Calizas de briozoos del Oligoceno superior-Mioceno inferior: Implicaciones paleoambientales (Subbético Externo, Sierra de Cabra, provincia de Córdoba)
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Abstract
Los briozoos son buenos indicadores paleoambientales, principalmente
en carbonatos de aguas marinas templadas y frías. Parámetros paleoambientales
como temperatura, salinidad, energía del agua, carácter del sustrato
y tasa de sedimentación se deducen de las asociaciones de briozoos.
Los briozoarios se describen y utilizan con este fin, por primera vez, en las
rocas del Oligoceno-Mioceno del Subbético Externo. Las calcarenitas y calciruditas
con briozoos se depositaron a profundidades comprendidas entre
unos 15 y 60 m, en competencia y relación lateral con otras facies ligeramente
más profundas de foraminíferos bentónicos y rodolitos
Bryozoans are excellent paleoenvironmental and paleoclimatic indicators, particularly for temperate and cold-water carbonates. Bryozoan diversity, abundance, zooid morphology and colony growth forms, as well as their structures provide information on the physical controls on their habitat. Palaeoenvironmental parameters such as temperature, salinity, water energy, substrate characteristics, and sedimentation rate are inferred from the bryozoans assemblages. The bryozoarians are described and analysed for the firt time in the Oligocene-Miocene rocks of the External Subbetic (Betic Cordillera). The calcirudites and calcarenites with bryozoa were deposited at depths between 15 and 60 m, in competition with and laterally related to deeper benthic foraminifer and rhodolith facies
Bryozoans are excellent paleoenvironmental and paleoclimatic indicators, particularly for temperate and cold-water carbonates. Bryozoan diversity, abundance, zooid morphology and colony growth forms, as well as their structures provide information on the physical controls on their habitat. Palaeoenvironmental parameters such as temperature, salinity, water energy, substrate characteristics, and sedimentation rate are inferred from the bryozoans assemblages. The bryozoarians are described and analysed for the firt time in the Oligocene-Miocene rocks of the External Subbetic (Betic Cordillera). The calcirudites and calcarenites with bryozoa were deposited at depths between 15 and 60 m, in competition with and laterally related to deeper benthic foraminifer and rhodolith facies







