DOI: 10.1016/j.palaeo.2016.04.025
论文题名: Frutexites from microbial/metazoan bioconstructions of recent and Pleistocene marine caves (Sicily, Italy)
作者: Guido A. ; Rosso A. ; Sanfilippo R. ; Russo F. ; Mastandrea A.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2016
卷: 453 起始页码: 127
结束页码: 138
语种: 英语
英文关键词: Bacteria
; Bioconstructions
; Frutexites
; Sicily
; Submarine cave
英文摘要: Frutexites-like structures were recorded in small bioconstructions from Recent and Pleistocene marine caves. The skeletal/microbialite frameworks hosting Frutexites form in cryptic environments characterized by poor light availability and reduced water circulation leading to confinement, oligotrophic conditions and the development of typical cave communities. Biostalactites and biotic crusts develop in the more confined parts of the both Recent and Pleistocene caves. They are composed of skeletal organisms engulfed in fine micrite sediments deposited in situ via microbial metabolic activity. The Frutexites, composed of Iron and Manganese oxides, are confined to microcavities or microfractures of the bioconstructions. They grow from an original discontinuity surface into the surrounding consolidated micritic sediments. A model based on the increase of the microporosity of micritic sediments due to the dissolution of the original material and precipitation of ferromanganesiferous compounds was proposed. This process occurs during the syndepositional diagenetic stage due to the intrusion in the bioconstruction framework of acidic continental water rich in Iron and Manganese. Mesophilic Fe-Mn autotrophic and chemoheterotrophic bacteria flourish on the microcavities and induce the precipitation of Fe and Mn oxides. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68412
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Biology, Ecology and Earth Sciences, University of Calabria, Via Bucci, cubo 15b, Rende, Cosenza, Italy; Department of Biological, Geological and Environmental Sciences, Catania University, Corso Italia, 57, Catania, Italy
Recommended Citation:
Guido A.,Rosso A.,Sanfilippo R.,et al. Frutexites from microbial/metazoan bioconstructions of recent and Pleistocene marine caves (Sicily, Italy)[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2016-01-01,453