Two Contrasting Lithologies in Off-rift Subcontinental Lithospheric Mantle beneath Central Europe--the Krzeniow (SW Poland) Case Study

2014 ◽  
Vol 55 (9) ◽  
pp. 1799-1828 ◽  
Author(s):  
M. Matusiak-Ma ek ◽  
J. Puziewicz ◽  
T. Ntaflos ◽  
M. Gregoire ◽  
M. Benoit ◽  
...  
Keyword(s):  
Central Europe ◽  
Lithospheric Mantle ◽  
Subcontinental Lithospheric Mantle ◽  
Sw Poland

Thermal and metasomatic rejuvenation and dunitization in lithospheric mantle beneath Central Europe – The Grodziec (SW Poland) case study

Lithos ◽  
2017 ◽  
Vol 276 ◽  
pp. 15-29 ◽  
Author(s):  
Magdalena Matusiak-Małek ◽  
Mateusz Ćwiek ◽  
Jacek Puziewicz ◽  
Theodoros Ntaflos
Keyword(s):  
Central Europe ◽  
Lithospheric Mantle ◽  
Sw Poland

scholarly journals Metasomatic effects in the lithospheric mantle beneath the NE Bohemian Massif: A case study of Lutynia (SW Poland) peridotite xenoliths

Lithos ◽  
2010 ◽  
Vol 117 (1-4) ◽  
pp. 49-60 ◽  
Author(s):  
Magdalena Matusiak-Małek ◽  
Jacek Puziewicz ◽  
Theodoros Ntaflos ◽  
Michel Grégoire ◽  
Hilary Downes
Keyword(s):  
Bohemian Massif ◽  
Lithospheric Mantle ◽  
Peridotite Xenoliths ◽  
Sw Poland

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>

scholarly journals Lithospheric Mantle Modification during Cenozoic Rifting in Central Europe: Evidence from the Księginki Nephelinite (SW Poland) Xenolith Suite

2011 ◽  
Vol 52 (11) ◽  
pp. 2107-2145 ◽  
Author(s):  
Jacek Puziewicz ◽  
Jürgen Koepke ◽  
Michel Grégoire ◽  
Theodoros Ntaflos ◽  
Magdalena Matusiak-Małek
Keyword(s):  
Central Europe ◽  
Lithospheric Mantle ◽  
Sw Poland

scholarly journals Subcontinental lithospheric mantle beneath Central Europe

2014 ◽  
Vol 104 (8) ◽  
pp. 1913-1924 ◽  
Author(s):  
Jacek Puziewicz ◽  
Magdalena Matusiak-Małek ◽  
Theodoros Ntaflos ◽  
Michel Grégoire ◽  
Anna Kukuła
Keyword(s):  
Central Europe ◽  
Lithospheric Mantle ◽  
Subcontinental Lithospheric Mantle
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