Lava is the form of magma that erupts to the surface, ... According to Oregon State University, these are the temperatures of common lava types: Rhyolitic lava: 1292 to 1652 degrees Fahrenheit; ...

In geology, even small layers can tell big stories. But figuring out the origins of such small layers can be a challenge, ...

The West Yellowstone rhyolite lava flow is located along Highway 20 (between the West Entrance of Yellowstone National Park and Madison Junction). The flow is approximately 111,000 years old and ...

Learn more about the new hydrothermal feature that appeared last summer in Yellowstone National Park, and how, even though it ...

Previously, it was thought that the youngest eruption in the region was the rhyolite lava of the Pitchstone Plateau about 70,000 years ago, while the youngest known basalt flow was 120,000 years old. ...

That's not what you get with bimodal volcanism. At places like Yellowstone (see above) or Medicine Lake in California, you only see two types of lava erupted: basalt and rhyolite. None (or very ...

Rhyolitic lava is felsic; the name is derived from feldspar and silica, which are present in high concentrations. Intermediate lavas, including andesitic, fall somewhere in between. One kind of lava ...

Compare that with the modern Laguna del Maule, where a few dozen small rhyolite lava flows have erupted in the past 20,000 years, you can begin to see why we want to watch it carefully.

Puyehue-Cordón Caulle shot out a massive amount of rhyolite lava between its first eruption, in June 2011, and the last dribbles in April 2012. Because the rhyolite was very thick, ...

A slow-moving lava flow made of glass is still inching its way down a volcano in Chile, nearly a year after it first erupted, geologists recently discovered. IE 11 is not supported.