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

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
Origin of carbonatites in the South Qinling orogen: Implications for crustal recycling and timing of collision between the South and North China Blocks
Original language description
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
Czech name
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Czech description
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Type
J<sub>x</sub> - 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/QJ1230066" target="_blank" >QJ1230066: Effect of soil degradation on complex soil properties including conservation measures for restoration soil agroecological function</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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