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Cascade Volcanoes


The Cascade Volcanoes are a number of volcanoes in a volcanic arc in western North America, extending from southwestern British Columbia through Washington and Oregon to Northern California, a dista...

What type of magma does Mount Shasta have? | Reference.com


Mount Shasta's magma is composed of basalts and basaltic andesite. These two types of magma are very runny, forming large shield cones and steep, loose ...

Learning more about Mt. Shasta in California


Studies by geologists show that Mount Shasta has erupted 10 or 11 times during the last 3,400 years and ... The type of eruption would most likely be explosive.

Lava flows at Mount Shasta - Volcano Hazards Program - U.S. ...


Nov 14, 2011 ... USGS: Volcano Hazards Program - California Volcano Observatory USGS Volcano Science Center Mount Shasta hazard information.

GO 326/ES 767 Cascade volcanism - Emporia State University


Other lava types span the spectrum of composition from basalt, to dacite and ... Similar events have occurred at Mt. Shasta and other Cascade volcanoes in ...

Geologic History of Crater Lake. - Oregon Explorer


Crater Lake partially fills a type of volcanic depression called a caldera that formed ... The climactic (caldera-forming) eruption of Mount Mazama changed the ... of activity similar to other Cascade volcanic centers such as Mount Shasta. ... Rare particles of Mazama ash have even been found in ancient ice from Greenland.

Mount St. Helens Has Nothing on Its Little-Known Neighbors | WIRED


Feb 21, 2016 ... Some of the lava did reach the surface as a few small spatter cones are found along ... These types of eruptions tend to be monogenetic—that is to say that the ... This is different than a polygenetic volcano like Shasta that has ...

Untitled Document


The shape of a volcano is largely determined by the type of lava that has ... The more mafic the lava (the less silica in it), the lower the viscosity. ... Consequently, the viscosity increases in the remaining magma and it does not flow ... Mt. St. Helens, Mt. Ranier, Mt. Hood, and Mt. Shasta in the U.S. Pacific Northwest, Mt. Fuji in...

Most dangerous volcano in North America: Popocatépetl, Shasta ...


Jul 25, 2013 ... MEXICO CITY—When you live in Mexico, you get used to people in ... “What kind of question is that? ... Ash rises after a mild eruption of Mayon Volcano in Legazpi city ... Like me playing poker, it's easy to tell what Popo is about to do. ... and then listed Mount Shasta in California and Mount Hood in Oregon, ...

Volcano Facts and Types of Volcanoes - Live Science


Feb 20, 2013 ... A volcano is a vent or fissure in Earth's crust through which lava, ash, rock and gases erupt. A volcano is also a ... Mount St. Helens has several well-defined lava domes inside the crater. Other volcanic ... Mount Shasta, California: Last known eruption was in 1786. ... singe use only, do not archive Japanese ...

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What type of volcano is Mt. Shasta? | Reference.com


Mt. Shasta is classified as a steed-sided stratovolcano. ... What are three different types of volcanoes? ... What type of lava does Mt. Rainier have? Q: ...

California's Mt. Shasta Volcano | Unofficial Networks


Mar 18, 2013 ... Shasta is by far not the largest of the Cascade volcanoes, but it has produced the most lava of any of them. It is made of at least four different ...

Volcanoes: Principal Types of Volcanoes


Jan 3, 2011 ... Most cinder cones have a bowl-shaped crater at the summit and rarely ... This order of events--eruption, formation of cone and crater, lava flow--is a ... Mount Shasta in California, Mount Hood in Oregon, and Mount St. Helens ...