Fluid inclusions in quartz. These inclusions were produced in the laboratory. Quartz single crystals were experimentally deformed in a Griggs type solid medium deformation apparatus at a temperature of 800 degrees Celsius and a confining pressure of about 1200 MPa. The crystals were deformed in the presence of added water. Fractures developed and these fractures healed again leaving traces of left-over fluid inclusions. Note tiny gas bubbles within the inlusions.
You'll find more about fluid inclusions at Ronald Bakker's homepage
See also: The world of fluid inclusions
10 Mai 2000