<span class="gmail_quote"></span>* Some methane gas sources are certainly *not* of biological origin.<br>
<div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>The latest support for Gold comes from experiments by H. Scot, Indiana<br>University, who subjected water and marble to the environment expected
<br>at depths of 12 miles and more. Sure enough, the water's hydrogen combined<br>with the marble's carbon to form methane (CH4).<br><br>Such abiotic processes could provide us with "fossil" fuels for millennia.
</blockquote><div><br>
I wonder if the same or similar process is responsible martian methane, rather than sub-surface biology.<br>
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</div></div>-- <br>Paul C.<br><a href="http://lockeinghobbes.blogspot.com/">http://lockeinghobbes.blogspot.com/</a>