Volcanoes-Types-according-to-shape

Types of Volcanoes According to Shape

Objectives

  • Describe the types of volcanoes according to the shape of their cones.

  • Understand how the type of material emissions affects the volcano’s slope.

General Types of Volcanoes

  • Shield Volcanoes

    • Formed by the accumulation of non-viscous lava that flows freely.

    • Results in a broad, slightly domed structure resembling a warrior’s shield.

  • Examples:

    • Mauna Loa in Hawaii

    • Sierra Negra in Galapagos Island

  • Cinder Volcanoes

    • Built from ejected lava fragments.

    • Characterized by a steep slope and wide crater.

    • The most abundant of the three major volcano types.

  • Examples:

    • Smith Volcano

    • Mt. Paricutin in Mexico

    • Babuyan Island

  • Composite/Stratovolcano

    • Large, nearly perfect sloped structures formed from the alternate solidification of both lava and pyroclastic deposits.

  • Examples:

    • Mt. Mayon

    • Mt. Fuji

Summary of Types

  • Shield Volcanoes: Broad, low profile.

  • Cinder Volcanoes: Steep, narrow profile.

  • Composite/Stratovolcanoes: Large, perfect slopes with alternating material types.