The Upper Ordovician Microfossil Assemblages from the Pagoda Formation in Zigui, Hubei Province

Zhang, Ke; Yuan, Aihua; Feng, Qinglai

doi:10.1007/s12583-017-0958-7

Cited by 8 publications

(4 citation statements)

References 31 publications

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“…Soil samples for the current study (5-15 cm, n = 75) were collected from an orangery (Huajipo orangery, HJP; n = 25), a vegetable base (Zhangjiachong vegetable base, ZJC; n = 24), and a tea plantation (Lanlinxi tea plantation, LLX; n = 26) in July 2020 (Figure 1). The bedrocks of the tea plantation, vegetable base, and orangery comprise gray-green pebbled silty sandstone of Nantuo (Nh 3n ), dolomitic and calcareous shale of Doushantuo (Z 1 d 3 ), and porphyritic granodiorite (πγδPt 3 ), respectively [23,24]. The soil obtained from the tea plantation is a coarse yellow sandy soil belonging to the acid coarse bone soil subclass.…”

Section: Study Area and Sample Collectionmentioning

confidence: 99%

Application of Pb Isotopes and REY Patterns in Tracing Heavy Metals in Farmland Soils from the Upper-Middle Area of Yangtze River

Ning

Yang

et al. 2023

IJERPH

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Farmland heavy metal pollution—caused by both human activity and natural processes—is a major global issue. In the current study, principal component analysis (PCA), cluster analysis (CA), rare earth elements and yttrium (REY) analysis, and isotope fingerprinting were combined to identify sources of heavy metal pollution in soil from different farmland types in the upper-middle area of the Yangtze River. The concentrations of Zn and Cu were found to be higher in the vegetable base and tea plantation soil compared with their concentrations in the orangery soil. On the other hand, greater accumulation of Cd and Pb was observed in the orangery soil versus the vegetable base and tea plantation soils. Influenced by the type of bedrock, REY was significantly enriched in the orangery soil and depleted in the vegetable base soil, as compared with the tea plantation soil. The Pb isotopic compositions of the tea plantation (1.173–1.193 for 206Pb/207Pb and 2.070–2.110 for 208Pb/206Pb) and vegetable base (1.181–1.217 for 206Pb/207Pb and 2.052–2.116 for 208Pb/206Pb) soils were comparable to those of coal combustion soil. The compositions of 206Pb/207Pb (1.149–1.170) and 208Pb/206Pb (2.121–2.143) in the orangery soil fell between those observed in soils obtained from coal combustion and ore smelting sites. Using the IsoSource model, the atmospheric Pb contributions of the vegetable base, tea plantation, and orangery soils were calculated to be 66.6%, 90.1%, and 82.0%, respectively, and the bedrock contributions of Pb were calculated to be 33.3%, 9.90%, and 18.1%, respectively. Based on the PCA, CA, and REY results, as well as the Pb isotope model, it appears that heavy metals in the orangery soil may be derived from atmospheric deposition and bedrock weathering, while heavy metals in the vegetable base and tea plantation soils may be derived from mining and the use of fertilizer.

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Section: Study Area and Sample Collectionmentioning

confidence: 99%

Application of Pb Isotopes and REY Patterns in Tracing Heavy Metals in Farmland Soils from the Upper-Middle Area of Yangtze River

Ning

Yang

et al. 2023

IJERPH

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“…Occurrence.-Katian from Australia (Webby and Blom, 1986;Goto et al, 1992;Noble and Webby, 2009;herein), United States (Renz, 1990), China? (Wang and Zhang, 2011;Zhang et al, 2018), and Russia (Obut, 2022).…”

Section: Systematic Paleontologymentioning

confidence: 99%

“…Several other nearby localities in the Lachlan Fold Belt possibly represent correlative Upper Ordovician horizons, albeit in different sedimentary facies (Goto and Ishiga, 1991;Goto et al, 1992). Apart from these Laurentian and Gondwanan sites, assemblages discovered from the Zhaolaoyu Formation in North China (Song et al, 2000) and the Wufeng Formation in South China (Wang and Zhang, 2011;Zhang et al, 2018) further broaden knowledge of the paleogeographic extent of Katian radiolarians. Obut (2022) recently reported Upper Ordovician radiolarians from deep shelf environments of the Siberian paleocontinent.…”

Section: Introductionmentioning

confidence: 99%

“…Malongulli Formation, New South Wales(Goto et al, 1992;Noble and Webby, 2009; this paper) 2 Wufeng Formation, Jiangsu and Hubei(Wang and Zhang, 2011;Zhang et al, 2018) 3 Hanson Creek Formation, Eureka County, Nevada(Dunham and Murphy, 1976;Renz, 1990) 4 Tekhten Formation, NW Gorny Altai, West Siberia(Obut, 2022) Journal of Paleontology:1-194 https://doi.org/10.1017/jpa.2023.13 Published online by Cambridge University Press…”

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Micro-CT analysis of Katian radiolarians from the Malongulli Formation, New South Wales, Australia, and implications for skeletogenesis

Perera

Aitchison

2023

J. Paleontol.

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A diverse and well-preserved radiolarian assemblage from the Malongulli Formation, New South Wales, Australia, contains 13 species representing 10 genera and six families. One new genus, Wiradjuri, is introduced to accommodate pre-Devonian single-shelled entactiniid taxa, and one new species, Secuicollacta malongulliensis, is recorded together with some previously described forms. The microstructures of the “rotasphaerid structure/primary unit” and the “ectopic spicule” are investigated to validate their roles as fundamental units in the Secuicollactidae, together with comprehensive documentation of the previously enigmatic Pseudorotasphaera internal skeleton. The results of this investigation suggest that, among all radiolarian genera that survived the Late Ordovician Mass Extinction event (LOME) and transitioned into the Silurian, Secuicollacta, Haplotaeniatum, and Palaeoephippium maintained stable body plans during the transition and were more successfully established. The selective advantages these lineages had during the LOME were most likely spontaneous outcomes of the mode of structural development involving sequential skeletogenesis and a tendency to evolve toward simpler body plans. UUID: http://zoobank.org/264c026f-35af-4025-a4f7-de8f9a91f8b9

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Great Paleozoic-Mesozoic Biotic Turnings and Paleontological Education in China: A Tribute to the Achievements of Professor Zunyi Yang

et al. 2018

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The Upper Ordovician Microfossil Assemblages from the Pagoda Formation in Zigui, Hubei Province

Cited by 8 publications

References 31 publications

Application of Pb Isotopes and REY Patterns in Tracing Heavy Metals in Farmland Soils from the Upper-Middle Area of Yangtze River

Application of Pb Isotopes and REY Patterns in Tracing Heavy Metals in Farmland Soils from the Upper-Middle Area of Yangtze River

Micro-CT analysis of Katian radiolarians from the Malongulli Formation, New South Wales, Australia, and implications for skeletogenesis

Great Paleozoic-Mesozoic Biotic Turnings and Paleontological Education in China: A Tribute to the Achievements of Professor Zunyi Yang

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