Unique complex of activity between 2006 and 2007

The main characteristics of the Sun’s complex of activity (CA), observed between 2006 and 2007, have been considered. The main CA sunspot existed during almost five solar rotations and did not shift in the Carrington coordinate system. The model, according to which CA developed on the basis of a stable large-scale convection cell that reached the convective zone bottom, has been proposed.     

Large solar flares and coronal mass ejections: Their manifestations in the chromosphere

A phenomenological model of a united (solar flare-coronal mass ejection (CME)) event is briefly described. The model is based on the analysis of the images of the development of some events in various spectral ranges. A modified classification of the chomospheric manifestations of the event is proposed. A phenomenological model describing phenomena in the process of the development of intense solar flare-CME events in the activity complexes on the Sun is briefly presented. The model is based on the analysis of the observation data for some major flares (May 16, 1981, October 19, 2001, July 23, 2002).     

New Data on the Composition of Ophiolite Complexes on Karaginskii Island (Eastern Kamchatka)

The geochemistry and composition of peridotite rock-forming minerals from blocks in the serpentinite mélange of Karaginskii Island have been studied. The composition features of the rock-forming minerals are indicative of the fact that they represent abyssal peridotites of the mid-oceanic ridges that did not undergo remelting under suprasubduction conditions. According to the geochemical data, these rocks were subject to metasomatic alterations under mantle conditions in the suprasubduction setting, which were caused by metasomatizing melts and/or fluids generated in the subduction zone.