This paper presents results from a study of lava flows that were discharged by Bezymyannyi Volcano at different times, from old (about 3500 years ago) to recent ones (1985–1989). We provide detailed descriptions of the ...
The chemical and mineralogical composition, structure and petrophysical properties of volcanic rocks, composing three Quaternary volcanoes of Spitsbergen island - Sverrefjellet, Halvdanpiggen and Sigurdfjellet - have been ...
Since Early Precambrian volcanic rocks are typically strongly altered by superimposed processes, they retain primary composition and texture only in exceptional cases. Such a case is observed in the Early Paleoproterozoic ...