Formation of authigenic monazite-(Ce) to monazite-(Nd) from Upper Carboniferous graywackes of the Drahany Upland: Roles of the chemical composition of host rock and burial temperature
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F11%3A00056033" target="_blank" >RIV/00216224:14310/11:00056033 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/00025798:_____/11:00000626
Výsledek na webu
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DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Formation of authigenic monazite-(Ce) to monazite-(Nd) from Upper Carboniferous graywackes of the Drahany Upland: Roles of the chemical composition of host rock and burial temperature
Popis výsledku v původním jazyce
Irregular aggregates of monazite-(Ce) to monazite-(Nd)have been found in graywackes from the Protivanov Formation, Drahany Upland, Czech Republic. Textural evidences suggest that they are of authigenic origin and grew during very low-grade metamorphism at a maximum temperature ~200?300C in relation to a deep burial. Authigenic monazite appears to form only in Ca-poor rocks. In Ca-rich graywackes, which underwent the same low-temperature metamorphic overprint, authigenic synchysite-(Ce) or parisite-(Ce)are common instead. Authigenic monazite shows low concentrations of Th, U, Ca, Y+HREE, and a low Eu anomaly. Zoning pattern suggests an evolution in fluid chemistry during diagenesis/very low-grade metamorphism or it relates to different solubility of the individual REE-phosphates. The major source of REEs are detrital minerals mainly monazite. Other minor sources of REEs probably include Fe-oxide/hydroxide and/or clay minerals, which could have contributed to the Nd+MREE-rich cores.
Název v anglickém jazyce
Formation of authigenic monazite-(Ce) to monazite-(Nd) from Upper Carboniferous graywackes of the Drahany Upland: Roles of the chemical composition of host rock and burial temperature
Popis výsledku anglicky
Irregular aggregates of monazite-(Ce) to monazite-(Nd)have been found in graywackes from the Protivanov Formation, Drahany Upland, Czech Republic. Textural evidences suggest that they are of authigenic origin and grew during very low-grade metamorphism at a maximum temperature ~200?300C in relation to a deep burial. Authigenic monazite appears to form only in Ca-poor rocks. In Ca-rich graywackes, which underwent the same low-temperature metamorphic overprint, authigenic synchysite-(Ce) or parisite-(Ce)are common instead. Authigenic monazite shows low concentrations of Th, U, Ca, Y+HREE, and a low Eu anomaly. Zoning pattern suggests an evolution in fluid chemistry during diagenesis/very low-grade metamorphism or it relates to different solubility of the individual REE-phosphates. The major source of REEs are detrital minerals mainly monazite. Other minor sources of REEs probably include Fe-oxide/hydroxide and/or clay minerals, which could have contributed to the Nd+MREE-rich cores.
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
DB - Geologie a mineralogie
OECD FORD obor
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Návaznosti výsledku
Projekt
<a href="/cs/project/GP205%2F08%2FP474" target="_blank" >GP205/08/P474: Stabilita a mechanismy alterace monazitu v závislosti na teplotě 150-300°C a chemickém složení hydrotermálních fluid</a><br>
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
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Svazek periodika
127
Číslo periodika v rámci svazku
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Stát vydavatele periodika
NL - Nizozemsko
Počet stran výsledku
13
Strana od-do
373-385
Kód UT WoS článku
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EID výsledku v databázi Scopus
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