Active and Inactive Volcanoes PDF

Welcome to the World of Volcanoes  Learning Objectives At the end of this lesson, the learner should be able to do the following: Differentiate between volcanic architectures and why they form. Describe the different parts of Volcanoes Compare inactive from active volcanoes. Explain th...

Welcome to the World of Volcanoes  Learning Objectives At the end of this lesson, the learner should be able to do the following: Differentiate between volcanic architectures and why they form. Describe the different parts of Volcanoes Compare inactive from active volcanoes. Explain the different types of volcanic eruption.  Learn about It Types of Volcanoes According to Activity Active Volcano Inactive Volcano Potentially active/dormant Mt. Kilauea in Hawaii is the most active volcano in the world.  Learn about It Types of Volcanoes According to Activity Active Volcanoes These have eruptive histories or there has been a recorded eruption in historical times. Examples: Mt. Kilauea (Hawaii), Mt. Mayon (Ph), Mt. Mayon is the most active Mt. Taal (Ph), Mt. Etna volcano in the Philippines. (Italy), Mt. St. Helens (WA),  Learn about It Types of Volcanoes According to Activity Active Volcanoes There are currently 23 active volcanoes being monitored by PHIVOLCS. Dateable erupted materials confirm that they erupted within the last 10,000 years. Mt. Vesuvius (Italy, 79 AD) is considered the most dangerous eruption in history.  Learn about It Types of Volcanoes According to Activity Active Volcanoes Four most active volcanoes in the Philippines: ○ Mt. Mayon- 52 eruptions ○ Mt. Taal- 34 eruptions ○ Mt. Kanlaon- 30 eruptions A view of Mt. Taal ○ Mt. Bulusan- 18  Learn about It Types of Volcanoes According to Activity Active Volcanoes Mt. Mayon ○ Its last eruption was in 2018, with 52 historical eruptions. ○ The famous “perfect cone” signifies Mayon’s structure Mt. Mayon, Albay as a stratovolcano. Types of Volcanoes According to Activity Learn about It  Learn about It Types of Volcanoes According to Activity Active Volcanoes Mt. Taal ○ Its last eruption was in 2020. Crater of Mt. Taal  Learn about It Types of Volcanoes According to Activity Active Volcanoes Mt. Kanlaon ○ Its last eruption was in 2016. Mt. Kanlaon, Negros Occidental  Learn about It Types of Volcanoes According to Activity Active Volcanoes Mt. Bulusan ○ Its last eruption was in 2017, with historical 18 eruptions. Mt. Bulusan, Sorsogon  Learn about It Types of Volcanoes According to Activity Inactive Volcanoes These have no eruptive histories, are heavily weathered, and will never erupt again. Examples: Mt. Arayat (Pampanga) and Seven Lakes of San Pablo (Laguna) Mt. Arayat, Pampanga  Learn about It Types of Volcanoes According to Activity Inactive Volcanoes PHIVOLCS lists 335 inactive volcanoes, with several being unnamed peaks.  Learn about It Types of Volcanoes According to Activity Potentially Active Volcanoes (dormant volcanoes) These have no eruptive histories and no recent dateable materials and, in some instances, present signs of activity or remnant heat. PHIVOLCS lists 26 potentially active volcanoes. Examples: Mt. Apo (Cotabato), Mt. Talinis (Negros Island), and Mt. Isarog (Camarines Sur)  Key Points PHIVOLCS uses a classification system to track the activity of Philippine volcanoes. Active volcanoes have eruptive histories; there has been a recorded eruption in historical times. Potentially active volcanoes have no eruptive histories and no recent dateable materials but are morphologically recent. Inactive volcanoes have no eruptive histories, are heavily weathered, and will never erupt again. The Philippines is situated in the Ring of Fire, meaning that there is a