March 20, 2012

Monday Geology Picture: Botryoidal Ferromanganese Crust from the Ninetyeast Ridge, Indian Ocean

Posted by Evelyn Mervine

Botryoidal ferromanganese crust dredged from the Ninetyeast Ridge, Indian Ocean, Summer 2007.

For this week’s geology picture, I thought I would share a picture of a neat botryoidal (grape-like texture) ferromanganese crust that was recovered during dredging along the Ninetyeast Ridge in the Indian Ocean in 2007. Ferromanganese crusts and nodules are commonly deposited in the ocean. They often form botryoidal shapes, such as the example above.