Basalt tablet main content.

Basalt tablet

A basalt tablet, a specimen with a number six marker on it, in the Museum’s Hall of Planet Earth. Appears as long bumpy pitted section of rock. AMNH/R.Mickens

Exhibition Text

The composition of the magma that formed this tablet was basically unchanged by its journey from the mantle to the surface, where it erupted to form a smooth, sinuous lava flow.

AMNH collection

For Educators

Topic: Earth Science

Subtopic: Volcanoes

Keywords: Medicine Lake (Cal.), Basalt, Magmas, Lava, Volcanism, Volcanic eruptions

Audience: General