Pregled bibliografske jedinice broj: 69485
Retrogressive metamorphism in Central Bosnia dated by K/Ar and Ar/Ar methods on Hyalophane
Retrogressive metamorphism in Central Bosnia dated by K/Ar and Ar/Ar methods on Hyalophane // Beriche der Deutschen Mineralogischen Geselschaft, European Journal of Mineralogy, Vol.11 / Beran, A. (ur.).
Beč: Deutschen Mineralogischen Gesellschaft, 1999. (poster, međunarodna recenzija, sažetak, znanstveni)
CROSBI ID: 69485 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Retrogressive metamorphism in Central Bosnia dated by K/Ar and Ar/Ar methods on Hyalophane
Autori
Balogh, Kadosa ; Palinkaš, Ladislav ; Bermanec, Vladimir
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Beriche der Deutschen Mineralogischen Geselschaft, European Journal of Mineralogy, Vol.11
/ Beran, A. - Beč : Deutschen Mineralogischen Gesellschaft, 1999
Skup
77. Jahrestagung der Deutschen Mineralogischen Gesellschaft
Mjesto i datum
Beč, Austrija, 28.08.1999. - 01.09.1999
Vrsta sudjelovanja
Poster
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
Mid-Bosnian Schits Mts; Dinarides; metamorphism; q-porphyries; Alpine veins; quartz; hyalophane; fluid inclusion; K/Ar; Ar/Ar; Bosnia
Sažetak
The Mid-Bosnian Schits Mts. (MBSM) are the central part of the Inner Dinarides. The most widespread rocks of the MBSM are pre-Devonian metamorphics. Low-grade metamorphism affected them at 350-400°C and pressure of 3-5kbar. Permian is a time of intesive extrusions and intrusion of acid magmas building up huge masses of q-porphyries. The main phase of the Tethyan rifting was experienced during Ladinian. It brought about plutonic/hypabissal rocks of diorite, gabro, syenite and albite granite. Volcanics are basalts, spilites, andesites, keratophyres, dacites and pyroclastics. The opening of Tethyan Ocean took place during Upper Triassic and most of Jurassic and uplift of Dinarides during the Pyrenean phase. It was the time of commencement of retrogressive metamorphism and formation of Quartz-hyalophane Alpine veins in the already brittle metamorphic rocks. Fluid inclusion study on hyalophane determined (L(H20)+L(CO2)+V) type,with presence of N2 and CH4. Their P-T-t characteristics confirm origin from retrogressive metamorphic fluids developed during the Dinarides uplift. K/Ar age on hyalophane varies between 16.7+0.7 and 25.3+1.0 Ma, obviously affected by loss of Ar (suspected perthitization). Ar/Ar spectrum: a plateau age of 31.2+0.3 Ma has been obtained in the 731° to 1410°C temperature range, where 98.2% of Ar was released.
Izvorni jezik
Engleski
Znanstvena područja
Geologija
