2025
Orogenic arc-related Ni-Cu-(PGE) mineralization of the Ransko massif, Czech Republic, and implications for the metallogeny of the European Variscan belt
ACKERMAN, Lukáš; Vojtěch WERTICH; Jan PAŠAVA; Martin KUBEŠ; Petr RAMBOUSEK et. al.Základní údaje
Originální název
Orogenic arc-related Ni-Cu-(PGE) mineralization of the Ransko massif, Czech Republic, and implications for the metallogeny of the European Variscan belt
Autoři
ACKERMAN, Lukáš; Vojtěch WERTICH; Jan PAŠAVA; Martin KUBEŠ; Petr RAMBOUSEK; Jitka MÍKOVÁ; Jiří SLÁMA; Václav SANTOLÍK; Andreas PACK; Robert A. CREASER; Karel MALÝ a Tomáš MAGNA
Vydání
Mineralium Deposita, Springer, 2025, 0026-4598
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10505 Geology
Stát vydavatele
Německo
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 4.900 v roce 2024
Organizační jednotka
Přírodovědecká fakulta
UT WoS
001434844200001
EID Scopus
2-s2.0-85219029078
Klíčová slova anglicky
Orogenic; Gabbro; Zn-Cu; Ni-Cu-PGE; Metallogeny; Variscan
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 13. 11. 2025 14:57, Mgr. Marie Novosadová Šípková, DiS.
Anotace
V originále
The Ransko (ultra)mafic massif, Bohemian Massif, Czech Republic, hosts several Ni-Cu-(PGE) deposits and peculiar Zn-Cu-Ba ores. Geochronology integrated with petrography, bulk-rock, and mineral compositions together with Sr-Nd-Pb-Hf-Os-O isotopic systematics of barren and variably mineralized (ultra)mafic lithologies as well as massive ores reveal a complex evolution of the Ransko massif and its mineralizations. The Sm-Nd and U-Pb ages obtained for gabbros and cross-cutting granite porphyry, respectively, overlap with Re-Os ages of Ni-Cu-(PGE) and Zn-Cu ores and limit the formation age of (ultra)mafic rocks and metal accumulations to similar to 370-345 Ma. Compositional variations indicate derivation of parental melts of the Ransko massif from metasomatized, Variscan sub-arc mantle and underscore the importance of assimilation-fractional crystallization and crystal accumulation processes. The Ni-Cu ores were emplaced through the gravity-driven percolation of dense sulfide liquids along previously weakened structures associated with the downward crystal fractionation. The orogenic and arc-related nature of the Ransko Ni-Cu-(PGE) mineralization shares some remarkable similarities with some other Ni-Cu deposits in the European Variscan Belt highlighting the significance of these deposits emplaced in arc-related crustal domains. Yet, the variable nature of these mineralizations indicates complex processes that happen during the emplacement and evolution of the parental magmas driving their favourable metal contents.
Návaznosti
| EF16_026/0008459, projekt VaV |
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