Depletion, cryptic metasomatism, and modal metasomatism of central European lithospheric mantle: evidence from elemental and Li isotope compositions of spinel peridotite xenoliths, Kozákov volcano, Czech Republic

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F15%3A10313124" target="_blank" >RIV/00216208:11310/15:10313124 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985831:_____/15:00443759 RIV/00025798:_____/15:00000016

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s00531-014-1065-y" target="_blank" >http://dx.doi.org/10.1007/s00531-014-1065-y</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00531-014-1065-y" target="_blank" >10.1007/s00531-014-1065-y</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Depletion, cryptic metasomatism, and modal metasomatism of central European lithospheric mantle: evidence from elemental and Li isotope compositions of spinel peridotite xenoliths, Kozákov volcano, Czech Republic

Popis výsledku v původním jazyce

Spinel peridotite xenoliths in 4.1 Ma basanite lava at Kozákov volcano vary in equilibration temperature from 675 to 1,135 oC and provide a continuous sample of lithospheric mantle from the Moho to a depth of ~82 km. The sub-Kozákov mantle is layered, consisting of an upper equigranular layer (UEL) from 32 to 45 km, an intermediate protogranular layer (PGL) from 45 to 66 km, and a lower equigranular layer (LEL) below 66 km. Relative to primitive mantle, all three layers are depleted in major incompatible elements and heavy rare earth elements, with the UEL being most depleted among the three layers, consisting of harzburgite and having experienced >15 % fractional melting. In contrast, the PGL and LEL experienced <10-15 % melting and consist of lherzolite; the PGL and LEL overlap in major element composition, with the PGL displaying a decreasing degree of depletion with depth. Subsequent metasomatism by silicate melt led to cryptic enrichments in large-ion lithophile elements, light RE

Název v anglickém jazyce

Depletion, cryptic metasomatism, and modal metasomatism of central European lithospheric mantle: evidence from elemental and Li isotope compositions of spinel peridotite xenoliths, Kozákov volcano, Czech Republic

Popis výsledku anglicky

Spinel peridotite xenoliths in 4.1 Ma basanite lava at Kozákov volcano vary in equilibration temperature from 675 to 1,135 oC and provide a continuous sample of lithospheric mantle from the Moho to a depth of ~82 km. The sub-Kozákov mantle is layered, consisting of an upper equigranular layer (UEL) from 32 to 45 km, an intermediate protogranular layer (PGL) from 45 to 66 km, and a lower equigranular layer (LEL) below 66 km. Relative to primitive mantle, all three layers are depleted in major incompatible elements and heavy rare earth elements, with the UEL being most depleted among the three layers, consisting of harzburgite and having experienced >15 % fractional melting. In contrast, the PGL and LEL experienced <10-15 % melting and consist of lherzolite; the PGL and LEL overlap in major element composition, with the PGL displaying a decreasing degree of depletion with depth. Subsequent metasomatism by silicate melt led to cryptic enrichments in large-ion lithophile elements, light RE

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DD - Geochemie

OECD FORD obor

—

Projekt

<a href="/cs/project/GAP210%2F12%2F1990" target="_blank" >GAP210/12/1990: Kontinentální litosféra jako zdroj diferencovaných alkalických láv a genetická role bazických magmat vymezení pomocí vulkanismu oherského příkopu</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

International Journal of Earth Sciences

ISSN

1437-3254

e-ISSN

—

Svazek periodika

104

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

32

Strana od-do

1925-1956

Kód UT WoS článku

000363871200003

EID výsledku v databázi Scopus

2-s2.0-84906073850