Lava dome

At about 9.30 on August 21, 1986, rumbling sounds lasting 15-20 seconds brought people out of their Cameroon homes in the small village of Nios. Not minutes after, a lethal gas cloud pooled out of nearby Lake Nyos and spread over the town. People reported smelling an odor like rotten eggs or gunpowder, felt a warm feeling, and quickly lost consciousness. Survivors, who woke 6-36 hours, felt disoriented and weak, and found that their friends and family were all dead. About a day later began the…

One location where the earth will be different from now is the Andean Volcanic Belt. This group of volcanoes are located near the western coast of South America, near the Andes mountains. From the Volcano Map, it can be seen that there is a large array of volcanos in certain spots of western South America. I believe that this particular formation will continue to form more and more volcanos as time goes by. This would most likely happen because of the subduction boundary going on (South American…

African and Eurasian plate. It was formed because the African plate subducted under the Eurasian plate. It has explosive types of eruptions from its 3 summit crater and the lava is pahoehoe. Mt. Etna has the longest recorded eruption history of any volcano. Its most destructive and violent eruption happened in 1669, when the lava decimated 14 towns and villages, leaving 27,000 people homeless. In 1669, it was distinct that Mt. Etna was progressing to erupt. It had…

Mid ocean ridges is the creation of the motion diverging plates and it is an underwater mountain range which are formed by plate tectonics. It consist of mountains linked together, having a valley running along the spine, and its known as an oceanic spreading center which is in charge of the seafloor spreading. New seafloor is being produced when convection currents rise in the mantle layer which is under the oceanic crust, it then create magma that cools down into basalt where two plates is…

subsequent eruption more violent. The big eruption in 79 A.D had a huge impact on the vegetation in the surrounding areas. The entire region was left covered in three meters of ash turning it into a desert wasteland. Any plants that came in contact with the lava died. The harmful greenhouse gas was also one of the many dangerous toxins that came from the eruption. Mount Vesuvius is today a huge tourist attraction. On June, 1995 Mount Vesuvius surrounding area became an official National Park.…

is describing as a third rock in the reading passage. The reading passage informs us about the characteristics of the three rocks. The most common rock is Igneous rock which means fire. The example of it is granite. By cooling and solidification of lava, igneous rock will be formed, and this makes up approximately 64.7% of the earth’s crust. The second common one is Sedimentary rocks, which means sit, and the representative example is Sandstone. Sedimentary rock is composed of a little particle…

caused an enormous landslide/avalanche going close to 150 mph. A huge hazard from this event was the pyroclastic flows, which were allowed to escape because the landslide reduced the pressure keeping it in there. Extremely hot ash, poisonous gases, and lava fragments flowed down the mountain at speeds quicker than 200 mph. Mt. St…

Believe it or not volcanos from the past are good for today. So back in the day when volcanos erupted they would deposit rock and minerals into the ground where farmers would have their crops. So today after so many years the soil where the farmers planted their crops is so rich from the deposit of rocks and minerals into the soil. For example when you have rich soil that means two thing that your crops are going to be good. Then the last thing that is that your pastures are going to be good…

If I were to ever be involved in an volcanic eruption, my first initial action would be to take shelter, or try to evacuate the area that’s potentially hazardous. This is something that no one prepares for if they aren't around volcanoes, but anything could happen in todays world. Its always best to have an evacuation plan for yourself and your family no matter the situation. There are many ways you could prepare. You should always make sure that you have emergency food and water. You should…

This week I learned about the three different types of volcanoes and the types of volcanic hazards associated with each type of volcano. This information is important to me because now I understand the hazards associated with living in certain parts of the country that have volcanoes. I understand that the volcanoes found in Hawaii (Shield volcanoes) erupt differently and pose different dangers than the volcanoes in the Cascade Mountain Range (Composite volcanoes). Since I live in Portland,…