Rare-earth element geochemistry of eclogites from the ultra-high pressure metamorphic belt in central China

2000 ◽  
Vol 19 (1) ◽  
pp. 35-44 ◽  
Author(s):  
Zhilong Huang ◽  
Congqiang Liu ◽  
Yaoguo Hu ◽  
Jianming Zhu ◽  
Huayun Xiao ◽  
...  
Keyword(s):  
High Pressure ◽  
Rare Earth ◽  
Rare Earth Element ◽  
Earth Element ◽  
Central China ◽  
Element Geochemistry ◽  
Metamorphic Belt ◽  
Ultra High Pressure

High-pressure, synthetic loveringite-davidite and its rare earth element geochemistry

1987 ◽  
Vol 51 (359) ◽  
pp. 145-149 ◽  
Author(s):  
T. H. Green ◽  
N. J. Pearson
Keyword(s):  
High Pressure ◽  
Rare Earth ◽  
Rare Earth Element ◽  
Basaltic Andesite ◽  
Upper Mantle ◽  
Partition Coefficients ◽  
Earth Element ◽  
Element Geochemistry ◽  
High Pressure And Temperature ◽  
The Stability

AbstractLoveringite-davidite members of the crichtonite group were synthesized at high pressure and temperature (7.5 kbar, 1000–1050 °C) from a melt of TiO2 and rare earth element (REE) enriched basaltic andesite composition. Four sets of partition coefficients for La, Srn, Ho, Lu and Sr (analogue for Eu2+) were obtained. These show that light and heavy REE are readily accommodated, but the intermediate REE are discriminated against in the loveringite—davidite structure. This confirms the previously proposed two sites (A and M) for REE substitution in the crichtonite group. Additional experiments verified the stability of REE-rich crichtonite group minerals to 20 kbar, 1300 °C and 30 kbar, 1000 °C, and indicate that this phase may be an important accessory repository for the light and heavy REE in the upper mantle.

Trace and rare earth element geochemistry of the Upper Triassic mudstones in the southern Ordos Basin, Central China

2014 ◽  
Vol 50 (4) ◽  
pp. 399-413 ◽  
Author(s):  
Xin-Wei Qiu ◽  
Chi-Yang Liu ◽  
Fei-Fei Wang ◽  
Yu Deng ◽  
Guang-Zhou Mao
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Earth Element ◽  
Ordos Basin ◽  
Upper Triassic ◽  
Central China ◽  
Element Geochemistry

Trace and rare earth element geochemistry of Jurassic mudstones in the northern Qaidam Basin, northwest China

Geochemistry ◽  
2012 ◽  
Vol 72 (3) ◽  
pp. 245-252 ◽  
Author(s):  
Jian Cao ◽  
Ming Wu ◽  
Yan Chen ◽  
Kai Hu ◽  
Lizeng Bian ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Earth Element ◽  
Qaidam Basin ◽  
Northwest China ◽  
Element Geochemistry
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