Magma

On May 18th, 1980 a fiery explosion erupted from a quiet mountain in Washington State, only 100 miles from Seattle. For hundreds of miles thick, dark smoke blew everywhere, and herds of animals, along with huge parts of the forest, left completely demolished. Until many years later, entire ecosystems wiped out entirely. To avoid being completely destroyed, dozens of families evacuated from their property. But geologists learned stuff, so it’s all cool. First and foremost, this whole mess began

that occurs due to intense heat and pressure. The examples of this rocks includes gneiss and marble. The rock cycle explains the relations between the three different types of rock. Any of the igneous, sedimentary, and metamorphic rocks can melt into magma and cool into igneous rocks. When particles from the former rocks compact and cement together, sedimentary rocks are formed. Rocks that are exposed to high temperatures and pressures can be changed physically or chemically to form a different rock

off, the Big Island is known for its active volcanoes, meaning it constantly erupts and spews lava. Geologists actually has a way to forecast the eruption of the volcanoes. “Seismometers can be used to pinpoint earthquakes which track the rise of magma and its movement along fissures.” (volcanoworld) This means that geologists uses seismometers in predicting volcanic eruptions so they can warn people about it. In conclusion, geologists can predict a volcanic eruption using multiple instrument, seismometer

Well-known volcanoes on land include Mount St. Helens in Washington State and Mount Fuji in Japan. Sometimes volcanic eruptions break down mountains instead of building them up, like the 1980 eruption that blew the top off Mount St. Helens. When magma pushes the crust up but hardens before erupting onto the surface, it forms so-called dome mountains. Wind and rain pummel the domes, sculpting peaks and valleys. Examples include the Black Hills of South Dakota and the Adirondack Mountains of New York

Vesuvius and St. Helens, have many traits in common. For example, when these two volcanoes erupted, they both made a huge ash cloud. Also, they both began with harmonic tremors, which are small earthquakes, that includes the venting of gases from the magma of volcanoes. Also, they spewed tons of ash and pumice.

common types of metamorphism. (1 point) 1.One of the most common types of metamorphism is regional metamorphism, is also called dynamothermal metamorphism. 2.The second one is contact metamorphism is the process by which rock that surrounds a hot magma is metamorphosed. 6.Describe the characteristics of a foliated metamorphic rock. (1 point) The characteristics of a foliated metamorphic rock is its high temperatures and pressures, and its shiny crystallized look as well. 7.Put the four metamorphic

Throughout the first eight weeks of Physical Geology I, I have learned more about the Earth, how it works, and natural disasters than I have in my entire educational career. We have analyzed everything from the different types of rocks to several different natural disasters such as volcanoes and earthquakes. However, one thing in particular caught my attention and fascinated me through its sheer power and destruction. Volcanoes are intriguing, and they have the force and destructiveness to wipe out

Imagine hiking up a dormant volcano and all of a sudden the volcano starts to rumble What’s the cause? The cause of the volcano occur when an underground chamber overflows creating an explosion out the top of the volcano. Volcanoes can have effects on the land and its people. When volcanoes erupt they can have some drastic but beautiful changes to the earth. The author of the informational article, Russell McDonaugh, states that “Depending on the location of the volcano, it can take thousands of

Wouldn’t it be cool to walk in a lava tube where there once was liquid hot magma flowing through it before? I walked through the lava tubes on my Hilo trip. When I walked through it, it was very wet and very dark. It was wet because when it rains it would absorb through the top and then never evaporate because there is no sun. It was very cool when I walked through it because there is nothing like that on Oahu. There are many similarities and difference about Hilo and Oahu. To begin with, Oahu

T et al, 2007). Kieffer et al., (2004) studied the petrology, geochemistry, and isotopic compositions of the large shield volcanoes, compared their compositions with those of the flood volcanic and also traced the variations in eruption style and magma flux of lavas with ages ranging from 30 to ~10 Ma, (from the peak of flood volcanism to the onset of major rifting in the northern part of the volcanic plateau).