TECTONIC and its evolution are theoretical basis of geology and summation in geosciences from investigation of the earth’s structure, composition, motion and history. Therefore, they are of great importance to the in...
Chrysoberyl AI:BeO4 is isomorphous with olivine (MgFe)2SIO4, and belongs to orthorhombic system with space group P?m?-D2h16. Vibrational properties of olivine and Mg2SiO4 have been extensively investigated for the s...
I. INTRODUCTION The theory of plate tectonics has got an important situation in recent geophysics, but the problems how a continental plate collides with another and what the boundary of their collision zone is are st...
On account of the close relations between the ionospheric state and radio communication, ionospheric physics has become a branch of modern geophysics, which progresses very quickly. However, it must be noted that work...