sinuous rille

sinuous rille

(sin -yoo-ŭs) See rille.
References in periodicals archive ?
The image below shows a collapsed skylight into a lava-tube cave beneath a sinuous rille in the volcanic Marius Hills region, an area well known to Moon observers for its domes (volcanic extrusions).
The Lunar 100 L Feature name Significance 11 Aristarchus Very bright crater with dark bands on its walls 17 Schroter's Valley Giant sinuous rille 22 Aristarchus Plateau Mysterious uplifted region mantled with pyroclastics For a complete listing, see Sky & Telescope: April 2004, page 113, or point your Web browser to SkyandTelescope.com/observing/objects/moon.
The most striking feature of this part of the floor is a long sinuous rille that apparently originates from a small elongated crater located near the north wall.
Massive wrinkle ridges pass among these flooded older craters, and a somewhat sinuous rille cuts across ridges and maria north of Jansen, which is itself a lava-flooded crater.
These are hundreds to thousands of kilometers long (compared to the maximum length of a sinuous rille of a few hundred kilometers) and around 1 to 2 km wide.
Down its middle runs a long, thin, sinuous rille. Skilled lunar observers using large telescopes discovered this rille many decades ago, but it became widely known only after it was photographed by the Lunar Orbiters in the 1960s.
The existence of lavas under Plato helps explain several features, including its lava-flooded floor, sinuous rilles with vents near Plato that cross rugged terrain nearby, and the rilles between Maupertuis and Plato.
Snaky sinuous rilles are thought to be old lavariver beds or collapsed lava tubes.
A second class of lunar volcanic features associated with the edges of large basins is the sinuous rilles. These are meandering depressions, commonly hundreds of meters wide, tens of meters deep, and tens of kilometers long, which occur almost entirely within the mare basalts.
High on my list are sinuous rilles, snakelike "riverbeds" that sometimes meander across the maria for hundreds of kilometers.
Sinuous rilles, such as Hadley Rille, mark locations where rapidly flowing lavas cut winding channels.