2008
The Brno Batholith: an insight into the magmatic and metamorphic evolution of the Cadomian Brunovistulian Unit,eastern margin of the Bohemian Massif
LEICHMANN, Jaromír a Volker HOECKZákladní údaje
Originální název
The Brno Batholith: an insight into the magmatic and metamorphic evolution of the Cadomian Brunovistulian Unit,eastern margin of the Bohemian Massif
Název česky
Brněnský batolit, pohled na magmatický a metamorfní vývoj kadomského brunovistulika na východním okraji českého masivu
Autoři
LEICHMANN, Jaromír (203 Česká republika, garant) a Volker HOECK (40 Rakousko)
Vydání
Journal of Geosciences, Praha, Czech geol.Soc, 2008, 1802-6222
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10500 1.5. Earth and related environmental sciences
Stát vydavatele
Česká republika
Utajení
není předmětem státního či obchodního tajemství
Kód RIV
RIV/00216224:14310/08:00028036
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000207802500005
Klíčová slova česky
Brněnský batolit; Brunovistulicum; granity; ofiolity; Gondwana; Petrologie
Klíčová slova anglicky
Brno Batholith; Brunovistulicum; granites; ophiolites; Gondwana; petrology
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 24. 6. 2009 12:22, prof. RNDr. Jaromír Leichmann, Dr. rer. nat.
V originále
The Brno Batholith, a part of the larger Brunovistulian Unit, consists of three genetically independent complexes, Western Granitoid Complex (part of the Thaya Terrane), Ophiolite Belt (formerly Metabasite Zone or Central Basic Belt), and Eastern Granitoid Complex (part of the Slavkov Terrane). The field with geochronological evidence indicate younger age of both granitoid complexes compared with the ophiolite. The composition of the Eastern Granitoid Complex (not newly studied in this paper) points to a relatively primitive Cadomian volcanic-arc environment. The Ophiolite Belt comprises a tilted segment of an almost complete metamorphosed ophiolite sequence with lithologically and geochemically obvious suprasubduction signature. Three main granite suites, with distinct S, I, and A type affinities, are exposed in the Western Granitoid Complex. Abundance of crustal xenoliths, complex morphological zircon population, overall S type chemistry, as well as geophysical and petrological evidence for basalt underplating, all point to the origin of the Tetčice suite via melting of the older metasedimentary crust. The Rena suite consists of I type volcanic-arc granodiorites to granites, whereas small intrusions of granites with certain A type affinity are characteristic of the Hlína suite. Equivalents of all three suits were recognized in the northern part of the Dyje Batholith, which represents the direct continuation of the western branch of the Brno Batholith. The geological structure and geochronological data from both the Brno and Dyje batholiths exhibit some similarities with those documented in the Eastern Desert in Egypt. This may indicate a probable Gondwana affinity to the whole Brunovistulian assembly.
Česky
The Brno Batholith, a part of the larger Brunovistulian Unit, consists of three genetically independent complexes, Western Granitoid Complex (part of the Thaya Terrane), Ophiolite Belt (formerly Metabasite Zone or Central Basic Belt), and Eastern Granitoid Complex (part of the Slavkov Terrane). The field with geochronological evidence indicate younger age of both granitoid complexes compared with the ophiolite. The composition of the Eastern Granitoid Complex (not newly studied in this paper) points to a relatively primitive Cadomian volcanic-arc environment. The Ophiolite Belt comprises a tilted segment of an almost complete metamorphosed ophiolite sequence with lithologically and geochemically obvious suprasubduction signature. Three main granite suites, with distinct S, I, and A type affinities, are exposed in the Western Granitoid Complex. Abundance of crustal xenoliths, complex morphological zircon population, overall S type chemistry, as well as geophysical and petrological evidence for basalt underplating, all point to the origin of the Tetčice suite via melting of the older metasedimentary crust. The Rena suite consists of I type volcanic-arc granodiorites to granites, whereas small intrusions of granites with certain A type affinity are characteristic of the Hlína suite. Equivalents of all three suits were recognized in the northern part of the Dyje Batholith, which represents the direct continuation of the western branch of the Brno Batholith. The geological structure and geochronological data from both the Brno and Dyje batholiths exhibit some similarities with those documented in the Eastern Desert in Egypt. This may indicate a probable Gondwana affinity to the whole Brunovistulian assembly.
Návaznosti
| MSM0021622412, záměr |
|