Publication: Los montículos arrecifales de algas y arqueociatos
del Cámbrico inferior de Sierra Morena. II: Las algas calcáreas
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1987
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Instituto Geológico y Minero de España (Madrid)
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Abstract
En las plataformas carbonatadas de Sierra Morena se produjo una gran actividad algal durante el Cámbrico Inferior, con el desarrollo de estructuras cryptalgales de diversos tipos, mallas de algas, estromatolitos y thrombolitos; y la participación, en mayor o menor porcentaje, en la formación de montículos arrecifales con formas esqueléticas calcáreas junto a los arqueociatos. La actual situación sobre la problemática en la clasificación sistemática de las algas cámbricas conduce a que los restos hallados en nuestras áreas de estudio no se hayan considerado desde un punto de vista puramente taxonómico, si bien se ha empleado la estructura nomenclatorial que existe para los «géneros», ya que permite la descripción de estos microfósiles. Además, se ha elaborado el análisis de facies de los sedimentos que contienen dichos restos, lo que nos permite realizar una interpretación paleoecológica de las algas.
In carbonate platforms from Sierra Morena a high algal activity has taken place during the Lower Cambrian, with cryptalgal structures development of different types, alga! mats, stromatolites and thrombolites; and can be found also skeletal calcareous algae forming reef mounds associated with archaeocyathans. Due to the problematic in the systematic classification of the Cambrian calcareous algae, the remains founded in our study material have not been considered in the taxonomic aspect, therefore we have only used the nomenclatorial framework for «genera» which is essential for description of these microfossils. The facies analysis of the algal sediments is used for the paleoecologic interpretation or these materials.
In carbonate platforms from Sierra Morena a high algal activity has taken place during the Lower Cambrian, with cryptalgal structures development of different types, alga! mats, stromatolites and thrombolites; and can be found also skeletal calcareous algae forming reef mounds associated with archaeocyathans. Due to the problematic in the systematic classification of the Cambrian calcareous algae, the remains founded in our study material have not been considered in the taxonomic aspect, therefore we have only used the nomenclatorial framework for «genera» which is essential for description of these microfossils. The facies analysis of the algal sediments is used for the paleoecologic interpretation or these materials.