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Splash-form tektites are glassy rocks ranging in size from roughly 1 to 100 mm that are believed to have formed from the splash of silicate liquid after a large terrestrial impact from which they are strewn over thousands of km. They are found in an array of shapes including spheres, oblate ellipsoids, dumb-bells, rods, and possibly fragments of tori. It has recently become appreciated that surface tension and centrifugal forces associated with the rotation of fluid droplets are the maindoi:10.1017/s0022112010005641 fatcat:5ihk77n2z5cnzohkif3vqn7rl4