Role of percolating melts in Antarctic subcontinental lithospheric mantle: New insights from Handler Ridge mantle xenoliths (northern Victoria Land, Antarctica)

2017 ◽  
pp. 133-150
Author(s):  
Beatrice Pelorosso ◽  
Costanza Bonadiman ◽  
Massimo Coltorti ◽  
Massimiliano Melchiorre ◽  
Pier Paolo Giacomoni ◽  
...  
Keyword(s):  
Lithospheric Mantle ◽  
Mantle Xenoliths ◽  
Subcontinental Lithospheric Mantle ◽  
Victoria Land

Nature and evolution of the northern Victoria Land lithospheric mantle (Antarctica) as revealed by ultramafic xenoliths

2021 ◽  
pp. M56-2020-11
Author(s):  
Massimo Coltorti ◽  
Costanza Bonadiman ◽  
Federico Casetta ◽  
Barbara Faccini ◽  
Pier Paolo Giacomoni ◽  
...  
Keyword(s):  
Lithospheric Mantle ◽  
Evolutionary History ◽  
Major Elements ◽  
Mantle Xenoliths ◽  
Victoria Land ◽  
Ultramafic Xenoliths ◽  
Large Sector ◽  
Subcontinental Lithosphere ◽  
Comparative Manner

AbstractA review of northern Victoria Land ultramafic xenoliths, collected and studied over more than 30 years, was carried out. More than 200 samples were gathered and characterized in a coherent and comparative manner, both for mantle-derived and cumulate xenoliths. Almost 2000 analyses of major elements and more than 300 analyses of trace elements of in situ and separated olivine, pyroxenes, amphibole, spinel and glass were taken into consideration. Particular attention was devoted to mantle lithologies in order to emphasize the composition and the evolution of this portion of the subcontinental lithosphere. The three main localities in northern Victoria Land where mantle xenoliths were found (i.e. Mount Melbourne (Baker Rocks), Greene Point and Handler Ridge), over a >200 km distance, were described and compared with ultramafic xenoliths in three other localities (Harrow Peaks, Browning Pass and Mount Overlord) that are mainly cumulate in nature. Altogether, these data enabled us to reconstruct a long evolutionary history, from old depletion to most recent refertilization and metasomatic events, for this large sector of the northern Victoria Land subcontinental lithospheric mantle.

HFSE and REE Geochemistry and Nd-Sr-Os Systematics of Peridotites in the Subcontinental Lithospheric Mantle of the Siberian Craton and Central Asian Fold Belt Junction Area: Data on Mantle Xenoliths

Petrology ◽  
2020 ◽  
Vol 28 (2) ◽  
pp. 207-219
Author(s):  
L. P. Nikitina ◽  
A. G. Goncharov ◽  
E. S. Bogomolov ◽  
B. V. Beliatsky ◽  
R. Sh. Krimsky ◽  
...  
Keyword(s):  
Siberian Craton ◽  
Lithospheric Mantle ◽  
Mantle Xenoliths ◽  
Subcontinental Lithospheric Mantle ◽  
Central Asian Fold Belt ◽  
Fold Belt ◽  
Junction Area ◽  
Ree Geochemistry ◽  
Central Asian ◽  
Area Data

scholarly journals Alkaline and Carbonate-rich Melt Metasomatism and Melting of Subcontinental Lithospheric Mantle: Evidence from Mantle Xenoliths, NE Bavaria, Bohemian Massif

2013 ◽  
Vol 54 (12) ◽  
pp. 2597-2633 ◽  
Author(s):  
LukአAckerman ◽  
Petr ŠpaČek ◽  
TomአMagna ◽  
JaromÍr Ulrych ◽  
Martin Svojtka ◽  
...  
Keyword(s):  
Bohemian Massif ◽  
Lithospheric Mantle ◽  
Mantle Xenoliths ◽  
Subcontinental Lithospheric Mantle

Redox state of subcontinental lithospheric mantle and relationships with metasomatism: insights from spinel peridotites from northern Victoria Land (Antarctica)

2012 ◽  
Vol 164 (6) ◽  
pp. 1053-1067 ◽  
Author(s):  
Cristina Perinelli ◽  
Giovanni B. Andreozzi ◽  
Aida M. Conte ◽  
Roberta Oberti ◽  
Pietro Armienti
Keyword(s):  
Lithospheric Mantle ◽  
Redox State ◽  
Subcontinental Lithospheric Mantle ◽  
Victoria Land

Evolution of subcontinental lithospheric mantle beneath eastern China: Re–Os isotopic evidence from mantle xenoliths in Paleozoic kimberlites and Mesozoic basalts

2007 ◽  
Vol 155 (3) ◽  
pp. 271-293 ◽  
Author(s):  
Hong-Fu Zhang ◽  
Steven L. Goldstein ◽  
Xin-Hua Zhou ◽  
Min Sun ◽  
Jian-Ping Zheng ◽  
...  
Keyword(s):  
Lithospheric Mantle ◽  
Eastern China ◽  
Mantle Xenoliths ◽  
Subcontinental Lithospheric Mantle ◽  
Isotopic Evidence

Fe-Cu-S rich melts in the subcontinental lithospheric mantle: insight from the Lower Silesian (SW Poland) xenoliths

2020 ◽  
Author(s):  
Hubert Mazurek ◽  
Jakub Ciążela ◽  
Magdalena Matusiak-Małek ◽  
Jacek Puziewicz ◽  
Theodoros Ntaflos
Keyword(s):  
Lithospheric Mantle ◽  
Volcanic Rocks ◽  
Oceanic Lithosphere ◽  
Mantle Xenoliths ◽  
Subcontinental Lithospheric Mantle ◽  
Origin And Evolution ◽  
Depleted Mantle ◽  
Group A ◽  
Sw Poland ◽  
Group B

<p>Migration of strategic metals through the lithospheric mantle can be tracked by sulfides in mantle xenoliths. Cenozoic mafic volcanic rocks from the SW Poland (Lower Silesia, Bohemian Massif) host a variety of subcontinental lithospheric mantle (SCLM) xenoliths. To understand metal migration in the SCLM we studied metal budget of peridotites from the Wilcza Góra basanite and their metasomatic history.</p><p>The Wilcza Góra xenoliths are especially appropriate to study metasomatic processes as they consist of 1) peridotites with Ol<sub>Fo=89.1-91.5 </sub>representing depleted mantle (group A); 2) peridotites with Ol<sub>Fo=84.2-89.2</sub> representing melt-metasomatized mantle (group B), as well as 3) hornblende-clinopyroxenites and websterites with Ol<sub>Fo=77.2-82.5</sub> representing former melt  channels (group C; Matusiak-Małek et al., 2017). The inherent sulfides are either interstitial or enclosed in the silicates. High-temperature exsolutions of pyrrhotite (Po), pentlandite (Pn) and chalcopyrite (Ccp) indicate magmatic origin of the sulfides.</p><p>The three peridotitic groups differ by sulfide mode and composition. The sulfide modes are enhanced in group C (0.022-0.963 vol.‰) and group B (<0.028 vol. ‰) with respect to group A (<0.002 vol.‰). The sulfides of group C are Ni-poor and Fe-Cu-rich as reflected in their mineral composition (Po<sub>55-74</sub>Ccp<sub>1-2</sub>Pn<sub>24-44</sub> in group A, Po<sub>67-85</sub>Ccp<sub>1-6</sub>Pn<sub>14-33</sub>, in group B and Po<sub>80-97</sub>Ccp<sub>1-7</sub>Pn<sub>2-20 </sub>in group C) and major element chemical composition. Ni/(Ni+Fe) of pentlandite is the lowest in group C (~0.25) and the highest in group A (0.54-0.61). Cu/(Cu+Fe) of chalcopyrite is 0.32-0.49 in group C contrasting to~0.50 in groups A and B. </p><p>The sulfide-rich xenoliths of group C indicate an important role of pyroxenitic veins in transporting Fe-Cu-S-rich melts from the upper mantle to the crust. However, the moderately enhanced sulfide modes in melt-mantle reaction zones represented by xenoliths of group B demonstrate that the upper continental mantle is refertilized with these melts during their ascent. Hence, significant portion of S and metals remains in the mantle never reaching the crust, as has been previously observed in the oceanic lithosphere (Ciazela et al., 2018).</p><p> </p><p><strong>Acknowledgments:</strong> This study was supported by the NCN project no. UMO-2014/15/B/ST10/00095. The EPMA analyses were funded from the Polish-Austrian project WTZ PL 08/2018.</p><p> </p><p><strong>References:</strong></p><p>Ciazela, J., Koepke, J., Dick, H. J. B., Botcharnikov, R., Muszynski, A., Lazarov, M., Schuth, S., Pieterek, B. & Kuhn, T. (2018). Sulfide enrichment at an oceanic crust-mantle transition zone: Kane Megamullion (23 N, MAR). Geochimica et Cosmochimica Acta, 230, 155-189</p><p>Matusiak-Małek, M., Puziewicz, J., Ntaflos, T., Grégoire, M., Kukuła, A. & Wojtulek P.   M. (2017). Origin and evolution of rare amphibole-bearing mantle peridotites from Wilcza Góra (SW Poland), Central Europe. Lithos 286–287, 302–323.</p>

Slab-derived components in the subcontinental lithospheric mantle beneath Chilean Patagonia: Geochemistry and Sr–Nd–Pb isotopes of mantle xenoliths and host basalt

Lithos ◽  
2017 ◽  
Vol 292-293 ◽  
pp. 179-197 ◽  
Author(s):  
Tiago Jalowitzki ◽  
Fernanda Gervasoni ◽  
Rommulo V. Conceição ◽  
Yuji Orihashi ◽  
Gustavo W. Bertotto ◽  
...  
Keyword(s):  
Lithospheric Mantle ◽  
Mantle Xenoliths ◽  
Pb Isotopes ◽  
Subcontinental Lithospheric Mantle ◽  
Chilean Patagonia ◽  
Host Basalt
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