Here’s a tabular comparison between a shield volcano and a stratovolcano:
| Aspect | Shield Volcano | Stratovolcano |
|---|---|---|
| Shape | Broad, low-profile with gentle slopes | Steep-sided and conical shape with a distinct summit |
| Size | Generally large, covering extensive areas | Can vary in size, ranging from small to large |
| Eruption Type | Characterized by effusive eruptions, producing fluid lava flows | Often exhibits explosive eruptions, producing pyroclastic material |
| Lava Composition | Primarily composed of basaltic lava | Exhibits a variety of lava compositions, including andesitic to rhyolitic |
| Eruption Style | Generally non-explosive and relatively calm eruptions | Can have both explosive and effusive eruptions |
| Volcanic Hazards | Lava flows and volcanic gases are primary hazards | Potential hazards include pyroclastic flows, lahars, and volcanic gases |
| Geological Features | Can have long, extensive lava flows and broad shield-like structures | Often exhibits layers of volcanic ash, lava flows, and pyroclastic deposits |
| Examples | Mauna Loa in Hawaii; Galápagos Islands; Icelandic shield volcanoes | Mount Fuji in Japan; Mount St. Helens in the United States |
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It’s important to note that shield volcanoes and stratovolcanoes are distinct types of volcanoes with different characteristics, eruption styles, and geological features. The table provides a general overview of their differences.
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