East Pacific rise pillow basalt
Due to the weather, the Museum is closed on Tuesday, January 27. All Tuesday programs and some Wednesday programs have been cancelled. Please check here for a full list, and check back for regular updates.
The Museum will be open on Wednesday, January 28, during regular hours, from 10 am to 5:45 pm.
Regular updates will also be posted to our Facebook page and Twitter account (@AMNH).
The reddish rind on this pillow is made of palagonite, a clay-rich layer that formed when pillow’s hot exterior reacted with cold seawater. The black manganese minerals on the surface build up over time, indicating that this pillow is older than others displayed here.
Loaned by the Scripps Institute of Oceanography
Topic: Earth Science
Keywords: Basalt, Lava, Magmas, Mid-ocean ridges, Ocean bottom, Palagonite, Volcanic eruptions, Volcanoes