Metallogenesis of vein-type U-deposits in the Bohemian Massif, constrained by U–Pb uraninite-apatite dating and AFT thermochronology

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F25%3A10169531" target="_blank" >RIV/00025798:_____/25:10169531 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/25:00142012

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Metallogenesis of vein-type U-deposits in the Bohemian Massif, constrained by U–Pb uraninite-apatite dating and AFT thermochronology

Original language description

Although the Bohemian Massif hosts significant vein-type U-deposits associated with shear zones, their metallogenetic model in the frame of the Central European Variscides is poorly constrained due to the lack of geochronological data. This contribution presents the first SIMS U-Pb age of 270.8 +- 7.5 Ma obtained so far for the U-mineralization from the Bohemian Massif. This age coincides with the main U mineralizing events in the entire Variscan Orogenic Belt, including large metallogenic provinces in the Massif Central, Armorican Massif, Black Forest, and Erzgebirge. The recognition of the Permian mineralizing event indicates that the metallogenesis of U-deposits in the Bohemian Massif was linked to the lithospheric extensional events responsible for the coeval exhumation of the metamorphic complexes and the formation of the Late Carboniferous to Lower Permian sedimentary basins that generated oxidizing basinal fluids percolating through and liberating U from the crystalline basement. The AFT thermochronology along with U-Pb apatite dating reflects the rapid Permian exhumation of the crystalline basement, which allowed the influx of oxidized basinal brines mixed with meteoritic waters, which are the most important ore-forming fluids in the entire European Variscan Belt.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10505 - Geology

Project

<a href="/en/project/EF16_026%2F0008459" target="_blank" >EF16_026/0008459: Long-term research of geochemical barriers for nuclear waste disposal</a><br>

Continuities

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2025

Confidentiality

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

Article name in the collection

18th Biennial SGA Meeting - Proceedings Volume 1

ISBN

979-8-90030-538-7

ISSN

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e-ISSN

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Number of pages

4

Pages from-to

146-149

Publisher name

The Society for Geology Applied to Mineral Deposits (SGA)

Place of publication

Colorado, USA

Event location

Golden - Colorado

Event date

Aug 3, 2025

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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