气候变化领域集成服务门户(CCPortal): Trace and rare earth element compositions of Silurian conodonts from the Vesiku Bone Bed: Histological and palaeoenvironmental implications

CCPortal

DOI	10.1016/j.palaeo.2019.109449
	Trace and rare earth element compositions of Silurian conodonts from the Vesiku Bone Bed: Histological and palaeoenvironmental implications
	Žigaitė; Qvarnström M.; Bancroft A.; Pérez-Huerta A.; Blom H.; Ahlberg P.E.
发表日期	2020
ISSN	0031-0182
卷号	549
英文摘要	In-situ minor, trace and rare earth element (REE) compositions have been measured in conodonts from the lower Silurian Vesiku Bone Bed (Estonia), with the aim to visualize and to quantify conodont apatite elemental geochemistry, to evaluate compositional differences between conodont histologies, and to evaluate the use of conodont chemistry as a palaeobiological or palaeoenvironmental proxy. Tissue-selective analyses of minor, trace and rare earth element compositions of albid, hyaline, and basal tissues demonstrated significant chemical offsets among these histologies. The albid tissue had the lowest REE and trace element concentrations, suggesting crystallinity-determined better resilience to diagenetic alteration as documented in previous studies. Conversely, the basal tissue had highest concentrations of REEs and many trace elements, except for Sr that showed an opposite trend. The higher concentrations in albid and hyaline tissues supports the in-vivo Sr incorporation by conodont crown. Nonetheless, the obtained SN-normalized REE patterns were uniform through all the analyzed conodont taxa and different tissues, implying common diagenetic history. Absence of a Ce anomaly, and defined negative Eu anomaly indicate reducing conditions during early burial. These results validate current interpretations of the palaeoenvironmental conditions during the deposition of Vesiku Bone Bed and bolsters the use of REEs in Palaeozoic marine vertebrates as an important palaeoenvironmental proxy. © 2019
英文关键词	Bioapatite; Estonia; histology; LA-ICPMS; Palaeozoic; Saaremaa
语种	英语
scopus关键词	concentration (composition); conodont; histology; invertebrate; marine environment; morphology; paleobiology; paleoenvironment; Paleozoic; proxy climate record; rare earth element; Silurian; trace element; Estonia; Vertebrata
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/150500
作者单位	Subdepartment of Evolution and Development, Department of Organismal Biology, Uppsala University, Uppsala, Sweden; Indiana Geological Survey, Bloomington, IN, United States; Department of Geological Sciences, University of Alabama, Tuscaloosa, AL, United States
推荐引用方式 GB/T 7714	Žigaitė,Qvarnström M.,Bancroft A.,et al. Trace and rare earth element compositions of Silurian conodonts from the Vesiku Bone Bed: Histological and palaeoenvironmental implications[J],2020,549.
APA	Žigaitė,Qvarnström M.,Bancroft A.,Pérez-Huerta A.,Blom H.,&Ahlberg P.E..(2020).Trace and rare earth element compositions of Silurian conodonts from the Vesiku Bone Bed: Histological and palaeoenvironmental implications.Palaeogeography, Palaeoclimatology, Palaeoecology,549.
MLA	Žigaitė,et al."Trace and rare earth element compositions of Silurian conodonts from the Vesiku Bone Bed: Histological and palaeoenvironmental implications".Palaeogeography, Palaeoclimatology, Palaeoecology 549(2020).