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DOI: 10.1016/j.palaeo.2015.03.004
论文题名:
The trace fossil Gyrophyllites in deep-sea siliciclastic deposits of the Istebna Formation (Upper Cretaceous-Palaeocene) of the Carpathians: An example of biologically controlled distribution
作者: Strzeboński P.; Uchman A.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2015
卷: 426
起始页码: 260
结束页码: 274
语种: 英语
英文关键词: Gyrophyllites kwassizensis ; Istebna formation ; Silesian Nappe ; Trace fossil ; Western Flysch Carpathians
英文摘要: Gyrophyllites kwassizensis Glocker occurs abundantly in deep-sea, density current siliciclastics of the Istebna Formation (Silesian Nappe, Outer Western Carpathians; Poland, Slovakia and Czech Republic), close to the Cretaceous-Palaeogene boundary. It is composed of petal-shaped lobes radiating from a thin shaft, forming rosettes on a few levels in the sediment. The trace fossil is interpreted as a feeding structure produced by a soft-body "worm", which actively filled the lobes with mud transported from the underlying layer, probably in response to migration of redox boundary in a generally poorly oxygenated environment. Probably due to microbial decomposition of cellulose and other organic particles, the mud from below was more nutritional than the more fresh mud from the sea floor. The number of lobes in a rosette (from 7 to 15) is referred to ontogenetic development of the tracemaker and indirectly to time of burrow occupation. The number varies between localities and may indicate a more hospitable habitat in the areas where the number is higher. G. kwassizensis occurs only in a narrow stratigraphic interval after a significant drop of sedimentation rate caused by non-eustatic reasons, in facies conditions, which are not unique during the long history (Late Jurassic-Miocene) of the external Carpathian subbasins. This suggests that facies control was less important for distribution of this trace fossil than some undetermined biological factors, which enabled successful, but incidental invasion of the tracemaker to deep-sea floor of one of the subbasins - the Silesian Basin. © 2015 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68965
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作者单位: AGH University of Science and Technology, Faculty of Geology, Geophysics and Environmental Protection, Department of General Geology and Geotourism, al. A. Mickiewicza 30, Kraków, Poland; Jagiellonian University, Institute of Geological Sciences, Oleandry 2a, Kraków, Poland

Recommended Citation:
Strzeboński P.,Uchman A.. The trace fossil Gyrophyllites in deep-sea siliciclastic deposits of the Istebna Formation (Upper Cretaceous-Palaeocene) of the Carpathians: An example of biologically controlled distribution[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2015-01-01,426
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