9dhuu ((OPHIOLITE)), $1 MINIMUM BID, Oxec Deposit, Guatemala, Mid Oceanic Ridge, 6 x 4 x 3.2 cm, Miniature, | |
Ophiolite is a piece of the oceanic plate from the upper mantle that has been thrust onto the edge of the continental plates. Again this is an interesting rock type. ex University of Utah Dept of Geol and Geophys. |