Enrichment and Release of Rare Earth Elements during Weathering of Sedimentary Rocks in Wujiang Catchments, Southwest China

2006 ◽  
Vol 24 (4) ◽  
pp. 491-496 ◽  
Author(s):  
Zhaoliang Song ◽  
Congqiang Liu ◽  
Guilin Han ◽  
Zhongliang Wang ◽  
Zhaozhou Zhu ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Southwest China ◽  
Sedimentary Rocks

scholarly journals Geochemical Characteristics of Rare Earth Elements in Soils from Puding Karst Critical Zone Observatory, Southwest China

2019 ◽  
Vol 11 (18) ◽  
pp. 4963 ◽  
Author(s):  
Qian Zhang ◽  
Guilin Han ◽  
Man Liu ◽  
Lingqing Wang
Keyword(s):  
Rare Earth ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Rare Earth Elements ◽  
Southwest China ◽  
Clay Content ◽  
Critical Zone ◽  
Fe Content ◽  
Local Soil ◽  
Critical Zone Observatory

Soil samples from eight soil profiles under different land-use types were collected at the Puding Karst Critical Zone Observatory, Southwest China, to investigate the distribution, fractionation, and controlling factors of rare earth elements (REEs). The total REEs contents in topsoil ranged from 149.97 to 247.74 mg kg−1, the contents in most topsoil were higher than local soil background value (202.60 mg kg−1), and the highest content was observed in topsoil under cropland. The REEs contents in surface soils from lower slopes sites were higher than that of middle and upper slope sites, and the highest contents were observed in cropland. The PAAS-normalized REEs pattern in soils showed MREEs significantly enriched relative to LREEs and HREEs, and HREEs were enriched relative to LREEs. The results showed that clay content, pH, soil organic carbon, total phosphorus, and Fe content were the main factors influencing the distribution of REEs in karst soils, and soil organic carbon (SOC), Fe content showed better linear relationship with REEs.

Sources and control factors of rare earth elements in Late Permian mudstones, Southwest China

2012 ◽  
Vol 19 (6) ◽  
pp. 1741-1752 ◽  
Author(s):  
Ming-guo Xiao ◽  
Xin-guo Zhuang ◽  
Wei Yi ◽  
Wan-hui Mao
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Southwest China ◽  
Late Permian ◽  
Control Factors ◽  
And Control
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