如今层状的尤耶亚科火山(由一层一层的火上熔岩和火山喷发产生的灰尘和碎石形成的火山锥)是在一座更加古老的层状火山上形成的。
The current stratovolcano — a cone-shaped volcano built from successive layers of thick lava flows and eruption products like ash and rock fragments — is built on top of an older stratovolcano.
火山渣锥火山是，当爆发时，高气体含量和高粘度的熔岩被喷发到空气中而形成的。
Cinder cone volcanoes are formed when magmas with high gas contents and high viscosity are blown high into the air during an eruption.
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