气候变化领域集成服务门户(CCPortal): Facies; phosphate; and fossil preservation potential across a Lower Cambrian carbonate shelf; Arrowie Basin; South Australia

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DOI	10.1016/j.palaeo.2019.05.022
	Facies; phosphate; and fossil preservation potential across a Lower Cambrian carbonate shelf; Arrowie Basin; South Australia
	Jacquet S.M.; Betts M.J.; Huntley J.W.; Brock G.A.
发表日期	2019
ISSN	0031-0182
卷号	533
英文摘要	The effects of sedimentological, depositional and taphonomic processes on preservation potential of Cambrian small shelly fossils (SSF) have important implications for their utility in biostratigraphy and high-resolution correlation. To investigate the effects of these processes on fossil occurrence, detailed microfacies analysis, biostratigraphic data, and multivariate analyses are integrated from an exemplar stratigraphic section intersecting a suite of lower Cambrian carbonate palaeoenvironments in the northern Flinders Ranges, South Australia. The succession deepens upsection, across a low-gradient shallow-marine shelf. Six depositional Facies Sequences are identified ranging from protected (FS1) and open (FS2) shelf/lagoonal systems, high-energy inner ramp shoal complex (FS3), mid-shelf (FS4), mid- to outer-shelf (FS5) and outer-shelf (FS6) environments. Non-metric multi-dimensional scaling ordination and two-way cluster analysis reveal an underlying bathymetric gradient as the main control on the distribution of SSFs. Unlike groups that produced primary organophosphatic biominerals, taxa that built calcareous skeletons are more taphonomically-controlled, which is further exacerbated by sampling and processing biases. A strong facies association with condensed and reworked horizons suggests the stratigraphic occurrence of calcareous groups reflects conditions conducive to preservation (phosphogenesis and phosphatization) rather than true stratigraphic ranges. Consequently, organophosphatic taxa should take precedence in the erection of biostratigraphic zones for subdivision of lower Cambrian successions. © 2019 Elsevier B.V.
英文关键词	Biominerals; Calcareous; Hardgrounds; Microfacies; Organophosphatic; Taphonomy
语种	英语
scopus关键词	biomineralization; biostratigraphy; Cambrian; carbonate system; facies; fossil record; marine ecosystem; microfacies; paleoenvironment; phosphate; preservation; taphonomy; Arrowie Basin; Australia; Flinders Range; South Australia
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150825
作者单位	Department of Geological Sciences, University of Missouri, Columbia, MO 65211, United States; Department of Biological Sciences, Macquarie University, Sydney, New South Wales 2109, Australia; Palaeoscience Research Centre, School of Environmental and Rural Science, University of New England, Armidale, New South Wales 2351, Australia; Early Life Institute and Department of Geology, State Key Laboratory for Continental Dynamics, Northwest University, Xi'an, 710069, China
推荐引用方式 GB/T 7714	Jacquet S.M.,Betts M.J.,Huntley J.W.,et al. Facies; phosphate; and fossil preservation potential across a Lower Cambrian carbonate shelf; Arrowie Basin; South Australia[J],2019,533.
APA	Jacquet S.M.,Betts M.J.,Huntley J.W.,&Brock G.A..(2019).Facies; phosphate; and fossil preservation potential across a Lower Cambrian carbonate shelf; Arrowie Basin; South Australia.Palaeogeography, Palaeoclimatology, Palaeoecology,533.
MLA	Jacquet S.M.,et al."Facies; phosphate; and fossil preservation potential across a Lower Cambrian carbonate shelf; Arrowie Basin; South Australia".Palaeogeography, Palaeoclimatology, Palaeoecology 533(2019).