Rare earth element and SrNd isotope geochemistry of phosphate nodules from the lower Cambrian Niutitang Formation, NW Hunan Province, South China

Zhu, Bin; Jiang, Shao‐Yong; Yang, Jin; Pi, Dao-Hui; Ling, Hong‐Fei; Yongquan, Chen

doi:10.1016/j.palaeo.2013.10.002

Cited by 60 publications

(31 citation statements)

References 66 publications

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“…This technique has been applied by many previous researchers, for example, Shields and Stille (2001) used hydrochloric acid leaching method for isotopic and REE study of Cambrian phosphorites, and so did Jiang et al (2007) and Zhu et al (2014) for similar rocks. Besides, Guo et al (2007) used hydrochloric acid leaching to remove calcium phosphate minerals for chemostratigraphy study for organosedimentary metal enrichment and silicification in the early Cambrian.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…fractions in each sample, first in 1 N acetic acid to dissolve the carbonate fractions (Nothdurft et al, 2004;Jiang et al, 2007;Ling et al, 2013) and then in 1 N hydrochloric acid to release the phosphate fractions in the same sample (Shields and Stille, 2001;Jiang et al, 2007;Guo et al, 2009;Zhu et al 2014). After first dissolution in 1 N acetic acid, the samples were centrifuged and the supernatants were transferred into clean Teflon beakers.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…The supernatants of both fractions were evaporated to near dryness on a hotplate at about 120 o C, and then 1 mL concentrated nitric acid was added into the beakers and dried twice to remove the acetic acid or hydrochloric acid in the samples. Then the nearly dried samples were dissolved in 3% nitric acid and calibrated to 10 mL to be analyzed while doped by 0.2 mL 500ppb Rh as internal standard (Jiang et al, 2007;Zhu et al 2014). Rare earth elements were analyzed by an ICP-MS (Aurora M90, Bruker) and determined by linear regression to laboratory standards, while the analytical precision is better than 10% RSD.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…As a result, the REEs of the phosphatic rocks can be used to indicate the depositional and/or diagenetic environments as they may record the REE characteristics of the seawater in equilibrium with the phosphorites at the time of their formation (Zhu et al, 2014). However, different REE suppliers (McArthur and Walsh, 1984) and diagenetic overprinting (German and Elderfield, 1990;Reynard et al, 1999;Shields and Stille, 2001) may result to a wide variety of the shale-normalized REE patterns in modern and ancient phosphorite deposits (e.g.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…However, different REE suppliers (McArthur and Walsh, 1984) and diagenetic overprinting (German and Elderfield, 1990;Reynard et al, 1999;Shields and Stille, 2001) may result to a wide variety of the shale-normalized REE patterns in modern and ancient phosphorite deposits (e.g. Trappe, 1998;Jiang et al, 2007;Pi et al, 2013;Zhu et al, 2014), including seawater-like pattern and hat-shaped pattern (Reynard et al, 1999).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

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Rare earth element and Sr–Nd isotope geochemistry of phosphatic rocks in Neoproterozoic Ediacaran Doushantuo Formation in Zhangcunping section from western Hubei Province, South China

Hong

Jiang

Yang

et al. 2015

Palaeogeography, Palaeoclimatology, Palaeoecology

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Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Accepted Manuscriptmentioning

confidence: 99%

See 3 more Smart Citations

Rare earth element and Sr–Nd isotope geochemistry of phosphatic rocks in Neoproterozoic Ediacaran Doushantuo Formation in Zhangcunping section from western Hubei Province, South China

Hong

Jiang

Yang

et al. 2015

Palaeogeography, Palaeoclimatology, Palaeoecology

Self Cite

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Lower Gondwana palaeobotany and geochemistry of phosphorite occurrence in the north‐western part of Ib‐River Coalfield, Odisha, India, and their implications

Goswami,

Swain,

Aggarwal

et al. 2024

Geological Journal

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The present investigation breaks new ground by examining the Raniganj sediments in the Kendudihi section of the Ib‐River Coalfield, Odisha, India. The study identifies a megaflora consisting of 25 species of Glossopteris, Vertebraria indica, stem casts and equisetaceous stems. The microflora is predominantly composed of Striatopodocarpites spp., with a secondary presence of Densipollenites spp. The lithological signatures, including off‐white fine‐grained sandstone with thin bands of silty shale and grey shale, indicate that these sediments belong to the Late Permian succession of the Lower Gondwana sequence, specifically the Raniganj Formation. The macrofloral assemblage found in the lowermost grey shale can be attributed to the Wordian–Capitanian age, while the microfloral assemblage in the upper silty shale resembles that of the Wuchiapingian‐Changhsingian age. Well‐preserved palynomorphs and megafossils, along with the abundant occurrence of lath‐shaped translucent phytoclasts in the grey and silty shale of the Raniganj sediments exposed in the Kendudihi section, explicitly suggest that the sediments were deposited in proximal, low‐energy swampy settings. Additionally, the moderate occurrence of charcoal (20%), along with the existence of degraded organic matter (DOM: 7.6%) and amorphous organic matter (AOM: 16.4%), indicates that the sediments might have been deposited in oxic–dysoxic conditions. The palynological and megafloral studies reveal a warm‐temperate climate with low humidity and intermittent spells of hot and cold seasons, associated with abundant rainfall. The occurrence of phosphorite in the form of nodules and thin lenses, as well as biogenic structures at the juncture of the Raniganj and Barren Measures formations, suggests a marine incursion in the area during the deposition of the late Barren Measures and early Raniganj sediments. X‐ray diffraction (XRD) analysis identified fluorapatite (Ca5(PO4)3F) as the predominant phosphatic mineral phase in the phosphatic nodule, siltstone and claystone. The Post‐Archean Australian Shale composition, normalized rare earth element (REE) patterns of samples from this area, reveals slight positive La (average La anomaly: 1.02) and Gd (average Gd anomaly: 1.05) anomalies and heavy REE enrichment compared to light REE, explicitly indicating a marine environment.

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The occurrence of vanadium in nature: its biogeochemical cycling and relationship with organic matter—a case study of the Early Cambrian black rocks of the Niutitang Formation, western Hunan, China

et al. 2021

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Rare earth element and SrNd isotope geochemistry of phosphate nodules from the lower Cambrian Niutitang Formation, NW Hunan Province, South China

Cited by 60 publications

References 66 publications

Rare earth element and Sr–Nd isotope geochemistry of phosphatic rocks in Neoproterozoic Ediacaran Doushantuo Formation in Zhangcunping section from western Hubei Province, South China

Rare earth element and Sr–Nd isotope geochemistry of phosphatic rocks in Neoproterozoic Ediacaran Doushantuo Formation in Zhangcunping section from western Hubei Province, South China

Lower Gondwana palaeobotany and geochemistry of phosphorite occurrence in the north‐western part of Ib‐River Coalfield, Odisha, India, and their implications

The occurrence of vanadium in nature: its biogeochemical cycling and relationship with organic matter—a case study of the Early Cambrian black rocks of the Niutitang Formation, western Hunan, China

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