Lobate Scarps in Thakur Crater

We've seen Thakur before - both in full color and as part of a larger view of this region of Mercury. This time, in an oblique view of its southern portion, we can see how two prominent lobate scarps deform the crater. These scarps form when one block of crust thrusts up and over another, and are thought to have formed due to a reduction in Mercury's surface area as its interior cooled and contracted. The face of a scarp indicates the direction these blocks have moved so, as we see it here, Tharkur has been squeezed from the top-right and from the bottom-left.

This image was acquired as a high-resolution targeted observation. Targeted observations are images of a small area on Mercury's surface at resolutions much higher than the 200-meter/pixel morphology base map. It is not possible to cover all of Mercury's surface at this high resolution, but typically several areas of high scientific interest are imaged in this mode each week.

Date acquired: July 21, 2014
Image Mission Elapsed Time (MET): 48249572
Image ID: 6723137
Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: 3.8° S
Center Longitude: 295.8° E
Resolution: 75 meters/pixel
Scale: The left-to-right field of view in this image is approximately 80 km (50 miles) across
Incidence Angle: 65.2°
Emission Angle: 56.9°
Phase Angle: 28.2°
Orientation: North is to the lower right of the image.

Image credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington