The Arthur Ross Terrace will be closed this morning, Tuesday, October 21, for a private cultural observance. You many observe smoke and/or fire coming from the Terrace at that time. The FDNY has been notified in advance, and all safety precautions are in place. The Terrace will reopen at 1 pm.
Peridotite, a rock made up primarily of the minerals olivine and pyroxene, is the chief constituent of the Earth’s upper mantle. The mantle comprises almost 80 percent of the planet by volume.
DENSITY= 3.13 gm/cm(3)
Topic: Earth Sciences
Subtopic: Earth Structure
Keywords: Earth (Planet)--Mantle, Geology, Peridotite