Geological significance of anisotropy of seismic velocities in Earth's crust

Autor: N. Ye. Galdin, I.A. Rezanov
Rok vydání: 1967
Předmět:
Zdroj: International Geology Review. 9:1424-1429
ISSN: 1938-2839
0020-6814
Popis: Anisotropism of seismic velocities is at its minimum in rocks consisting mainly of feldspar and quartz, is appreciable in pyroxenes and amphiboles (chain-structured silicates), and is at its maximum in mica-rich rocks (sheef-structured silicates). Inasmuch as the difference between the formation and boundary velocities has been established by the DSS for the Earth's crust, as a whole, and is recognizable also in the tops of the mantle, the crust and the tops of the mantle probably consist of seismically anistropic rocks. -- IGR Staff.
Databáze: OpenAIRE