Rover "Perseverance" on the way
 to interesting tectonic structures in the Jezero crater

Norbert Brügge, Germany
Dipl.-Geol.

Update:
17.09.2021

          
Striking are the rocks flanking the lines on both sides of this structures
This can only mean that there was an upward movement on these linear structures, as a result of which buried rocks have returned to the surface

July 12 (sol-133) :
“Our current plan is to visit "Raised Ridges" and investigate it close up. The helicopter’s images are by far better in resolution than the orbital ones we were using. Studying these will allow us to ensure that visiting these ridges is important to the team.”


R.R. from helicopter flight #9

My comment:
"Raised Ridges" is an unspectacular place on the photo. With a lot of imagination, a hill with a covered depression on it can be recognized. The flanking rocks are of the known ultramafic type. Much more interesting are the linear structures and the small craters to the west and south of it.

July 24 (sol 152) :
The helicopter has successful flown the planned distance of  along "Raised Ridges".

Enlargements of the photos confirm my assumption that these are tectonic structures. No further analysis is possible because the cracks are filled with Aeolian deposits.
 The small craters were either created by meteorites or exaust of gas.

 

August 05 (sol-163):
The helicopter has safely flown 380 m to northwest. Target was the distinctive fault-like structure ("Artuby Ridge") on the edge of the dune landscape of "South Seitah".


August 16 (sol-174):

Flight 12 brought excellent photos from A.R.
 


 


 September  05 (sol 193):

 Flight 13 provided more photos of the southern edge of the dune field "South Seitah" with the A.R fault
.

 

Sol-138  >> 205: Where is "Perseverance" ?
"Perseverance" has meanwhile moved about 150m further south. Looking they a passage to "Raised Ridges" ?
During this time the "paving stones" were examined more closely and a drilling for sampling was carried out on August 6th (sol 164) without success.
Sol-171: The rover continues northwest in the depression hoping to find deposits from a river.

Sol-175: The rover finds a elevation with probably ash deposits.
Sol-177: The rover has reached the first exposed tectonic created part of the linear elevation.
 

     


Sol-180
: The rover stands on the elevation and is supposed to drill one of the flat ultramafic stones.
Sol-185: Abrading of a place on the stone.
Sol-190: Successful extraction of a sample after drilling..
Sol-196: Second successful extraction of a sample after drilling.

  

 

The selected object for drilling

              

Sol-185: Abraded place

Sol-190: First core drilling

Sol-196: Second core drilling (hole and core)
---------------------->

          

Sol-200: The rover has moved northwest along the fault nearly 270 m and has taken photos of the outcroped bedrock.
Sol-201: The rover has left the elevation, has crossed the depression and is on its way towards "South Seitah".