"Perception of the maria as solidified tsunamis reverses the usual course of scientific effort. Given an analytic solution in considerable detail, we here seek a convincing scenario that might have brought it about. It is now widely accepted that the Maria were generated within the period 4.0-3.7 Gya objects from the asteroid belt, after a 400 billions of much smaller intra solar system debris that had brecciated the thin (10 km) plagioclase crust of the previously molten moon, which was then orbiting the earth at about half its present radius. Only the largest impacts were sufficiently energetic to perforate the crust and plunge through its substrate, as evidenced today by the ejection of mantle basalts in various amounts, among which least 66 multi-ring structures have been catalogued as maria, or, in present context, frozen tsunamis.
William G. Van Dorn; Lunar Tsunamis Revisited "The impact factor of journal provides quantitative assessment tool for grading, evaluating, sorting and comparing journals of similar kind. It reflects the average number of citations to recent articles published in science and social science journals in a particular year or period, and is frequently used as a proxy for the relative importance of a journal within its field. It is first devised by Eugene Garfield, the founder of the Institute for Scientific Information. The impact factor of a journal is evaluated by dividing the number of current year citations to the source items published in that journal during the previous two years.
Last date updated on July, 2014