Unit 4 Assignment: Understanding Igneous Rocks and Volcanic Hazards

This document is the property of the University System of Georgia and is protected by the USG copyright policy. This document is not to be uploaded to any third-party site. Using this document for anything other than educational purposes among students in this course is a violation of the Academic Integrity policies of this course on behalf of the student and a violation of copyright law on behalf of the third- party site. Unit 4 Lecture Assignment (2024): Igneous Rocks and Volcanic Processes NAME: _______________________ Date_________________ Use the link https://volcanoes.usgs.gov to access the USGS volcanic hazards program website. Follow the instructions and use the information provided on the USGS website to answer the following questions. DO NOT COPY AND PASTE ANSWERS FROM THE INTERNET AND/OR YOUR CLASSMATES’ WORKSHEET. This assignment will be scanned through a 3 rd -party system to check for answers that are copied and pasted. If you cheat on this assignment in any way, you will receive a 0 and have a report filed with SEADS . Once you have completed this worksheet, submit this assignment as a Word document or PDF (NOT a pages, .HEIC, .HTM, Google doc, or .zip file) to Dropbox. ALL ANSWERS MUST BE WRITTEN IN BLUE FONT! 1. The USGS volcano hazards site is a public access page for all of the volcanoes in the United States. Look around the webpage and explore the interactive map. Take note of the symbols for volcanic alerts. What are the colors of the triangles for each of the following:  Normal: Green  Advisory: Yellow  Watch: Orange 2. Study the United States closely. Are there any volcanoes located along the east coast? Using your knowledge of plate tectonics, provide an explanation to support your answer. As I observed the USGS website there are no volcanoes located along the east coast. A reason this could be is because the east coast isn’t located near any subduction zones or other tectonic process that will most likely lead to the formation of volcanoes. 3. Scroll down below the interactive map. There is a heading, “Volcano Activity Notifications”, with a green button beneath that says “Get Latest Updates”. Click this green button. Scroll through the list of volcanoes with an elevated status. In the space below, name a volcano with an elevated status, what the elevated Advisory Color Code is, and the date it was updated. Great Sitkin, The elevated Advisory color code is Orange and the date it was updated was 02-05-2024 at 20:37.

This document is the property of the University System of Georgia and is protected by the USG copyright policy. This document is not to be uploaded to any third-party site. Using this document for anything other than educational purposes among students in this course is a violation of the Academic Integrity policies of this course on behalf of the student and a violation of copyright law on behalf of the third- party site. 4. Notice that in the description of elevated status, there are abbreviations such as AVO and HVO. Along the top of this page, next to the Elevated tab, there are more of these abbreviations. These indicate the volcano observatories in the U.S. Go back to the volcano hazards main page (click on “Home” on the left of the page). On the right side of the homepage, there is a list of volcano observatories in the U.S (below the interactive map). How many volcano observatories does the U.S. have? Name them. The US has 5 Volcano observations, Alaska Volcano Observatory(AVO) USGS California Volcano Obsercatory(CalVO), USGS Cascades Volcano Observatory(CVO), USGS Hawaiian Volcano Observatory(HVO) and Yellowstone Volcano Observatory(YVO) 5. Click on the Yellowstone Volcano Observatory (YVO) link. Browse around the page a bit. a. What is Yellowstone’s current Advisory Color Code? Green,Normal b. Scroll down the page. Under YVO Quick Links, click Yellowstone Volcano Hazards. What are the TWO main hazards to occur within the next few decades? Large and Moderate Earthquakes and Hydrothermal explosions. c. Continuing on this page, how many explosive volcanic events has Yellowstone had in the last 2.1 million years? Three d. Yellowstone is famous for its geothermal waters that create hot springs and geysers, but this creates one of Yellowstone’s most dangerous and frequent hazard: hydrothermal explosions. Hover your mouse over this term on the Yellowstone Hazard page and describe what a hydrothermal explosion is. Using what you’ve learned from this unit, describe how the groundwater in Yellowstone becomes heated. Explosion that can occur When hot water within a volcano’s hydrothermal system flashes to steam, breaking rocks and throwing them into the air.

This document is the property of the University System of Georgia and is protected by the USG copyright policy. This document is not to be uploaded to any third-party site. Using this document for anything other than educational purposes among students in this course is a violation of the Academic Integrity policies of this course on behalf of the student and a violation of copyright law on behalf of the third- party site. e. Go back to the YVO main page. Under YVO Quick Links, click on The Truth About Yellowstone. This was an article written in 2015 that still holds true today. List and briefly (1-2 summarizing sentences) describe ONE of the 5 most common misconceptions about Yellowstone. Make sure that after you write the misconception heading, you describe the misconception IN YOUR OWN WORDS. This will demonstrate your ability to synthesize and explain information you read. Do NOT write all 5 misconceptions – pick one to write about. Misconception #1: When Yellowstone erupts…. it'll be Armageddon. In summary a big eruption at Yellowstone could be serious, most of the time the eruptions are simple lava flows and not as explosive as some people think they are. 6. At the top of the YVO page, click the link that says Observatories. This should take you to the page where all of the volcano observatories in the U.S. are listed. Select an observatory besides Yellowstone. Select a volcano from anywhere on the interactive map that is currently being monitored. Click on the triangle and click “Go to Site”. Answer the following questions about your selected volcano (HINT: most volcanoes have a list of Quick Facts on the right of their webpages next to the Summary; this will help you to answer some of these questions): a. Name of volcano: Salton Buttes b. What is the volcano type and composition? Lava Dome and rhyolite c. When was the most recent major eruption? 1,800 years ago d. What is the current threat potential? Why is this volcano labeled with this threat potential? High, because its located near many populated areas.

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This document is the property of the University System of Georgia and is protected by the USG copyright policy. This document is not to be uploaded to any third-party site. Using this document for anything other than educational purposes among students in this course is a violation of the Academic Integrity policies of this course on behalf of the student and a violation of copyright law on behalf of the third- party site. e. What are the 2 main volcanic hazards associated with this volcano? Why are they of greatest concern? (HINT: You will need to read the summary of your volcano to answer these questions, as well as click on links that may be included on your volcano’s site to adequately answer these questions) Ash/Tephra and lava flows this raise concern while lava or ash has a small percentage of endangering human life it could have negative effects on many other important factors in our lives, such as: Transportation, damage to corps and can have a great effect on someone’s respiratory health. f. What type of igneous rock would be produced from a volcanic eruption here? Extrusive Rock.

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