Here is the whole photo:

http://www.msss.com/moc_gallery/e01_e06/images/E04/E0402277.html

Longitude of image center: 262.30°W
Latitude of image center: 37.68°N
Scaled pixel width: 4.64 meters

This is on the easter edge of Meridiani Planum where the rover is. The impact may have been at an angle which would make the ejecta more to one side perhaps. Another intriguing aspect of this image is it implies a higher air pressure at the time of this impact, and this time should be able to be estimated from the age of the crater. This is because the air pressure would need to be higher for the water to stay fluid this long over this distance.

Since this is on the edge of Meridiani the water signs are likely linked to what the Rover is finding. It may be that the age of this crater would then give an estimate of the age of the water signs the rover is seeing.