Genesis of the world's largest rare earth element deposit, Bayan Obo, China: Protracted mineralization evolution over similar to 1 b.y

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F18%3A43914245" target="_blank" >RIV/62156489:43410/18:43914245 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1130/G39801.1" target="_blank" >https://doi.org/10.1130/G39801.1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1130/G39801.1" target="_blank" >10.1130/G39801.1</a>

Result language

angličtina

Original language name

Genesis of the world's largest rare earth element deposit, Bayan Obo, China: Protracted mineralization evolution over similar to 1 b.y

Original language description

The unique, giant, rare earth element (REE) deposit at Bayan Obo, northern China, is the world&apos;s largest REE deposit. It is geologically complex, and its genesis is still debated. Here, we report in situ Th-Pb dating and Nd isotope ratios for monazite and Sr isotope ratios for dolomite and apatite from fresh drill cores. The measured monazite ages (361-913 Ma) and previously reported whole-rock Sm-Nd data show a linear relationship with the initial Nd isotope ratio, suggesting a single-stage evolution from a Sm-Nd source that was formed before 913 Ma. All monazites show consistent epsilon(Nd(1.3Ga)) values (0.3 +/- 0.6) close to those of the adjacent 1.3 Ga carbonatite and mafic dikes. The primary dolomite and apatite show lower Sr-87/Sr-86 ratios (0.7024-0.7030) than the recrystallized dolomite (0.7038-0.7097). The REE ores at Bayan Obo are interpreted to have originally formed as products of ca. 1.3 Ga carbonatitic magmatism and to have undergone subsequent thermal perturbations induced by Sr-rich, but REE-poor, metamorphic fluids derived from nearby sedimentary rocks.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10505 - Geology

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

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

Name of the periodical

Geology

ISSN

0091-7613

e-ISSN

—

Volume of the periodical

46

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

4

Pages from-to

323-326

UT code for WoS article

000428011100011

EID of the result in the Scopus database

2-s2.0-85044272628