Bivalves in the upper Miocene reef complex of Mallorca, Spain

Autores/as

  • Antonio Pablo Jiménez
  • Lluis Pomar Universidad de Palma de Mallorca
  • Juan Carlos Braga Alarcon Universidad de Granada

DOI:

https://doi.org/10.7203/sjp.23920

Palabras clave:

Bivalves, reef, Upper Miocene, Mallorca, Mediterranean.

Resumen

Bivalves are common components in all the palaeoenvironments recognised in the Llucmajor Platform, the best-known outcrop of the Upper Miocene Mallorca Reef Complex. Shell concentrations of autochthonous elements with a low degree of taphonomical modification accumulated on the deep, quiet water bottoms from the basin to proximal reef slope. Low sedimentation presumably enhanced shell concentration as well as the development of clusters of superimposed slow-growing organisms, such as Neopycnodonte oysters that are typical of the basin and distal slope settings. Debris-flow beds of mostly disarticulated, fragmented and reoriented moulds of valves intercalate with the autochthonous shell concentrations in the basin and slope deposits as the result of downslope transport of bioclasts from shallower reef areas. Bivalve assemblages in the shallower-water reef palaeonvironments mainly con.sist of moulds of reworked fragments of disarticulated valves. Some crevice-dwellers, cemented and epibyssate forms were preserved in life position in the shelters created by coral colonies and blocks. The percentage of unbroken and articulated shallow endosedimentary bivalves is higher towards the protected inner-lagoon settings, in which Tellina specimens are the most characteristic components. We have identified 52 bivalve species belonging to 38 genera and recorded 19 additional species only identifiable at the generic level in all the sampled reef palaeonvironments. 

Descargas

Los datos de descargas todavía no están disponibles.

Biografía del autor/a

Antonio Pablo Jiménez

Universidad de Málaga

Descargas

Publicado

2022-02-27

Cómo citar

Jiménez, A. P., Pomar, L., & Braga Alarcon, J. C. (2022). Bivalves in the upper Miocene reef complex of Mallorca, Spain. Spanish Journal of Palaeontology, 14(3), 65–75. https://doi.org/10.7203/sjp.23920
Metrics
Vistas/Descargas
  • Resumen
    172
  • PDF
    106

Métrica

Artículos similares

1 2 3 4 5 6 7 8 9 10 > >> 

También puede Iniciar una búsqueda de similitud avanzada para este artículo.