Geochemical characteristics and geological significance of chert nodules in Qixia formation, Pingding Mountain, lower Yangtze Plate

Li, Jun; Chen, Luwang; Hao, Chunming; Song, Chuang; Gui, Herong

doi:10.1007/s11629-020-5982-x

Cited by 4 publications

(2 citation statements)

References 74 publications

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“…Long-term application of organic fertilizer could increase the content of Zn in soil by 5%-30%. Other researches showed that Zn content in soil would also show a trend of accumulation with the increase of the planting years of greenhouse vegetable plots [15]. In addition, anthropogenic disturbances in scenic spots and leisure resorts could also enrich elements.…”

Section: Principal Component Analysis and Cluster Analysismentioning

confidence: 99%

Chemical Characteristics of Coil Heavy Metal Elements and Ecological Security Risks Caused by Fertilization

Yan-feng

Qing-sheng

Zhong

2022

Journal of Chemistry

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In order to investigate the effects of fertilization on soil chemical characteristics and ecological security, the chemical characteristics and ecological security risk analysis of heavy metal elements in a certain soil caused by fertilization were proposed. The contents of Ni, V, Cr, As, Cd, Pb, Zn, and Hg in 1,065 surface soil samples collected in a district of a city in the southwest agricultural area were tested and analyzed. Multivariate statistical analysis and spatial analysis were used to clarify the geochemical distribution characteristics of these heavy metals, and the possible main sources were also discussed. The results showed that the eight heavy metals could be divided into three categories. The first category included Ni, V, Cr, and As, whose content was lower than the background value in Beijing. And the distribution was mainly affected by natural factors such as parent materials of soil formation. The second category included Cd, Pb, and Zn, whose average content was higher than the background value. And the content was the highest in residential areas. In addition to the parent material inherited from the soil, the distribution characteristics of these elements were greatly affected by human activities. And Cd was significantly more affected by human activities than Pb and Zn. The third category included Hg, and it was inferred that atmospheric deposition was the main factor affecting the distribution of Hg. It was concluded that the Hakanson method was used to evaluate the ecological risk of heavy metals in soil, and the results showed that the potential ecological risk index was low in the area.

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Section: Principal Component Analysis and Cluster Analysismentioning

confidence: 99%

Chemical Characteristics of Coil Heavy Metal Elements and Ecological Security Risks Caused by Fertilization

Yan-feng

Qing-sheng

Zhong

2022

Journal of Chemistry

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“…However, most of the previous studies described the overall phenomenon and did not conduct a detailed investigation of sedimentary microfacies in local specific areas under the highprecision sequence framework (Huang, et al, 2014;Jiang et al, 2014;Dai et al, 2017;Xiao et al, 2020;Li et al, 2021;Zhang, et al, 2022c). Among the controlling factors of the gas bearing reservoir of Qixia Formation, beach facies sedimentation is the material basis for reservoir development, the carrier of primary pores and soluble minerals, and will affect all diagenetic transformation after sedimentation (Hu et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Research on distribution characteristics of sedimentary microfacies of a system tract under a high resolution sequence framework: A case study of Qixia Formation in Gaomo block, central Sichuan

Liu

Zhang²,

Xu³

et al. 2023

Front. Earth Sci.

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In conventional sequence stratigraphy research, owing to the limitation of the resolution of seismic data, strata can only be divided into third order sequences at most on the seismic profile. In this study, the vertical fourth order sequence is divided using the high vertical resolutions of gamma ray (GR), uranium (U), thorium (Th), and potassium (K) curves in the logging curves, and the sequence divided in the depth system is then accurately superimposed on the seismic profile through one dimensional forward modelling. Subsequently, through three dimensional Fourier transform technology, the dip angle and azimuth information of the seismic data in the entire region are scanned to obtain the horizons. Through the progradation and retrogradation characteristics of sediments in the Wheeler system, guided by the sequence framework, the horizontal interpretation of the fourth order sequence system tract is conducted in the entire region. Finally, through attribute optimisation, the root mean square amplitude attribute, with the highest degree of coincidence with well data, is selected to study the evolution characteristics of sedimentary microfacies in different periods in the four system tracts. Notably, the strata of Qixia Formation in the study area can be divided into two-fourth order sequences, wherein SQ1 comprised transgressive systems tract 1 (TST1) and high stand systems tract 1 (HST1), and SQ2 comprised TST2 and HST2. With the change in the relative sea level cycle, the strata of Qixia Formation in the study area are developed by overlapping the sedimentary microfacies of the interbank depression, interbank sea, and intraplatform shoal from bottom to top.

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Global Chert Database: A summary record of global chert samples

Wang,

Zhong,

Yan

et al. 2024

Geoscience Data Journal

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Chert is a sedimentary rock abundant and conspicuous throughout the geologic record. It serves as an essential geological archive and is vital for palaeogeographic reconstruction. The Chert Database Working Group is part of the OneSediment Working Groups of the Deep‐time Digital Earth (DDE) Big Science Program. To facilitate the sharing of chert information and promote chert research, we have compiled a summary of literature containing chert information worldwide and established the Global Chert Database (GCDB). The main body of the current database consists of seven data tables, each providing details on references, lithology, depositional age, geographic location, depositional environment and geochemical information for each sample. As of December 2023, the GCDB contains 8417 sample data from 617 pieces of literature, which can be downloaded from the ‘DDE Data Publish & Repository’.

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Geochemical characteristics and geological significance of chert nodules in Qixia formation, Pingding Mountain, lower Yangtze Plate

Cited by 4 publications

References 74 publications

Chemical Characteristics of Coil Heavy Metal Elements and Ecological Security Risks Caused by Fertilization

Chemical Characteristics of Coil Heavy Metal Elements and Ecological Security Risks Caused by Fertilization

Research on distribution characteristics of sedimentary microfacies of a system tract under a high resolution sequence framework: A case study of Qixia Formation in Gaomo block, central Sichuan

Global Chert Database: A summary record of global chert samples

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