Origin of carbonatites in the South Qinling orogen: Implications for crustal recycling and timing of collision between the South and North China Blocks

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F14%3A00224515" target="_blank" >RIV/62156489:43410/14:00224515 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.gca.2014.03.041" target="_blank" >http://dx.doi.org/10.1016/j.gca.2014.03.041</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.gca.2014.03.041" target="_blank" >10.1016/j.gca.2014.03.041</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Origin of carbonatites in the South Qinling orogen: Implications for crustal recycling and timing of collision between the South and North China Blocks

Popis výsledku v původním jazyce

Most studies of compositional heterogeneities in the mantle, related to recycling of crustal sediments or delaminated subcontinental lithosphere, come from oceanic setting basalts. In this work, we present direct geochronological and geochemical evidencefor the incorporation of recycled crustal materials in collision-related carbonatites of the South Qinling orogenic belt (SQ), which merges with the Lesser Qinling orogen (LQ) to separate the South and North China Blocks. The SQ carbonatites occur mainly as stock associated with syenites. The data presented here show that zircon from the syenites yields an age of 766, 25 Ma, which differs significantly from the age of primary monazite from the carbonatites The syenites contain lower initial 87Sr/86Sr and higher Nd values. This indicates that the carbonatites do not have genetically related with the silicate rocks, and were directly derived from a primary carbonate magma generated in the mantle. The carbonatites show a Sr--Nd isotopic s

Název v anglickém jazyce

Origin of carbonatites in the South Qinling orogen: Implications for crustal recycling and timing of collision between the South and North China Blocks

Popis výsledku anglicky

Most studies of compositional heterogeneities in the mantle, related to recycling of crustal sediments or delaminated subcontinental lithosphere, come from oceanic setting basalts. In this work, we present direct geochronological and geochemical evidencefor the incorporation of recycled crustal materials in collision-related carbonatites of the South Qinling orogenic belt (SQ), which merges with the Lesser Qinling orogen (LQ) to separate the South and North China Blocks. The SQ carbonatites occur mainly as stock associated with syenites. The data presented here show that zircon from the syenites yields an age of 766, 25 Ma, which differs significantly from the age of primary monazite from the carbonatites The syenites contain lower initial 87Sr/86Sr and higher Nd values. This indicates that the carbonatites do not have genetically related with the silicate rocks, and were directly derived from a primary carbonate magma generated in the mantle. The carbonatites show a Sr--Nd isotopic s

Druh

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

CEP obor

DB - Geologie a mineralogie

OECD FORD obor

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Projekt

<a href="/cs/project/QJ1230066" target="_blank" >QJ1230066: Degradace půdy a její vliv na komplex půdních vlastností včetně návrhu nápravných opatření k obnově agroekologických funkcí půdy.</a><br>

Návaznosti

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

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Geochimica et Cosmochimica Acta

ISSN

0016-7037

e-ISSN

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Svazek periodika

143

Číslo periodika v rámci svazku

15 October 2014

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

18

Strana od-do

189-206

Kód UT WoS článku

344072500012

EID výsledku v databázi Scopus

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