Vents that issue volcanic material (including lava and ash) and gases (mainly steam and magmatic gases) can develop anywhere on the landform and may give rise to smaller cones such as Puʻu ʻŌʻō …

Jan 8, 2026 · Strictly speaking, the term volcano means the vent from which magma and other substances erupt to the surface, but it can also refer to the landform created by the accumulation of …

Volcanoes are openings, or vents where lava, tephra (small rocks), and steam erupt onto the Earth's surface. Volcanic eruptions can last days, months, or even years.

Dec 8, 2025 · Hawai‘i Volcanoes National Park protects some of the most unique geological, biological, and cherished cultural landscapes in the world. Extending from sea level to 13,680 feet, the park …

Jul 10, 2025 · Volcanoes are Earth’s geologic architects. They’ve created more than 80 percent of our planet’s surface, laying the foundation that has allowed life to thrive. Their explosive force crafts...

Articles, facts, information and photos for volcanoes and volcanic activity. | Geology.com

The Global Volcanism Program documents, disseminates, and archives eruption information to better understand worldwide volcanic activity. Reports are produced on daily, weekly, and multi-month …

Feb 25, 2025 · Volcanic "bombs" are chunks of semimolten lava that fly out of a volcano and solidify as they land. They're often flung miles from the volcanic crater.

6 days ago · Discover how volcanic eruptions affect global weather patterns and climate. Learn about volcano climate impact, sulfate aerosols, cooling effects, and long-term atmospheric changes …

The Navajo (Dine) volcanic field extends from Gallup and Farmington, New Mexico to Window Rock, Arizona. It consists of the eroded remains of very old volcanoes that erupted around 30 million years …