Volcano composed of alternating lava flows, layers of pyroclastic material, and debris flow deposits piled up around a central vent. Stratovolcanoes are typically 10 to 30 km (6 to 20 mi) in diameter, and have slopes that steepen gradually upwards towards their summits.
A large, steep-sided, symmetrical cone built of alternating layers (strata) of lava, ash, cinders, blocks, and bombs. Also called composite volcano, these stratovolcanoes form some of Earth's grandest mountains rising as much as 8,000 feet above their bases ( movie). of document
A stratovolcano is a tall, conical volcano composed of many layers of hardened lava, tephra, and volcanic ash. These volcanoes are characterised by a steep profile and periodic, explosive eruptions. The lava that flows from them is highly viscous, and cools and hardens before spreading very far.