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

Matusiak‐Małek, Magdalena; Ćwiek, Mateusz; Puziewicz, Jacek; Ntaflos, Theodoros

doi:10.1016/j.lithos.2016.08.041

Cited by 9 publications

(5 citation statements)

References 56 publications

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“…1). We used the Wilcza Góra profile because of detailed petrological descriptions of lithospheric mantle xenoliths in the vicinity (Matusiak-Małek et al 2014, 2017a which enabled to define the model of basaltic melt migration through lithosphere and to model how the advective heat disturbs the steady-state heat flow. The Polkowice-Rudna profile was used because the temperature measurements from underground shafts of copper mines enabled the calculation of heat flow independent of older data.…”

Section: Geological Setting and Rationale Of Site Selectionmentioning

confidence: 99%

“…spinel peridotite facies). The case studies of mantle xenolith suites from the area (Puziewicz et al 2011;Matusiak-Małek et al 2010, 2014, 2017aKukuła et al 2015) show that the lava flow through the mantle was channelized in fissures of centimetric to decimetric thickness, and the melt percolated pervasively in the neighbouring mantle peridotite. To model this situation, we assume that the discussed hypothetical mantle was instantly injected with melt.…”

Section: The Effect Of Advective Heat Transport On Mantle Heat Budgetmentioning

confidence: 99%

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Crustal lithology vs. thermal state and Moho heat flow across the NE part of the European Variscan orogen: a case study from SW Poland

Puziewicz

Czechowski

Grad

et al. 2019

Int J Earth Sci (Geol Rundsch)

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Geotherms of four crustal profiles across the Variscan orogen in SW Poland have been constructed to better understand the variation in thermal state of the region. Seismic and drilling data as well as rock sequences in exposed parts of the orogen were used for Wilcza Góra (Sudetic Block), Polkowice-Rudna (Middle Odra Horst), Święciechowa (Wolsztyn-Leszno Horst) and Września (Szczecin-Miechów Synclinorium within TESZ) profiles. The palaeoclimate-corrected surface heat flow map and the heat-production calculations based on literature data enabled the construction of geotherms and estimation of Moho heat flow. Exception is the Polkowice-Rudna profile, where the surface heat flow was calculated using temperature measurements in underground copper mines, and K, U and Th contents and density/heat conductivity measurements in rocks drilled in the Middle Odra Horst were used to calculate geotherm. The basaltic lava migration through the lithospheric mantle and its effect on crustal geotherm in Wilcza Góra (area of Cenozoic alkaline volcanism at ca. 30-18 Ma) was shown to increase slightly both current surface and current Moho heat flow (by ca. 4 mW/m 2). The presented approach couples geological and geophysical information and thus differs from standard purely geophysical assessment of lithosphere thermal state. It shows that surface heat flow is enlarged to 84 mW/m 2 by granitic plutons in the upper crust in the Lubin-Polkowice site. Heat flow on the Moho varies from 28 to 34 mW/m 2 in sites located in the Sudetic-/Fore-Sudetic Blocks, Middle Odra Horst and Wolsztyn-Leszno Horst. Locally it may slightly increase because of extraneous heat input by Cenozoic basaltic volcanism, but the values close to 30 mW/m 2 are specific for mantle root of Saxothuringian Zone in SW Poland. Mantle heat flow is 36 mW/m 2 in Września site and supposedly is a manifestation of different nature of lithospheric mantle underlying TESZ.

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Section: Geological Setting and Rationale Of Site Selectionmentioning

confidence: 99%

Section: The Effect Of Advective Heat Transport On Mantle Heat Budgetmentioning

confidence: 99%

Crustal lithology vs. thermal state and Moho heat flow across the NE part of the European Variscan orogen: a case study from SW Poland

Puziewicz

Czechowski

Grad

et al. 2019

Int J Earth Sci (Geol Rundsch)

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“…However, dunite could also have originated by replacement of orthopyroxene by olivine during percolation of basanitic melt in the surrounding harzburgite (Kelemen et al 1992). A similar model of dunite origin was proposed for a xenolith suite from the Grodziec locality (Matusiak-Małek et al 2017b).…”

Section: Metasomatic Events In the Pilchowice Peridotitesmentioning

confidence: 68%

“…Krzeniów xenolith suite, Matusiak-Małek et al 2014). Locally (e.g., Księginki, Grodziec) intense effects of alkaline silicate melt percolating in the mantle immediately before the Cenozoic eruptions are recorded in the mantle peridotites (Puziewicz et al 2011;Matusiak-Małek et al 2017b).…”

Section: Discussionmentioning

confidence: 99%

Lithospheric mantle beneath NE part of Bohemian Massif and its relation to overlying crust: new insights from Pilchowice xenolith suite, Sudetes, SW Poland

Ćwiek

Matusiak‐Małek

Puziewicz

et al. 2017

Int J Earth Sci (Geol Rundsch)

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The Oligocene/Miocene basanite from Pilchowice (Sudetes Mts., SW Poland) carries numerous small xenoliths of mantle peridotite, mostly harzburgite. The Pilchowice xenolith suite is dominated by harzburgites and dunites containing olivine Fo 90.2-91.5 (group A). The peridotites of group B (olivine Fo 88.6-89.4), and C (olivine Fo 83.2-86.5) are subordinate. The peridotites suffered from significant melt extraction (20-30%) and were subsequently subjected to metasomatism. Three different trace element compositional patterns of group A clinopyroxene occur, which are typical of silicate melt, carbonatite melt and silicate-carbonatite melt metasomatism, whereas groups B and C were affected by silicate melt metasomatism only. The Pilchowice basanite occurs at the contact of Karkonosze-Izera Block and Kaczawa Complex, two major geological units of Sudetes. The Pilchowice xenolith suite documents underlying lithospheric mantle of composition and depletion degree similar to those described in the whole Lower Silesian mantle domain, which forms NE termination of Saxo-Thuringian zone of the European Variscan orogen. The crustal structure of the orogen is, therefore, not mirrored in the mantellic root.

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“…The automated mineral analysis, which integrates SEM and energy-dispersive X-ray spectrometry (EDS), provides unattended, reproducible and operator-independent mineral and phase maps of relatively large areas [3]. It has been already applied to a wide range of geological materials, including, e.g., igneous rocks, [4] raw materials [5] and sedimentary rocks [6]. However, the automated SEM-EDS analyzers have been used only a few times in the loess research [7][8][9], and to our best knowledge never in Europe, especially for the specific loess material.…”

Section: Introductionmentioning

confidence: 99%

A new methodological approach (QEMSCAN^®) in the mineralogical study of Polish loess: Guidelines for further research

et al. 2020

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This article presents in detail the methodology dedicated strictly to loess mineralogical investigation by automated mineralogy system QEMSCAN® (quantitative evaluation of minerals by scanning electron microscopy (SEM)), which couples SEM and energy dispersive X-ray spectrometry to automatically deliver mineral and phase mapping. The present study provides guidelines for further loess investigation in Poland, in order to maintain the complete comparability of results which will be obtained. The methodology is then used to obtain the data on complex mineralogical composition (heavy, light, transparent and opaque phases). In total 1,159,107 particles have been measured for five bulk loess samples and 4–6% of them were heavy minerals (c.a. 10,000 per sample). The bulk samples are dominated by quartz (57.3–62.9%) and contain plagioclase (7.8–9.2%), K-feldspar (7.9–8.7%), carbonates (5.0–7.8%), muscovite (3.2–6.2%), biotite (4.2–7.5%), heavy minerals (4.3–5.8%) and clay minerals (0.9–1.6%). The heavy minerals (as a group recalculated to 100%) are mainly represented by phases such as clinopyroxene (38–51%), garnets (14–21%), TiO2 polymorphs (8–12%), Al2SiO5 polymorphs (3–7%), ilmenite (3–6%), iron oxides, e.g., hematite and magnetite (2–5%) and zircon (∼2%). Nearly 50% of the heavy minerals is classified in the 16–31 µm fraction, which determine the changes in the current research procedure traditionally used for Polish loess.

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

Cited by 9 publications

References 56 publications

Crustal lithology vs. thermal state and Moho heat flow across the NE part of the European Variscan orogen: a case study from SW Poland

Crustal lithology vs. thermal state and Moho heat flow across the NE part of the European Variscan orogen: a case study from SW Poland

Lithospheric mantle beneath NE part of Bohemian Massif and its relation to overlying crust: new insights from Pilchowice xenolith suite, Sudetes, SW Poland

A new methodological approach (QEMSCAN^®) in the mineralogical study of Polish loess: Guidelines for further research

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

Cited by 9 publications

References 56 publications

Crustal lithology vs. thermal state and Moho heat flow across the NE part of the European Variscan orogen: a case study from SW Poland

Crustal lithology vs. thermal state and Moho heat flow across the NE part of the European Variscan orogen: a case study from SW Poland

Lithospheric mantle beneath NE part of Bohemian Massif and its relation to overlying crust: new insights from Pilchowice xenolith suite, Sudetes, SW Poland

A new methodological approach (QEMSCAN®) in the mineralogical study of Polish loess: Guidelines for further research

Contact Info

Product

Resources

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A new methodological approach (QEMSCAN^®) in the mineralogical study of Polish loess: Guidelines for further research