Bloodstone

Sanguinary shades.

A touch of ironstone

Geological using a pale background.

Gneiss

Nice?

Rare strata

You don't see these very often...

The Great Mining Disaster

A fairly painterly impression of subterranean flux.

Delta

Although this is only a simple twist on gnarled glynnias, the result is so different that it deserves its own moniker. Geological abstract? Whatever, it's something that needs to be rendered internally as Chaotica still renders some glynnias differently.

Natural abstract

Inspired by http://www.darkroastedblend.com/2010/05/mother-nature-as-abstract-artist.html

Born molten

The genesis of rock, slop-slopping-folding over itself, always seeking the low point in gravity's well.

A splits/elliptic re-touched in the GIMP for colours. Underworld fans will see plagiarism in the title :D