What is the temperature of lava in a volcano?
The temperature of lava flow is usually about 700° to 1,250° Celsius, which is 2,000° Fahrenheit. Deep inside the earth, usually at about 150 kilometers, the temperature is hot enough that some small part of the rocks begins to melt. Once that happens, the magma (molten rock) will rise toward the surface (it floats).
What lava do stratovolcanoes have?
The lava flowing from stratovolcanoes typically cools and hardens before spreading far, due to high viscosity. The magma forming this lava is often felsic, having high-to-intermediate levels of silica (as in rhyolite, dacite, or andesite), with lesser amounts of less-viscous mafic magma.
Do stratovolcanoes have thick lava?
A bubble or plug of cooling rock forms over a fissure. This cooler, thick lava usually rises near the end of an explosive eruption and lava domes often form within the craters of stratovolcanoes. Helens has several well-defined lava domes inside the crater, according to NASA.
Does lava melt bones?
But yes, you’re correct. Anything living that has bones would certainly be destroyed by lava.
What’s the temperature of lava when it comes out of a volcano?
The temperature of lava when it is first ejected from a volcanic vent can vary between 700 and 1,200 degrees C (1,300 to 2,200 F). As you probably know, lava is molten rock that comes out of a volcano during an eruption.
What’s the temperature of the lava from Mount St Helens?
In the middle range of lava temperatures, the dark red lava often seen slowly crawling across parts of Hawaii , measures around 895 F. Mount St. Helens ejected material of a similar temperature, although this material flew from the mountain at 100 mph, according to USGS. However, once a volcano gets going, the mercury really starts to climb.
How tall can a stratovolcano volcano grow to be?
Stratovolcanoes can have clusters of vents, with lava breaking through walls, or issuing from fissures on the sides of the mountain and can grow thousands of meters tall. As was demonstrated by the 1980 eruption of Mount St. Helens, composite volcanoes can explode violently.
How big was the caldera of the stratovolcano?
When the volcano erupted, the global temperatures dropped around three degrees Celsius, which is no surprise as ash was ejected 50 kilometers into the atmosphere. Because the stratovolcano erupted so much material, it caved in after the eruption was complete and in the process created a caldera that is large enough to be visible from space.
