Hallmarks of these events include the formation of planar deformation features and (*) "strewn fields" of tektites, which sometimes include shocked quartz.
The intensity of these events is measured by a scale that assumes their frequency is proportional to the negative four-fifths of their energy threshold; that is the Palermo scale, which is more complicated than the Torino scale. These events can cause fragments to form suevites, and sites where these events have occurred are characterized by negative Bouguer anomaly and lenses of breccia. Hallmarks of these events include the formation of planar deformation features and (*) "strewn fields" of tektites, which sometimes include shocked quartz. An event of this type involving the body Theia was believed to have created the moon, while another caused the K-T extinction and created the Chicxulub crater. For 10 points, name these events in which rocks from space collide with other, somewhat larger rocks in space.
The intensity of these events is measured by a scale that assumes their frequency is proportional to the negative four-fifths of their energy threshold; that is the Palermo scale, which is more complicated than the Torino scale.
impact event