Fluid dynamics offer key details to crater formation and more. This Image directory was assembled to show experiment results which show that fluid dynamics are responsible fot the formation of some crater features here on earth. This idea was rejected by some forum participants who place electrical processes above all others as instrumental in formation of planetary features. The dynamics of these experiments was first offered from observations of the effect of water droplets on fine grained soil. Deliberate attempts to replicate this effect on a thinner bed of material with a hard substrate gave encouraging reslts in 2010 and again in the following years to offer an explanation for Meteor Crater in arizona which was formed where a shallow inland lake once stood.   There have been other experimenters and researchers who have had similar thoughts about fluid dynamics but they have advanced the mechanism's involvement in formation of surface features far beyond that of craters. My experiemnts may provided some evidence to support the thermal ablation model offered at the following link: thermal airburst impact structure. At present we've been independent thinkers on similar paths. i will highlight the images which show how water droplets into fine-grained material can show the dynamics which can be expected from the effects of high temperature material, created as an object falls through Earth's atmosphere at great speeds, bringing thermal sculpting upon a hard planetary surface. In forums i've suggested that the object becomes as a plasticized material rather than a solid object and that mass of material displaces surface to form a crater like meteor crater.. But this mechanism has been taken much further and refined, at the link above by Dennis Cox, who identifies compact mountain ranges as signitures of thermal ablation at the impact location.   Have you ever played with one of those sand scape novelties? In them you will see liquified stratification in action. There is important correlation between sedimentation, missing layers, meteor crater, the lakes drainage and certain details of canyon features. Details of Proposal found at: A thread in this forum