Characteristics of Xenoliths in the East Slovakian Neogene Volcanites
Journal Title: Analele stiintifice ale Universitatii "Alexandru Ioan Cuza" din Iasi - seria Geologie - Year 2011, Vol 57, Issue 1
Abstract
The East Slovakian Neogene volcanic bodies contain mostly crustal xenoliths of various types. The chemical and mineral composition of the xenoliths, along with that of some enclaves, was studied through the use of CHA, XRD and EMPA. Xenoliths are rare in acid volcanic rocks, but abundant in intermediary andesites or basaltic andesites. The rhyodacites from the Zemplinicum tectonic Isle rarely contain magmatic enclaves with the features of argillitization, silicification and K-metasomatism. Extrusive andesite bodies in the Slanské vrchy Mts. are typical for xenoliths of sedimentary and metamorphic origin, but some magmatic enclaves were found as well. The pre-Tertiary Ca - skarnic xenoliths with boron-silicates (danburite, datolite) and cordierite hornfelses are also interesting.
Authors and Affiliations
Zdenka Marcinčáková, Marián Košuth
Mineralogical and Thermal Analyses of a Bangle Shard from Harrappa, an Indus Valley Settlement in Pakistan
The present research paper presents the results of a recent study during which mineralogical and thermal analyses were carried out on a terracotta bangle shard from Harrappa, an Indus valley settlement in Pakistan. Bento...
Pressure anomalies on the Totea-Vladimir structure (Getic Depression)
The Totea-Vladimir structure belongs to the Getic Depression, which was formed at the beginning of the Lower Miocene in the South Carpathians foredeep. In terms of hydrocarbon accumulations, the Sarmatian and Burdigalian...
The composition and source of the raw material of two stone axes of Late Bronze Age from Neamț County (Romania) - A Raman study
Two stone axes of Late Bronze Age from Moldova region (Romania) have been studied by Raman spectroscopy. The first axe (A1) belongs to the archaeological site Vînători (Neamț county). From a petrographic viewpoint, the s...
The palynology and palynofacies of the Miocene deposits from the Subcarpathian Nappe (Ciritei Quarry, Eastern Carpathians)
The present study focuses on the palynological assemblage and palynofacies of the Upper Burdigalian – Lower Badenian deposits from the Subcarpathian Nappe. The assemblage of aquatic microfossils indicates an inner neriti...
The geochemical distribution of the heavy metals in the forestlands of the moor Şaru Dornei
Industrial activities such as burning coal and gasoline are the main factors which contribute to the more increasing emissions of heavy metals in the atmosphere. Once they have reached the atmosphere, these are easily di...