Lava from Mount Rainier
Part of Hall of Planet Earth.
From June 14 to June 22, the Museum is an early voting site for certain electoral districts in Manhattan. Find your early voting site at the NYC Board of Elections.
Part of Hall of Planet Earth.
These dacite samples from Mount Rainier are 93,500 years old. Their columnlike structure is the result of its rapid cooling against a glacier. Dacite is a characteristic lava of subduction-zone volcanoes, and has a composition between those of basalt and rhyolite, the volcanic equivalent of granite.
Loaned by Mount Rainier National Park