Rimae Hippalus
Concentric rilles are the largest and most impressive of the moon. The best example is Rimae Hippalus an arc around the eastern side of Mare Humorum. The Northeast and above Hippalus a strange thing happens, there are some Rimae in concave arc to the east. The most notable is called Rima Agatharchides, but is actually a part of Rimae Hippalus and family?
Rimae Hippalus are curved rilles, failures caused by tension in the crust. Some winding canals are credited to have formed by the rapid movement of the lava flow, but also often originate from the collapse of volcanic vents. I firmly believe that if Hippalus, the tension in the crust due to the impact of a colossal body that formed the Mare Humorum, is verdadeito responsible for this set of rilles.
Do you remember the Rilles segments across the mountains of the Apennines?
They are seen here (
http://www.astrobin.com/full/224164/0/?real=&mod=) and actually may have been extremely similar to Riiles of Hippalus before the flood lavas which erased many brands . It is known that the Imbrium was also formed by an enormous impact.
In fact, this points to a difference in relation to these circumferential rilles, Hippalus the east side of the Humorum Basin and Rimae Fresnel and Rima Bradley east of Imbrium. The circumferential rilles the Imbrium Basin, cut debris that fell from the raised edge of the basin, but the lava seas covered the rilles, so that any volcanism must have occurred after the sinking of the basin. Humorum in the main basin subsidence, must have occurred after the lavas coming sedimented and hardened. While here on the east side of Humorum, the fracturing created 3 or 4 rilles spread over a horizontal distance of about 50 km, Imbrium in the distance is 10-20 km, and only 1 or 2 rilles are seen.
Partial text: Charle Wooden / LPOD - Avani Soares
Adaptation: Avani Soares
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