Late Carboniferous-Early Permian palynology of Baode (Pao-te-chou) in Shanxi Province, North China

2008 ◽  
Vol 43 (4) ◽  
pp. 487-510 ◽  
Author(s):  
Liu Feng ◽  
Zhu Huaicheng ◽  
Ouyang Shu
Keyword(s):  
North China ◽  
Late Carboniferous ◽  
Shanxi Province ◽  
Early Permian

Giant cordaitalean trees in early Permian riparian canopies in North China: Evidence from anatomically preserved trunks in Yangquan, Shanxi Province

Palaeoworld ◽  
2020 ◽  
Vol 29 (3) ◽  
pp. 469-475
Author(s):  
Ming-Li Wan ◽  
Wan Yang ◽  
Shan Wan ◽  
Dan-Dan Li ◽  
Wei-Ming Zhou ◽  
...  
Keyword(s):  
North China ◽  
Shanxi Province ◽  
Early Permian

The relationship of paleontology, palaeobotany and coal thickness of Taiyuan Formation, Late Carboniferous – Early Permian in Shanxi Province

2017 ◽  
Vol 14 (2) ◽  
pp. 139-144 ◽  
Author(s):  
Wen Yang ◽  
Sherong Hu ◽  
Shimin Ma
Keyword(s):  
Design Methodology ◽  
Dominant Role ◽  
Late Carboniferous ◽  
Shanxi Province ◽  
Early Permian ◽  
Content Type ◽  
Taiyuan Formation ◽  
Coal Seam Thickness ◽  
Relationship Of ◽  
The Relationship

Purpose The purpose of this paper is to find the relationship of palaeontology, palaeobotany and coal thickness of Taiyuan Formation during Late Carboniferous – Early Permian Period in Shanxi Province. Design/methodology/approach This paper selects three regions, namely, Baode, Xishan and Lingchuan, to analyse the distribution characteristics of palaeontology, palaeobotany and variation of coal thickness. Findings It was found that in a certain period of geological history, palaeontology and palaeobotany play a dominant role in shaping of a coal-bearing basin. Coal seam thickness changes largely from the northwest to the southeast, gradually thinning in Taiyuan Formation. Originality/value Palaeontology and palaeobotany play a dominant role in the shaping of a coal-bearing basin.

Late Carboniferous-Early Permian Sequence Stratigraphy and Depositional Evolution in the Northeast Ordos Basin, North China

2010 ◽  
Vol 84 (5) ◽  
pp. 1220-1228 ◽  
Author(s):  
YANG Minghui ◽  
LIU Chiyang ◽  
LAN Chaoli ◽  
LIU Le ◽  
LI Xin ◽  
...  
Keyword(s):  
Sequence Stratigraphy ◽  
North China ◽  
Ordos Basin ◽  
Late Carboniferous ◽  
Early Permian ◽  
Depositional Evolution

Mechanism of Carboniferous-Permian transgression/regression in the east Ordos basin and associated paleoecological variability: Insight from detrital geochronology and palaeontology data

2020 ◽  
Author(s):  
Chao Fu ◽  
Xinghe Yu ◽  
Marc Jolivet ◽  
Shunli Li ◽  
Zixiao Peng ◽  
...  
Keyword(s):  
North China ◽  
Ordos Basin ◽  
Second Order ◽  
Sediment Supply ◽  
Late Carboniferous ◽  
Coarse Grained ◽  
Early Permian ◽  
The South ◽  
The North ◽  
Facies Associations

<p>Developed on the North China Craton, the intra-cratonic Ordos basin contains a complete Paleozoic to Cenozoic sediment record allowing long-term paleo-environmental and climate change investigation. During the Carboniferous-the early Permian period, convergence between the North China block and the paleo-Yangtze plate to the south lead to a general marine regression characterised by a series of second-order transgression/regression cycles diachronous along the eastern margin of the Ordos. However, the detailed mechanisms that induced these cycles, as well as the associated paleoecological changes, are still unknown. In this study, we integrated the description of numerous core samples with electric-log data and 2-D seismic data to reconstruct the sediment facies associations across the first-order regression from the Carboniferous tidal flat depositional system to the early Permian prograding fluvial delta system. δ<sup>18</sup>O, δ<sup>13</sup>C and clay content (w(Illite + Kaolinite)/w(smectite) ratio) stratigraphic variations were then used to reconstruct the paleo-sea level from the late Carboniferous to the early Permian. We conclude that the direction of second-order transgression/regression mainly stroke to the east during the late Carboniferous and switched clockwise towards the north during the early Permian. We suggest that the variability of the second-order cycles, diachronous in space and time was mainly linked to local variations in sediment supply and regional uplift.  Using detrital zircon U-Pb data, major and trace elements content and heavy minerals assemblages (HMA), we estimated the sediment provenance area. The sediment volumes deposited in the basin through time were obtained using 3Dseismic data. During the Carboniferous, the coarse-grained sediments deposited in the eastern Ordos were derived from the uplifting Helan Mountain. By the early Permian, the detrital material became multi-sourced issuing from both the Yinshan range to the north and the Qinling range to the south. During the first stage, regression was controlled by regional uplift, while the sediment supply controlled the second stage. Indeed, based on sediment dispersal volume calculation, we can infer that the sediment supply during the early Permian was more extensive than during the Late Carboniferous – early Permian. We correlate this observation to a more humid climate during the early Permian: multi- paleoecological indexes, including the sporopollenin content and microsomal type assemblage, suggest that glaciation prevailed during the Late Carboniferous – early Permian shallow-marine stage. In contrast, the early Permian alluvial and deltaic series were deposited under a warmer, interglacial climate (Sakmarian). Finally, the typical interglacial coal accumulation pattern occurs earlier than the Pennsylvanian–Permian transition it characterises around the world (Artinskian).</p>

Association of exposure to ambient air pollution with ovarian reserve among women in Shanxi province of north China

2021 ◽  
Vol 278 ◽  
pp. 116868
Author(s):  
Xiaoqin Feng ◽  
Jinhong Luo ◽  
Xiaocheng Wang ◽  
Wolong Xie ◽  
Jiao Jiao ◽  
...  
Keyword(s):  
Air Pollution ◽  
Ovarian Reserve ◽  
North China ◽  
Ambient Air ◽  
Ambient Air Pollution ◽  
Shanxi Province

scholarly journals Groundwater Quality and Potential Human Health Risk Assessment for Drinking and Irrigation Purposes: A Case Study in the Semiarid Region of North China

Water ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 783
Author(s):  
Feifei Chen ◽  
Leihua Yao ◽  
Gang Mei ◽  
Yinsheng Shang ◽  
Fansheng Xiong ◽  
...  
Keyword(s):  
Groundwater Quality ◽  
Human Health ◽  
Health Risks ◽  
North China ◽  
Shanxi Province ◽  
Hydrochemical Characteristics ◽  
Human Health Risks ◽  
Drinking And Irrigation ◽  
Hydrochemical Types ◽  
Potential Human Health

Groundwater is a valuable water source for drinking and irrigation purposes in semiarid regions. Groundwater pollution may affect human health if it is not pretreated and provided for human use. This study investigated the hydrochemical characteristics driving groundwater quality for drinking and irrigation purposes and potential human health risks in the Xinzhou Basin, Shanxi Province, North China. More specifically, we first investigated hydrochemical characteristics using a descriptive statistical analysis method. We then classified the hydrochemical types and analyzed the evolution mechanisms of groundwater using Piper and Gibbs diagrams. Finally, we appraised the groundwater quality for drinking and irrigation purposes using the entropy water quality index (EWQI). We assessed the associated human health risks for different age and sex groups through drinking intake and dermal contact pathways. Overall, we found that (1) Ca-HCO3 and Ca·Mg-HCO3 were the dominant hydrochemical types and were mainly governed by rock weathering and water–rock interactions. (2) Based on the EWQI classifications, 67.74% of the groundwater samples were classified as medium quality and acceptable for drinking purpose. According to the values of sodium adsorption ratio (SAR), residual sodium carbonate (RSC) and soluble sodium percentage (%Na), 90.32% of the samples were suitable for irrigation, while the remaining samples were unfit for irrigation because of the high salinity in the groundwater. (3) Some contaminants in the groundwater, such as NO3−, NO2− and F−, exceeded the standard limits and may cause potential risks to human health. Our work presented in this paper could establish reasonable management strategies for sustainable groundwater quality protection to protect public health.

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