Informácia o dokumente



In: Geologica Carpathica, vol. 42, no. 5
V. A. Kononova - K. Dziedzic - V. Konecny - S. Peltz - E. D. Andreyeva

REGIONAL VARIATIONS IN COMPOSITION OF THE NEOGENE-QUATERNARY ALKALINE BASALTS IN CENTRAL EUROPE

Detaily:

Rok, strany: 1991, 251 - 258

O článku:

Neogene-Quaternary alkaline basalts in Central Europe are joined with two types of geotectonic structures: a) rift zones in Hercynian platform, b) hinterland of the Alpine folded system. a) Rift volcanism (Hessian Depression — F.R.G., Lower Silesia — Poland) represents a great variety of alkaline ultrabasic, alkaline basic rocks and their differentiates with higher content of Ti02 (2.5%), lower content of Si02 and relatively higher value s of F/K, P/Zr, L/La, Ca/Na, Ti/Sc. The ratio Ti/V = 63–74 is characteristic of continental basalts.
b) Volcanism in hinterland of Alpine folded system (Slovakia, Romania, Yugoslavia) is characterized by rather limited petrographic composition with dominancy of basanites and subalkaline olivine basalts, lower content of Ti02 (2%), higher content of Si02. The ratio Ti/V 50 is close to the oceanic islands. Basalts of Persani Mts. (Romania) with low content of Ti02 (1.6%), higher content of Si02 (48%) and lower content of incompatible elements show specific character. Comparative analysis reveals different conditions of magma-forming processes controlled by partial melting, crystallization differentiation with eventual contamination of crustal material.

Ako citovať:

ISO 690:
A. Kononova, V., Dziedzic, K., Konecny, V., Peltz, S., D. Andreyeva, E. 1991. REGIONAL VARIATIONS IN COMPOSITION OF THE NEOGENE-QUATERNARY ALKALINE BASALTS IN CENTRAL EUROPE. In Geologica Carpathica, vol. 42, no.5, pp. 251-258.

APA:
A. Kononova, V., Dziedzic, K., Konecny, V., Peltz, S., D. Andreyeva, E. (1991). REGIONAL VARIATIONS IN COMPOSITION OF THE NEOGENE-QUATERNARY ALKALINE BASALTS IN CENTRAL EUROPE. Geologica Carpathica, 42(5), 251-258.