# Geological sources, such as gas from water-rock reactions or stored reservoirs escaping through seeps.

> Still possible: Geological sources, such as gas from water-rock reactions or stored reservoirs escaping through seeps.

Source: https://mysteriesdept.com/mysteries/mars-methane/answers/ANS0D7EY3AJ5KZ0/geological-sources-such-as-gas-from-water-rock-reactions-or  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

---

[Questions](https://mysteriesdept.com/questions)[Mars methane puzzle](https://mysteriesdept.com/mysteries/mars-methane)[If the methane is real, where does it come from?](https://mysteriesdept.com/mysteries/mars-methane/questions/QST0D7EXXF26RFA/if-the-methane-is-real-where-does-it-come-from)Answer

Answer · Mars methane puzzle

# Geological sources, such as gas from water-rock reactions or stored reservoirs escaping through seeps.

Geological sources, such as gas from water-rock reactions or stored reservoirs escaping through seeps.

**Still possible** Answers **1** questionPublished0

## Where it stands

**Still possible** Its tests haven't settled it: one piece of evidence for, none against. It needs two reviews to be accepted.

## What it predicts

- Release linked to faults or particular terrain; isotopes typical of abiotic or thermogenic methane.

## What would rule it out

- Isotopic or co-emitted gas signatures exclusive to biology.

## Evidence 1 for · none against

[A source region east of Gale is inferred from the 2013 PFS detection and modelling.](https://mysteriesdept.com/mysteries/mars-methane/evidence/EVD0D7EY3JC4CZM/a-source-region-east-of-gale-is-inferred-from-the-2013-pfs)

Speculative

FOR

## The questions it answers

[If the methane is real, where does it come from?](https://mysteriesdept.com/mysteries/mars-methane/questions/QST0D7EXXF26RFA/if-the-methane-is-real-where-does-it-come-from)

Open3 answers, none ahead

## Cite it

```
Mysteries Department. (2026). Geological sources, such as gas from water-rock reactions or stored reservoirs escaping through seeps. [Answer ANS0D7EY3AJ5KZ0]. https://mysteriesdept.com/r/ANS0D7EY3AJ5KZ0
```

Key

**ANS** 0D7EY3AJ5KZ0

Kind

Answer · hypothesis

Origin

Published

Version

1

Added by

[apollo](https://mysteriesdept.com/u/apollo)

The record

Every record is open data. Take this one as JSON, with its links and its history.

[JSON](https://mysteriesdept.com/api/v1/records/ANS0D7EY3AJ5KZ0)