The origin of enriched mantle beneath North China block: Evidence from young carbonatites
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F11%3A00178441" target="_blank" >RIV/62156489:43410/11:00178441 - isvavai.cz</a>
Výsledek na webu
—
DOI - Digital Object Identifier
—
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
The origin of enriched mantle beneath North China block: Evidence from young carbonatites
Popis výsledku v původním jazyce
A swarm of Late Triassic (220 Ma) carbonatite dykes is emplaced into the deformed southern margin of the North China block (NCB) at Lesser Qinling, discontinuously extending for about 10 km. The carbonatites are volumetrically minor, and their formationis related to collision between the South China block (SCB) and Qinling orogen, which led to the amalgamation of the NCB and SCB. The carbonatites are intruded into different Archean and Mesoproterozoic wall-rocks, but are characterized by remarkably similar isotopic compositions [(87Sr/86Sr)i = 0.7048--0.7057; Nd = 4.3 to 10.1; 207Pb/206Pb = 0.878--0.889 and 208Pb/206Pb = 2.136--2.160], which approach, and trend toward slightly less radiogenic Sr and Nd values than, the enriched mantle component EM1. Proterozoic oceanic crust recycled through deep mantle is interpreted to be the principal source of carbon for the Lesser Qinling carbonatites. In comparison with most other young carbonatites (< 200 Ma) emplaced in a rift setting, the Les
Název v anglickém jazyce
The origin of enriched mantle beneath North China block: Evidence from young carbonatites
Popis výsledku anglicky
A swarm of Late Triassic (220 Ma) carbonatite dykes is emplaced into the deformed southern margin of the North China block (NCB) at Lesser Qinling, discontinuously extending for about 10 km. The carbonatites are volumetrically minor, and their formationis related to collision between the South China block (SCB) and Qinling orogen, which led to the amalgamation of the NCB and SCB. The carbonatites are intruded into different Archean and Mesoproterozoic wall-rocks, but are characterized by remarkably similar isotopic compositions [(87Sr/86Sr)i = 0.7048--0.7057; Nd = 4.3 to 10.1; 207Pb/206Pb = 0.878--0.889 and 208Pb/206Pb = 2.136--2.160], which approach, and trend toward slightly less radiogenic Sr and Nd values than, the enriched mantle component EM1. Proterozoic oceanic crust recycled through deep mantle is interpreted to be the principal source of carbon for the Lesser Qinling carbonatites. In comparison with most other young carbonatites (< 200 Ma) emplaced in a rift setting, the Les
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
DB - Geologie a mineralogie
OECD FORD obor
—
Návaznosti výsledku
Projekt
—
Návaznosti
Z - Vyzkumny zamer (s odkazem do CEZ)
Ostatní
Rok uplatnění
2011
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Lithos
ISSN
0024-4937
e-ISSN
—
Svazek periodika
127
Číslo periodika v rámci svazku
1
Stát vydavatele periodika
NL - Nizozemsko
Počet stran výsledku
9
Strana od-do
1-9
Kód UT WoS článku
—
EID výsledku v databázi Scopus
—