نتایج جستجو برای: crystalline rock
تعداد نتایج: 78247 فیلتر نتایج به سال:
We present hydro-mechanical measurements that characterize shear on natural fractures in schist, amphibolite, and rhyolite specimens from the enhanced geothermal system (EGS) Collab Project's Experiment 1 2 sites (E1 E2) at Sanford Underground Research Facility. employed a triaxial direct method augmented with X-ray imaging to perform hydroshearing (injection-induced shearing) mechanical sheari...
Grain size effect on rock strength is a topic of great interest in geotechnical engineering. A consensus obtained from earlier laboratory tests that generally decreases with the increase grain for both silicate and carbonate rocks; however, some recent numerical results conflict such test results. To address this intriguing issue, polymineralic crystalline low porosity investigated numerically ...
Introduction: We describe a project that could greatly alter our understanding of the environment on Earth at the time in which life originated. The approach is to systematically search for terrestrial rock and mineral samples that should be present on the lunar surface due to impacts, and in selected terrestrial localities. Project activities include studies of terrestrial materials, developme...
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