pahoehoe lava
Kilauea produces a'a and pahoehoe lava flows.
Not usually. Most lava flows move at a fraction of a mile per hour. However, the lava flows of Niyragongo in Africa can move at up to 60 mph.
Basaltic flows much faster than rhyolite. Rhyolite is higher viscosity. Find a video of a basaltic lava flow like Hawaii, it flows like water when it's hot. Rhyolite eruptions usually act more like toothpaste if they're slow, or an explosion if fast.
Lava flows cool to form extrusive igneous rock. Most lava flows consist of basaltic lava, cooling to form a dark rock called basalt. Some, however, may consist of andesite or, rarely, rhyolite and similar lavas.
Kilauea volcano, located in Hawaii, is one of the most active volcanoes in the world. It has been continuously erupting since 1983. Kilauea has a shield-like shape, with gentle slopes formed by fluid lava flows. The volcano is known for both effusive (non-explosive) and explosive eruptions, with lava fountains and lava flows being common.
Yes. Lava flows can be extremely destructive. Since most lava flows move slowly, though, relatively few people have been killed by them.
No. Lava flows vary in composition. Most lava flows consist of basaltic lava, which can flow as smooth phoehoe or form jagged and broken a'a. Other lava flows are more viscous and will have blocky surfaces and tend to be short and thick.
Kilauea produces a'a and pahoehoe lava flows.
Not usually. Most lava flows move at a fraction of a mile per hour. However, the lava flows of Niyragongo in Africa can move at up to 60 mph.
Basaltic flows much faster than rhyolite. Rhyolite is higher viscosity. Find a video of a basaltic lava flow like Hawaii, it flows like water when it's hot. Rhyolite eruptions usually act more like toothpaste if they're slow, or an explosion if fast.
No. The fastest lava flows on earth have been recorded at Mount Nyiragongo in the Congo flowing at 60 mph (100 km/h). In most cases, however, lava flows very slowly. Blocky lava flows are the slowest, moving at speeds comparable to glaciers.
Lava flows cool to form extrusive igneous rock. Most lava flows consist of basaltic lava, cooling to form a dark rock called basalt. Some, however, may consist of andesite or, rarely, rhyolite and similar lavas.
pahoehoe or a'a rocks are the most common coming from a lava flow. pahoehoe or a'a rocks are the most common coming from a lava flow. pahoehoe or a'a rocks are the most common coming from a lava flow.
Kilauea volcano, located in Hawaii, is one of the most active volcanoes in the world. It has been continuously erupting since 1983. Kilauea has a shield-like shape, with gentle slopes formed by fluid lava flows. The volcano is known for both effusive (non-explosive) and explosive eruptions, with lava fountains and lava flows being common.
Most lava that forms on Earth's surface goes unnoticed because it typically occurs in remote or uninhabited areas, such as the ocean floor or within volcanic fields. Additionally, the scale of volcanic activity and lava flows can vary greatly, with some eruptions producing lava that flows slowly and may not attract widespread attention.
Mount Etna typically erupts with basaltic lava, which is low in viscosity and flows more easily compared to other types of lava. This can result in effusive eruptions with lava fountains and lava flows traveling long distances. The low viscosity of basaltic lava allows gases to escape more easily, reducing the risk of explosive eruptions.
In addition to suffocating ash and flowing lava, pyroclastic flows are probably the most dangerous feature of some volcanoes. Pyroclastic flows are currents of extremely hot gases and rocks that flow down and away from the slopes of volcanoes. They travel at speeds has high as 450 mph, and the temperature of the gas and rock can reach more than 1800° F (1000° C).