Geodynamic Reconstruction of the Winston Lake Greenstone Belt and VMS Deposits: New Trace Element Geochemistry and U-Pb Geochronology

2014 ◽  
Vol 109 (5) ◽  
pp. 1291-1313 ◽  
Author(s):  
R. W. D. Lodge ◽  
H. L. Gibson ◽  
G. M. Stott ◽  
J. M. Franklin ◽  
M. A. Hamilton
Keyword(s):  
Trace Element ◽  
Greenstone Belt ◽  
Trace Element Geochemistry ◽  
Element Geochemistry ◽  
Vms Deposits

scholarly journals Trace element geochemistry of sphalerite and chalcopyrite in arc-hosted VMS deposits

2021 ◽  
pp. 106882
Author(s):  
Lisard Torró ◽  
Diego Benites ◽  
Jean Vallance ◽  
Oscar Laurent ◽  
Brayam A. Ortiz-Benavente ◽  
...  
Keyword(s):  
Trace Element ◽  
Trace Element Geochemistry ◽  
Element Geochemistry ◽  
Vms Deposits

Trace element geochemistry of the Meen-Dempster greenstone belt, Uchi subprovince, Superior Province, Canada: back-arc development on the margins of an Archean protocontinent

2000 ◽  
Vol 37 (7) ◽  
pp. 1021-1038 ◽  
Author(s):  
Pete Hollings ◽  
Greg Stott ◽  
Derek Wyman
Keyword(s):  
Trace Element ◽  
Greenstone Belt ◽  
Volcanic Rocks ◽  
Tholeiitic Basalt ◽  
Pyroclastic Flows ◽  
Trace Element Geochemistry ◽  
Element Geochemistry ◽  
Lree Enrichment ◽  
Compositional Diversity ◽  
Back Arc

Comprehensive trace element analyses of mafic and felsic volcanic rocks from the 2.85-2.74 Ga Meen-Dempster greenstone belt reveal a wide compositional diversity. The ~2.85 Ga Kaminiskag assemblage is dominated by mafic tholeiite characterized by predominantly unfractionated REE (La/Smn = 0.8-1.1). Rare intermediate and felsic pyroclastic flows (SiO2 = 62-74) with moderate to pronounced LREE enrichment are intercalated with the tholeiite. The Kaminiskag assemblage is overlain by the ~2825 Ma Meen assemblage, comprising dominantly dacitic tuffs and pyroclastic breccia, displaying enriched LREE (La/Smn = 3.7-7.2) and moderately fractionated HREE, in conjunction with pronounced negative Nb anomalies. Five distinct suites have been recognized in the ~2740 Ma Confederation assemblage: (1) tholeiitic basalt with flat to smoothly depleted REE, (2) tholeiite with flat to weakly depleted LREE in conjunction with pronounced negative Nb anomalies, (3) Fe-rich basalt with elevated Ti and P contents, LREE enrichment, and fractionated HREE, (4) LREE enriched basalt and andesite with negative Nb anomalies, and (5) dacite and rhyolite with enriched LREE, moderately fractionated HREE, and variable high field strength element anomalies. The geochemistry and geochronology of the Kaminiskag and Meen assemblages are consistent with the formation of an oceanic back arc (Kaminiskag assemblage), which formed the basement for a subduction-related arc complex (Meen assemblage) after a 15 Ma hiatus. The Confederation assemblage is interpreted to represent an Archean back arc, where the complex interplay of mantle sources allows for the eruption of tholeiite, subduction-modified tholeiite, ocean island basalt-like basalt, and subduction-related arc-type volcanic rocks. The recognition of back-arc basins within the Meen-Dempster greenstone belt emphasizes a continuity of crustal growth processes from the Archean to the present day.

Mineralogy and trace-element geochemistry of sulfide minerals in hydrothermal chimneys from the Upper-Cretaceous VMS deposits of the eastern Pontide orogenic belt (NE Turkey)

2014 ◽  
Vol 63 ◽  
pp. 129-149 ◽  
Author(s):  
Mustafa Kemal Revan ◽  
Yurdal Genç ◽  
Valeriy V. Maslennikov ◽  
Svetlana P. Maslennikova ◽  
Ross Raymond Large ◽  
...  
Keyword(s):  
Trace Element ◽  
Upper Cretaceous ◽  
Sulfide Minerals ◽  
Orogenic Belt ◽  
Trace Element Geochemistry ◽  
Element Geochemistry ◽  
Vms Deposits
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