In the quartzite target, the subsurface damage is additionally characterized by highly localized deformation along shear bands with intense grain comminution, surrounded by damage zones. Microanalysis shows that the formation of radial, tensile, and intragranular cracks is a common response of both nonporous materials to impact cratering. Additionally, both experiments were modeled and the calculated strain zones underneath the craters were compared to experimental deformation features. Subsurface deformation was mapped and analyzed on the microscale using thin sections of the bisected craters. Projectiles of 2.5 mm diameter were accelerated to ~5 km s −1 and impacted onto blocks of marble or quartzite. Two impact cratering experiments on nonporous rock targets were carried out to determine the influence of target composition on the structural mechanisms of subsurface deformation.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |