原文 Yellowstone National Park The Rocky Mountains of North America are quite old. Even though they were very volcanic millions of years ago, only a couple was still active today. In Yellowstone National Park, however, there is a large area of land, which indicates recent volcanic activity. ...
volcanic activity in the Yellowstone area began about two millionyears ago.This activity created violent explosions and built mountains and valleys.Expertsbelieve this super volcano had three major explosions called eruptions(喷发).Each of thosethree eruptions may have been more powerful than any in ...
Yellowstone Bubbling With Volcanic ActivityJohn Roberts, Sandra Hughes
The cause of the volcano is the hotspot on which Yellowstone is located. At a hotspot, molten mantle rock tends to rise toward the surface causing different geological activity. Volcanic eruptions from the hotspot also helped form the Snake River Plain. Not only do volcanic eruptions occur around...
Three videos featuring a USGS scientist who explains the historic and current volcanic activity beneath Yellowstone Park.
The Caldera TodayIs Yellowstone's history of volcanic activity at an end? Has time tamed its explosive violence, leaving only a heritage of aging geysers and eroding lava flows? Has the magma chamber beneath Yellowstone exhausted its supply of molten rock? Is it now incapable of producing more...
” describes current volcanic activities of this area and how it has expanded and transition from its previous super-eruptions to what has happen now, and what changes could another volcanic reaction cause for this area. Ellis and Darren wrote that the “. . . evidence of volcanic activity is...
researchers have announced the discovery of two newly identified super-eruptions associated with the Yellowstone hotspot track, including what they believe was the volcanic province's largest and most cataclysmic event. The results indicate the hotspot, which today fuels the famous geysers, mudpots, an...
… Monitoring data show no changes in the Yellowstone region. Today's explosion does not reflect activity within volcanic system, which remains at normal background levels of activity. Hydrothermal explosions like that of today are not a sign of impending volcanic eruptions, and they are not cause...
leaving an enormous caldera 28 by 74 miles wide. The magma chambers that were responsible for the Yellowstone volcanic activity are still active beneath the surface today. The bubbling mud pools, the sulfur springs, heated pools and geysers you see in the Yellowstone Nationa Park are all the re...