Coral biostromes of the Middle Jurassic from the Subbetic (Betic Cordillera, southern Spain): Facies, coral taxonomy, taphonomy, and palaeoecology

Matías Reolid, José Miguel Molina, Hannes Loser, Vicente Navarro, Pedro A. Ruiz-Ortiz

Resultado de la investigación: Contribución a una revistaArtículo

14 Citas (Scopus)

Resumen

Coral biostromes from the Camarena Formation (External Subbetic, Betic Cordillera) are reviewed under palaeoecologic, taphonomic, and palaeontologic aspects. The biostromes are dominated by phaceloid forms and are characterized by a typical shallow-marine microencruster assemblage with photophilic microencrusters and scarce microbial crusts. The abundance of stylinid corals and light-dependant microencrusters suggests oligotrophic conditions. Coral colonies were located among oolitic shoals that were unfavorable for coral growth. The corals were developed in phases without oolitic production alternating with phases of oolitic production, forming metric-scale sequences. A relative sea-level fall would have reduced the ooidal production and led to the deposition of thin layers of micritic facies in intertidal areas. The cementation and hardening of the bottom resulted in a hardground that was colonized by corals after a subsequent relative sea-level rise. The progressive increase of the energetic conditions induced an increasing production of ooids and the migration of oolitic shoals, which covered and finished the coral biostromes. Repetition of this process gave rise to sequences reflecting small pulses of oscillations in the relative sea level.

Idioma originalInglés
Páginas (desde-hasta)575-593
Número de páginas19
PublicaciónFacies
Volumen55
N.º4
DOI
EstadoPublicada - 15 may 2009

Huella dactilar

biostrome
taphonomy
paleoecology
cordillera
coral
Jurassic
sea level
cementation
hardening
energetics
oscillation
crust

Citar esto

Reolid, Matías ; Molina, José Miguel ; Loser, Hannes ; Navarro, Vicente ; Ruiz-Ortiz, Pedro A. / Coral biostromes of the Middle Jurassic from the Subbetic (Betic Cordillera, southern Spain) : Facies, coral taxonomy, taphonomy, and palaeoecology. En: Facies. 2009 ; Vol. 55, N.º 4. pp. 575-593.
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abstract = "Coral biostromes from the Camarena Formation (External Subbetic, Betic Cordillera) are reviewed under palaeoecologic, taphonomic, and palaeontologic aspects. The biostromes are dominated by phaceloid forms and are characterized by a typical shallow-marine microencruster assemblage with photophilic microencrusters and scarce microbial crusts. The abundance of stylinid corals and light-dependant microencrusters suggests oligotrophic conditions. Coral colonies were located among oolitic shoals that were unfavorable for coral growth. The corals were developed in phases without oolitic production alternating with phases of oolitic production, forming metric-scale sequences. A relative sea-level fall would have reduced the ooidal production and led to the deposition of thin layers of micritic facies in intertidal areas. The cementation and hardening of the bottom resulted in a hardground that was colonized by corals after a subsequent relative sea-level rise. The progressive increase of the energetic conditions induced an increasing production of ooids and the migration of oolitic shoals, which covered and finished the coral biostromes. Repetition of this process gave rise to sequences reflecting small pulses of oscillations in the relative sea level.",
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Coral biostromes of the Middle Jurassic from the Subbetic (Betic Cordillera, southern Spain) : Facies, coral taxonomy, taphonomy, and palaeoecology. / Reolid, Matías; Molina, José Miguel; Loser, Hannes; Navarro, Vicente; Ruiz-Ortiz, Pedro A.

En: Facies, Vol. 55, N.º 4, 15.05.2009, p. 575-593.

Resultado de la investigación: Contribución a una revistaArtículo

TY - JOUR

T1 - Coral biostromes of the Middle Jurassic from the Subbetic (Betic Cordillera, southern Spain)

T2 - Facies, coral taxonomy, taphonomy, and palaeoecology

AU - Reolid, Matías

AU - Molina, José Miguel

AU - Loser, Hannes

AU - Navarro, Vicente

AU - Ruiz-Ortiz, Pedro A.

PY - 2009/5/15

Y1 - 2009/5/15

N2 - Coral biostromes from the Camarena Formation (External Subbetic, Betic Cordillera) are reviewed under palaeoecologic, taphonomic, and palaeontologic aspects. The biostromes are dominated by phaceloid forms and are characterized by a typical shallow-marine microencruster assemblage with photophilic microencrusters and scarce microbial crusts. The abundance of stylinid corals and light-dependant microencrusters suggests oligotrophic conditions. Coral colonies were located among oolitic shoals that were unfavorable for coral growth. The corals were developed in phases without oolitic production alternating with phases of oolitic production, forming metric-scale sequences. A relative sea-level fall would have reduced the ooidal production and led to the deposition of thin layers of micritic facies in intertidal areas. The cementation and hardening of the bottom resulted in a hardground that was colonized by corals after a subsequent relative sea-level rise. The progressive increase of the energetic conditions induced an increasing production of ooids and the migration of oolitic shoals, which covered and finished the coral biostromes. Repetition of this process gave rise to sequences reflecting small pulses of oscillations in the relative sea level.

AB - Coral biostromes from the Camarena Formation (External Subbetic, Betic Cordillera) are reviewed under palaeoecologic, taphonomic, and palaeontologic aspects. The biostromes are dominated by phaceloid forms and are characterized by a typical shallow-marine microencruster assemblage with photophilic microencrusters and scarce microbial crusts. The abundance of stylinid corals and light-dependant microencrusters suggests oligotrophic conditions. Coral colonies were located among oolitic shoals that were unfavorable for coral growth. The corals were developed in phases without oolitic production alternating with phases of oolitic production, forming metric-scale sequences. A relative sea-level fall would have reduced the ooidal production and led to the deposition of thin layers of micritic facies in intertidal areas. The cementation and hardening of the bottom resulted in a hardground that was colonized by corals after a subsequent relative sea-level rise. The progressive increase of the energetic conditions induced an increasing production of ooids and the migration of oolitic shoals, which covered and finished the coral biostromes. Repetition of this process gave rise to sequences reflecting small pulses of oscillations in the relative sea level.

KW - Middle jurassic

KW - Oolitic limestones

KW - Palaeoenvironment

KW - Scleractinia

KW - Subbetic

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JO - Facies

JF - Facies

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