气候变化领域集成服务门户(CCPortal): An integrated stratinomic model for the genesis and concentration of “small shelly fossil”-style phosphatic microsteinkerns in not-so-exceptional conditions

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DOI	10.1016/j.palaeo.2019.109344
	An integrated stratinomic model for the genesis and concentration of “small shelly fossil”-style phosphatic microsteinkerns in not-so-exceptional conditions
	Freeman R.L.; Dattilo B.F.; Brett C.E.
发表日期	2019
ISSN	0031-0182
卷号	535
英文摘要	Carbonate fluorapatite-filled millimeter-scale microsteinkerns are a key element of the “Small Shelly Fossil” (SSF) fauna generally associated with the late Proterozoic–Cambrian. The purported disappearance of these fossils and this style of phosphatic preservation during the Cambrian Stage 2 “Botomian extinction” has been linked to changes in ocean chemistry and/or changes to the physical environment due to the evolution of metazoans, as well to the changing role of metazoans in the marine environment. Through a qualitative meta-analysis of existing literature, we document a broader temporal distribution for SSF-style preservation than previously recognized. We examine these occurrences for common patterns of depositional conditions, and we offer a conceptual model for both the origin of the phosphatic microsteinkerns and their eventual concentration in certain sediments, based on known biogeochemical diagenetic processes of authigenic calcium fluorapatite precipitation (phosphogenesis) and subsequent concentration of phosphatic sedimentary particles. This polycyclic phosphogenic condensation (PPC) model makes predictions as to how and where this form of preservation might occur in Cambrian and non-Cambrian marine strata alike. © 2019 Elsevier B.V.
英文关键词	Cambrian; Lag deposit; Microfossils; Phosphate; Sequence stratigraphy; Taphonomy
语种	英语
scopus关键词	Cambrian; condensation; fluorapatite; fossil record; microfossil; phosphate; precipitation (chemistry); sequence stratigraphy; taphonomy; temporal distribution; Metazoa
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/150767
作者单位	Department of Earth & Environmental Science, University of Kentucky, Lexington, KY 40506, United States; Department of Biology, Purdue University Fort Wayne, Fort Wayne, IN 46805-1499, United States; Department of Geology, University of Cincinnati, Cincinnati, OH 45221-0013, United States
推荐引用方式 GB/T 7714	Freeman R.L.,Dattilo B.F.,Brett C.E.. An integrated stratinomic model for the genesis and concentration of “small shelly fossil”-style phosphatic microsteinkerns in not-so-exceptional conditions[J],2019,535.
APA	Freeman R.L.,Dattilo B.F.,&Brett C.E..(2019).An integrated stratinomic model for the genesis and concentration of “small shelly fossil”-style phosphatic microsteinkerns in not-so-exceptional conditions.Palaeogeography, Palaeoclimatology, Palaeoecology,535.
MLA	Freeman R.L.,et al."An integrated stratinomic model for the genesis and concentration of “small shelly fossil”-style phosphatic microsteinkerns in not-so-exceptional conditions".Palaeogeography, Palaeoclimatology, Palaeoecology 535(2019).