Probing the history of UHT metamorphism through rare earth element diffusion in zircon

2021 ◽  
Author(s):  
E. Blereau ◽  
C. Clark ◽  
P. D. Kinny ◽  
E. Sansom ◽  
R. J. M. Taylor ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Earth Element ◽  
Element Diffusion ◽  
History Of ◽  
Uht Metamorphism

Quantitative trace-element modelling of the crystallization history of the Kinojévis and Blake River groups, Abitibi Greenstone Belt, Ontario

1989 ◽  
Vol 26 (7) ◽  
pp. 1356-1367 ◽  
Author(s):  
A. D. Fowler ◽  
L. S. Jensen
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Fractional Crystallization ◽  
Earth Element ◽  
Calc Alkaline ◽  
Quantitative Modelling ◽  
Ti Oxides ◽  
History Of ◽  
High Level ◽  
Ree Patterns

The Archean tholeiitic Kinojévis suite is characterized by an iron-enrichment trend and abundant Fe–Ti oxides in its evolved basalts, andesites, and rhyolites. The rare-earth-element (REE) patterns of the suite remain flat from the basalts through to the rhyolites, with the development of small, negative Eu anomalies. Quantitative modelling of the trace elements from little-altered samples is consistent with the mineralogy, suggesting that the suite was produced through fractional crystallization of olivine, pyroxene, plagioclase, and Fe–Ti oxides. The evolved rhyolites are interpreted as having developed by greater than 90% fractional crystallization in a high-level magma chamber.The calc-alkaline Blake River Group conformably overlies the Kinojévis rocks and is characterized by enrichment in alkalis and silica. The REE patterns are light rare-earth-element (LREE) enriched, and the felsic rocks have prominent negative Eu anomalies. Geochemical modelling shows that the suite could have developed either through fractional crystallization dominated by plagioclase and clinopyroxene or by assimilation of tonalite, coupled with fractional crystallization.

Rare earth element diffusion in natural enstatite

2007 ◽  
Vol 71 (5) ◽  
pp. 1324-1340 ◽  
Author(s):  
Daniele J. Cherniak ◽  
Yan Liang
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Earth Element ◽  
Element Diffusion

Rare earth element diffusion in a natural pyrope single crystal at 2.8 GPa

2002 ◽  
Vol 142 (4) ◽  
pp. 416-424 ◽  
Author(s):  
James A. Van Orman ◽  
Timothy L. Grove ◽  
Nobumichi Shimizu ◽  
Graham D. Layne
Keyword(s):  
Rare Earth ◽  
Single Crystal ◽  
Rare Earth Element ◽  
Earth Element ◽  
Element Diffusion
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