A study of nanocrystals in rocks subjected to natural and engineered mechanical and thermal impacts

作者：Kulik V B^*; Sobolev G A; Vettegren V I; Kireenkova S M

来源：Izvestiya-Physics of the Solid Earth, 2011, 47(10): 873-878.

DOI：10.1134/S1069351311100065

The results are reported of Raman spectroscopy for nanocrystals of a variety of mineral species (quartz, anatase, plagioclase, pyrope, omphacite, and albite) in rocks from different depth intervals. It was found that average dimensions of the nanocrystals vary from 5 to 30 nm. The crystallographic cell in the nanocrystals is deformed. The effective stresses responsible for these deformations vary from -0.4 to +1.2 GPa. After having been exposed to high pressure under high temperature, the nanocrystals of quartz and albite shrank in size, while the effective tensile stresses increased.

• 出版日期2011-10