Smooth plains - Smooth plains Figure 10 The Samarkand...

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Smooth plains Figure 10: The Samarkand Sulci (vertical, right of center), with the northwest portion of Sarandib Planitia to their right; Daryabar Fossa extends up and right from the image bottom Two units of smooth plains were also observed by Voyager 2 . These plains generally have low relief and have far fewer craters than in the cratered terrains and plains, indicating a relatively young surface age. [38] In one of the smooth plain regions, Sarandib Planitia , no impact craters were visible down to the limit of resolution. Another region of smooth plains to the southwest of Sarandib, is criss-crossed by several troughs and scarps. Cassini has since viewed these smooth plains regions, like Sarandib Planitia and Diyar Planitia at much higher resolution. Cassini images show smooth plain regions to be filled with low-relief ridges and fractures. These features are currently interpreted as being caused by shear deformation . [39] The high resolution images of Sarandib Planitia have revealed a number of small impact craters, which allow for an estimate of the surface age, either 170 million years or 3.7 billion years, depending on assumed impactor population. [4] [41] The expanded surface coverage provided by Cassini has allowed for the identification of additional regions of smooth plains, particularly on Enceladus's leading hemisphere (the side of Enceladus that faces the direction of motion as the moon orbits Saturn). Rather than being
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This note was uploaded on 12/15/2011 for the course AST AST1002 taught by Professor Emilyhoward during the Fall '10 term at Broward College.

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Smooth plains - Smooth plains Figure 10 The Samarkand...

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