The greenish spots at the southern bank of Neretva are also astrobiology-interesting. #LeopardSpots #ReddestRock #MalgosaCrest #JezeroDeltaScience
Broz et al: "Green reduction spots in red sedimentary rocks of the Bright Angel formation..."
https://agu.confex.com/agu/agu25/meetingapp.cgi/Paper/1990965
This one looks at the opposite shore of Neretva, where things are complicated by unsure stratigraphy (see post nr 1 in this thread). Also there's a lacking detection of organics. Abiotic processes are deemed "possible"
Broz et al :"Green Reduction Spots in Red Beds of the Bright Angel Formation and Implications for Biosignature Preservation Potential"
https://www.hou.usra.edu/meetings/lpsc2025/pdf/1706.pdf
🧵 8/n #JezeroDeltaScience #LeopardSpots #ReddestRock #MalgosaCrest
Remember the "reddest rock"?
Here is an animation of WATSON images received yesterday, with a stop when the bottom of the pit becomes focused.
For more of this interesting rock, see the #reddestRock hashtag.
Raw SHERLOC_WATSON animated
looking down from RMC 56.3438
Sol 1242, LMST: 13:53:54
Credit: #NASA/JPL-Caltech/65dBnoise
@65dBnoise smoothed animation of sol 1243 SHERLOC close-ups with different illumination angles.
From the unprocessed raws:
#Solarocks #Mars2020 #PerseveranceRover #kratrarsombergeffekten #ReddestRock #MalgosaCrest
The above, combined monochrome SHERLOC_ACI and color SHERLOC_WATSON (a combo itself), animated:
#Perseverance #Mars2020 #NASA #Solarocks #Space #reddestRock
#Perseverance has spent quite some time examining the intricacies of this "reddest rock". So have we 🤓.
Here is a combination of two images (SHERLOC_ACI and WATSON) to create a new image inheriting the greater detail of the one and the color of the other (have a look at the originals).
Originals:
https://mars.nasa.gov/mars2020-raw-images/pub/ods/surface/sol/01242/ids/edr/browse/shrlc/SC2_1242_0777226501_414ECM_N0563438SRLC00244_0000LMJ01.png
https://mastodon.social/@65dBnoise/112983671557871471
Credit: #NASA/JPL-Caltech/65dBnoise
Craters, valleys, caves and sinkholes, maybe colonies of thousands, of millions of microbes thriving and dying here a billion years ago; a whole cosmos, imaginary or real, in ~ 1 inch of red rock.
Processed SHERLOC_WATSON
looking down (-77°) from RMC 56.3438
Sol 1242, LMST: 13:53:18
Credit: #NASA/JPL-Caltech/65dBnoise
The "reddest rock" proved to be crumbly, too.
Processed MCZ_RIGHT, FL: 110mm
looking SSE (153°) from RMC 56.3438
Sol 1242, LMST: 11:57:40
Credit: #NASA/JPL-Caltech/ASU/65dBnoise
The abrasion, though, appears to be not where the rock was zapped with the laser, which is where a distinct "discoloration" of the rock was observed in artificial light, but rather to the left of it, maybe leaving the "good" spot for a coming up sample?
Processed SHERLOC_WATSON
looking down (-74°) from RMC 56.3438
Sol 1240, LMST: 13:49:47
Credit: #NASA/JPL-Caltech/65dBnoise
That "reddest rock" #Perseverance has been examining for a number of sols now? Well, it's at least as red deeper as it is on the surface.
The rover has now abraded the #reddestRock.
Processed SHERLOC_WATSON
looking down (-74°) from RMC 56.3438
Sol 1240, LMST: 14:59:05
Processed, undistorted NAVCAM_RIGHT
looking SSE (157°) from RMC 56.3438
Sol 1240, LMST: 14:40:37
Originals:
https://mars.nasa.gov/mars2020-raw-images/pub/ods/surface/sol/01240/ids/edr/browse/shrlc/SIF_1240_0777030021_312EBY_N0563438SRLC01022_0000LMJ01.png
https://mars.nasa.gov/mars2020-raw-images/pub/ods/surface/sol/01240/ids/edr/browse/ncam/NRF_1240_0777028886_145ECM_N0563438NCAM00709_01_095J01.png
Credit: #NASA/JPL-Caltech/65dBnoise
Zapping rocks with a laser is even more fun; it scares the hell out of rocks, which, um…, give out gases you then analyze for fun and for science 🙃
The #reddestRock from the other sol is seen here zapped across a two color interface. Looks similar to the leopard spots of the Cheyava Falls rock, but without the dark outline.
Processed SHERLOC_WATSON
looking down (-79°) from RMC 56.3438
Sol 1238, LMST: 19:59:43
Credit: #NASA/JPL-Caltech/65dBnoise
This must be the reddest rock we've seen in Jezero, Mars, so far.
It's the same red rock we saw yestersol, but here the laser was fired so that #Perseverance could have a go at determining its chemical composition by analyzing the plasma created using its LIBS and Raman spectrometers.
Processed SUPERCAM_RMI
looking SSE (157°) from RMC 56.3438
Sol 1237, LMST: 13:27:53
Credit: #NASA/JPL-Caltech/LANL/CNES/IRAP/65dBnoise
