Magmatic evolution of compositionally heterogeneous monogenetic Cenozoic Strzelin Volcanic Field (Fore-Sudetic Block, SW Poland)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F16%3A00000184" target="_blank" >RIV/00025798:_____/16:00000184 - isvavai.cz</a>

Result on the web

<a href="http://www.jgeosci.org/content/jgeosci.221_awdankiewicz.pdf" target="_blank" >http://www.jgeosci.org/content/jgeosci.221_awdankiewicz.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3190/jgeosci.221" target="_blank" >10.3190/jgeosci.221</a>

Result language

angličtina

Original language name

Magmatic evolution of compositionally heterogeneous monogenetic Cenozoic Strzelin Volcanic Field (Fore-Sudetic Block, SW Poland)

Original language description

Erosional remnants of the Miocene Strzelin Volcanic Field in SW Poland were studied in terms of volcanology, petrology and Sr–Nd–Pb isotope geochemistry with the aim to identify the reasons for compositional variability of monogenetic volcanoes. The obtained data suggest that a heterogeneous mantle peridotite (with mixed DM/HIMU signature) was the dominant source of magmas. Partial melting and segregation of magmas in diapirically rising asthenosphere occurred within the garnet stability field. The source heterogeneity was the basic cause that controlled the compositional variability of the primary magmas, and also influenced the subsequent differentiation processes and eruptive styles. On the surface, additional role was played by variable environments (i.e. phreatomagmatic eruptions in water-saturated environments). More fertile mantle domains, with prevailing HIMU component, released melts deeper, at lower degrees of partial melting and small magma batches were formed. These nephelinitic magmas underwent only limited fractional crystallization en route to the surface and erupted with low explosivity as lava flows. In contrast, less fertile mantle domains, dominated by the DM component, released melts at higher degrees of partial melting at a shallower depth. This resulted in a more sustained magma supply that further enhanced the development of shallow-level magmatic systems, with more advanced and complex differentiation: larger degrees of fractional crystallization as well as replenishment by new batches of primitive magma. The resulting basaltic and trachybasaltic volcanoes showed a greater diversity of eruptive styles, including effusive and variably explosive eruptions.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DB - Geology and mineralogy

OECD FORD branch

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Project

<a href="/en/project/GAP210%2F12%2F1990" target="_blank" >GAP210/12/1990: Continental lithosphere as a source of differentiated alkaline lavas and genetic role of basic magmas constraints from volcanism of the Ohře Graben</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Geosciences

ISSN

1802-6222

e-ISSN

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Volume of the periodical

61

Issue of the periodical within the volume

4

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

26

Pages from-to

425-450

UT code for WoS article

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EID of the result in the Scopus database

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