin. They were developed in deep marine environments, induced by sedimentary
starving. Reelaborated ammonites, with various taphonomic attributes, provide a key to recognition of
condensed deposits developed in deep offshore environments during intervals of low sediment input.
[RÉSUMÉ]: Les calcaires grumeleux avec des ammonites réélaborées, correspondent a un facies très
typique dans le Pliensbachien inférieur du Bassin Lusitanien. Ils se sont développés en milieu marin
profond, sur conditions de bas taux de sédimentation. Ces ammonites réélaborées, avec des différents
attributs taphonomiques, sont un moyen important pour la reconnaissance de dépôts condensées en
milieu marin profond.


Item Type:Book Section
Uncontrolled Keywords:Applied taphonomy, Sequence stratigraphy, Carbonate platforms, Palaeobathymetry, Jurassic, Portugal, Taphonomie appliquée, Stratigraphic séquentielle, Plate-formes carbonatées, Paléobathymétrie, Jurassique, Portugal
Subjects:Sciences > Geology > Paleontology
ID Code:21964
Deposited On:18 Jun 2013 12:27
Last Modified:11 Dec 2018 08:42

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