the craters on the moon came from lava.
the craters on the moon came from lava.
where did the craters on the moon come from?
lava
mercurian craters have the morphological elements of lunar craters—the smaller craters are bowl-shaped, and with increasing size, they develop scalloped rims, central peaks, and terraces on the inner walls. the ejecta sheets have a hilly, lineated texture and swarms of secondary impact craters. fresh craters of all sizes have dark or bright halos and well-developed ray systems. although mercurian and lunar craters are superficially similar, they show subtle differences, especially in deposit extent. the continuous ejecta and fields of secondary craters on mercury are far less extensive (by a factor of about 0.65) for a given rim diameter than those of comparable lunar craters. this difference results from the 2.5 times higher gravitational field on mercury compared with the moon. as on the moon, impact craters on mercury are progressively degraded by subsequent impacts. the freshest craters have ray systems and a crisp morphology. with further degradation, the craters lose their crisp morphology and rays and features on the continuous ejecta become more blurred until only the raised rim near the crater remains recognizable. because craters become progressively degraded with time, the degree of degradation gives a rough indication of the crater's relative age. on the assumption that craters of similar size and morphology are roughly the same age, it is possible to place constraints on the ages of other underlying or overlying units and thus to globally map the relative age of craters.
geology of solar terrestrial planets
maine huts & trails' founder is larry warren of carrabassett valley, who first envisioned the trail network in 1974 and borrowed the huts concept from the appalachian mountain club. in terms of architecture, the hut designs reflect traditional maine sporting camps.









































promoting year-round tourism in the region is one of warren's stated goals. he was formerly involved in developing sugarloaf into the state's second busiest ski resort, and he envisions maine huts & trails fitting into the official ecotourism campaign.









































the maine huts & trails main office is located at 496 main street in kingfield, me.









































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maine huts and trails