found: Work cat.: Jackson, N.W. A compositional study of the lunar global megaregolith using Clementine orbiter data, 2005:p. 1 (The lunar "megaregolith" is a major portion of the upper lunar crust; The megaregolith lies sandwiched between the surface regolith and bedrock; lunar megaregolith)
found: Wikipedia, Apr. 28, 2007:Moon (Blanketed atop the Moon's crust is a highly comminuted (broken into ever smaller particles) and "impact gardened" surface layer called regolith. ... Beneath the finely comminuted regolith layer is what is generally referred to as the "megaregolith." This layer is much thicker (on the order of tens of kilometres) and comprises highly fractured bedrock.) Regolith/On the Moon (The regolith is generally about 4-5 meters thick in mare areas and 10-15 m in older highland regions. Below this true regolith is a region of blocky and fractured bedrock created by larger impacts which is often referred to as the "megaregolith".)
found: Earth, Moon, and planets, Nov. 1979, via WWW, Apr. 28, 2007:p. 319 (lunar megaregolith)
found: Geologic processes on the Moon, via American Lunar Society Web site, Apr. 28, 2007(Upon impact, basins spread a thick ejecta blanket over a huge section of the moon. These blankets accumulated into a layer several kilometers thick, called the megaregolith. On top of it is a layer of fine, dusty material called the regolith. This was produced by smaller meteorites/micrometeorites pulverizing the upper layers of the megaregolith.)
found: Google search, Apr. 28, 2007(megaregolith; lunar megaregolith; Martian megaregolith; megaregolith of the Moon; megaregolith, the fragmental layer formed of ejecta from craters and basins)