作者： María Luz González-Regalado , Jorge Civis , Manuel Abad , José Ángel González Delgado , Edith Xio
DOI:
关键词: Ostracod 、 Facies 、 Structural basin 、 Fluvial 、 Bathyal zone 、 Period (geology) 、 Abyssal zone 、 Paleontology 、 Biozone 、 Geology
摘要: This paper analyzes the lithostratigraphic features and ostracod associations of Pliocene deposits located in western sector Guadalquivir basin (SW Spain). A regressive cycle is defined by vertical distribution five main facies (FA-1 to FA-5), which were deposited upper bathyal fluvial palaeoenvironments. The broad palaeontological record utilized draw a general outline food chain each palaeoenvironment. comparison with southeastern Spain, southwestern France Portugal permits define common biozonation for Europe during this period. Four marine biozones are distinguished: (a): Pontocythere elongata biozone (infralittoral); (b): Costa edwardsii (shallow circalittoral); (c): Bosquetina carinella (deep (d): Henryhowella asperrima (upper bathyal). Freshwater, brackish lower bathyal/abyssal species very scarce area # 2008 Elsevier Masson SAS. All rights reserved.