Changes

332 bytes added , 14:29, June 8, 2007

creating a wanted article

{{Geology Index}}

Oblique-slip fault

Obsidian

Octahedral coordination

Oil field

Oil shale

Old age

Oolite

Opaque mineral

Ophiolite suite

Orbit

Ore

Ore mineral

Original Horizontality, Principle of

Orogenic belt

Orogeny

Oscillation ripple

Outcrop

Outgassing

Outwash

Oxidation

Oxidized element

[[Category:Geology]]