GRANITIC PEBBLES OF THE CRETACEOUS FLYSCH OF THE PIENINY KLIPPEN BELT, WESTERN CARPATHIANS: U/Pb ZIRCON AGES

Year, pages: 1994, 375 - 378

Five zircon concentrates from three occurrences of ''exotic'' granitic pebbles (Upohlav type) in the Pieniny Klippen Belt Cretaceous flysch sequences (the Klape and Pieniny Units) underwent U/Pb isotopic age determination. The U/Pb discordia data have the upper intercept with concordia at 274 ± 13 Ma, the 207/206 vs. 204/206 lead data gave 294 ± 21Ma. These results are interpreted as the age of primary magmatic crystallization of the Lower Permian Variscan post-orogenic and A-type trending granitic suite. In addition, the present results contradict older opinions (Birkenmajer 1988; Misik & Marschalko 1988) about the Jurassic-Cretaceous ages of ''exotic'' acid magmatites based on K/Ar dating, which are newly interpreted as the uplift ages.

Uher, P., Pushkarev, Y. 1994. GRANITIC PEBBLES OF THE CRETACEOUS FLYSCH OF THE PIENINY KLIPPEN BELT, WESTERN CARPATHIANS: U/Pb ZIRCON AGES. In Geologica Carpathica, vol. 45, no.6, pp. 375-378. 1335-0552.

Uher, P., Pushkarev, Y. (1994). GRANITIC PEBBLES OF THE CRETACEOUS FLYSCH OF THE PIENINY KLIPPEN BELT, WESTERN CARPATHIANS: U/Pb ZIRCON AGES. Geologica Carpathica, 45(6), 375-378. 1335-0552.