| | Shock Therapy: How Earth Responds to Impacts From Outer Space |
 | | Sixty-five million years later, the dislocated layers of Earth, which are riddled with electronic defects, evidence of shock, amorphization, and a myriad of other features characteristic of shock metamorphism, are providing scientists with critical clues for unraveling the mysteries of the now famous Chicxulub impact structure. |
 | | Nuclear magnetic resonance (NMR) spectroscopy is being developed to study irregular features in crystalline and diaplectic materials in quartz-bearing rocks as a result of shock from an impact, and for recognizing silica polymorphs and hydration associated with silica phases in naturally shocked Coconino Sandstone from Meteor Crater, Arizona. |
 | | Si nuclear magnetic resonance spectra indicate the extent of shock damage experienced by the quartz grains of the sandstone. |
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