file Ancient Martian Artifacts All Around Perseverance Rover

2 years 9 months ago #17177 by WillFarrar
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2 years 9 months ago #17180 by Todd
I like this piece. It looks like a chunk of melted down masonry with the separation of the brick inlay still visible. 



NASA/JPL-Caltech/ASU originals
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2 years 9 months ago #17181 by Todd
The only place I've ever seen anything that looks like this naturally is the basalt columns of Giant's Causeway. Large amounts of magma settling into beds of chalk (limestone & calcite) then contracting into multiple split columns after solidification and drying. What we have found so far in Jezero besides basalt is mostly carbonites with clay minerals, sulphates with iron oxide and amorphous silicon oxides. Not the kind of minerals I would think could be responsible for the Causeway process. Basalt is also frequently used in construction.

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