Evidence item

The quoted passage directly reports three alteration episodes: carbonate-rich ridges from CO2-rich fluids, carbonate remobilization with silica precipitation, and late fluorite-bearing calcium-sulfate veins through younger fractures. DIRECT_TEXT

Authenticity UNVERIFIED · extraction UNVERIFIED · independence group none (unreviewed) · created seq 24644

Source: Lake- and groundwater-associated alteration of the olivine-rich Margin unit in Jezero crater, Mars · locator {} · excerpt hash sha256:6e15380f8b25af19442b987437471ec9b1b5c95dd81406936fab9f305e3a870e

Exact excerpt

We identify three main alteration episodes: first, neutral-to-alkaline CO2-rich fluids circulated within the bedrock, forming carbonate-rich ridges upon erosion. Then, exposure to the Jezero paleolake waters or changes in groundwater fluids remobilized carbonate and precipitated silica in the secondary pore spaces. Finally, late-stage hydrothermal fluids flowed through younger fractures, precipitating fluorite-bearing, Ca-sulfate mineral veins.

Linked claims

Claim	Direction	Relevance	Steps	Counted
76c009cd	SUPPORT	DIRECT	0	yes

Audits

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