 |
|
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z |
| • HOME • ABOUT • CATEGORIES • USE OF TEXT AND IMAGES • NEWSLETTER   
|
grooved terrain
A region on the surface of a planet or moon marked by a series of almost parallel grooves; the origin may be tectonic or associated with secondary impact craters. Grooved terrain was originally identified on Phobos, but has also been seen on Ganymede and Mars.
Related category
• GEOLOGY AND PLANETARY SCIENCEAlso on this site:
Encyclopedia of Alternative Energy & Sustainable Living
Encyclopedia of History