Rare earth element fractionation and concentration variations along a groundwater flow path within a shallow, basin-fill aquifer, southern Nevada, USA

1999 ◽  
Vol 63 (18) ◽  
pp. 2697-2708 ◽  
Author(s):  
Kevin H. Johannesson ◽  
Irene M. Farnham ◽  
Caixia Guo ◽  
Klaus J. Stetzenbach
Keyword(s):  
Rare Earth ◽  
Groundwater Flow ◽  
Rare Earth Element ◽  
Earth Element ◽  
Flow Path ◽  
Southern Nevada ◽  
Shallow Basin ◽  
Element Fractionation ◽  
Basin Fill

Unusual rare earth element fractionation in a tin-bearing magmatic-hydrothermal system

Geology ◽  
2011 ◽  
Vol 39 (4) ◽  
pp. 295-298 ◽  
Author(s):  
Thomas Monecke ◽  
Ulf Kempe ◽  
Michael Trinkler ◽  
Rainer Thomas ◽  
Peter Dulski ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Hydrothermal System ◽  
Earth Element ◽  
Element Fractionation

Geochemical evolution in the Blake River Group, Abitibi Greenstone Belt, Superior Province

1980 ◽  
Vol 17 (9) ◽  
pp. 1292-1299 ◽  
Author(s):  
I. E. M. Smith
Keyword(s):  
Rare Earth ◽  
Volcanic Rock ◽  
Rare Earth Element ◽  
Greenstone Belt ◽  
Earth Element ◽  
Superior Province ◽  
Calc Alkaline ◽  
Abitibi Greenstone Belt ◽  
Rock Types ◽  
Element Fractionation

In well exposed, well developed greenstone belts of the Superior Province there is a clear progression from stratigraphically lower, geochemically primitive volcanic rock types (komatiites, tholeiites) to overlying geochemically evolved calc-alkaline volcanic rock types. In the western Blake River Group of the Abitibi Greenstone Belt the change from tholeiitic to calc-alkaline volcanics represents a geochemical discontinuity defined by an increase in incompatible elements and light/heavy rare-earth element fractionation in the overlying rocks. Quantitative modelling of the parameters of the discontinuity indicates that it can be explained by a change to very small amounts of melting of unmodified mantle lherzolite, although this is not a unique solution. In calc-alkaline suites showing high degrees of rare-earth element fractionation the calculated melt fraction required of unmodified mantle becomes unrealistically low and models involving a geochemically evolved source may have to be considered.

scholarly journals Microprobe analyses of rare earth element fractionation in meteoritic minerals

1984 ◽  
Vol 3 (1-3) ◽  
pp. 677-680 ◽  
Author(s):  
T.M. Benjamin ◽  
C.J. Duffy ◽  
C.J. Maggiore ◽  
P.S.Z. Rogers ◽  
D.S. Woolum ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Earth Element ◽  
Element Fractionation

MORB alteration: Rare-earth element/non-rare-earth hygromagmaphile element fractionation

1990 ◽  
Vol 82 ◽  
pp. 1-14 ◽  
Author(s):  
P. Bienvenu ◽  
H. Bougault ◽  
J.L. Joron ◽  
M. Treuil ◽  
L. Dmitriev
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Earth Element ◽  
Element Fractionation

Rare earth element fractionation in magmatic Ca-rich garnets

2007 ◽  
Vol 154 (1) ◽  
pp. 55-74 ◽  
Author(s):  
Birgit Scheibner ◽  
Gerhard Wörner ◽  
Lucia Civetta ◽  
Heinz-Günter Stosch ◽  
Klaus Simon ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Earth Element ◽  
Element Fractionation
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