Pipkin (volcano)

Pipkin (also known as Malpais Crater) is a volcano in California, with activity during the Quaternary. The surface of erupted lava flows is weathered, and argon-argon dating and potassium-argon dating has yielded ages of 770,000 ± 40,000 and c. 600,000 years before present, respectively. The cone is the site of a quarry. Pipkin was mined since the 1950s for its ash.

Pipkin (volcano)

Pipkin (also known as Malpais Crater) is a volcano in California, with activity during the Quaternary. The surface of erupted lava flows is weathered, and argon-argon dating and potassium-argon dating has yielded ages of 770,000 ± 40,000 and c. 600,000 years before present, respectively. The cone is the site of a quarry. Pipkin was mined since the 1950s for its ash.