According to the "special" dictionary...

[tephra]

A very "special" dictionary. by lily22
Look up:
Definition:	One who doggedly pursues goals, no matter what the cost, in the hopes that somehow, in the end, an impossibility might be achieved; a masochist.
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Unfortunately 'tephra' is a real word in real dictionaries (Merriam-Webster in this case):
Main Entry: teph·ra
Pronunciation: 'te-fr&
Function: noun
Etymology: New Latin, from Greek, ashes; akin to Sanskrit dahati it burns
: solid material ejected into the air during a volcanic eruption; especially : ASH

I must admit that both seem to fit me...

Now I'm going to go get all moody over not doing geology again. I always did like volcanology, even if I did focus more on structural geology and geomorphology.