Science 10 1.1 Distribution of Active Volcanoes

 

Lesson 1.1

Distribution of Active Volcanoes

 

Objectives At the end of the lesson, you should be able to:

1

identify the active volcanoes in the Philippines; and

2

determine the location and distribution of the volcanoes.

 

Learn about It!

The Pacic Ring of Fire • A zzon one e wit with hin the Pac Paciic ocean that covers a collection of moving plate edges forming a “ring” of volcanoes that cause earthquakes.

The Pacic Ring of Fire

 

Learn about It!

The Pacic Ring of Fire basin that is • A 40 000-kilometer, horseshoe-shaped basin that associated with oceanic trenches, volcanic arcs, and plate movements. • The Philippines is an archipelago surrounded by subducting plates that provides ideal condition for volcanic formation resulting to highly active seismicity and volcanism in the country.

 

Learn about It!

Volcanic Activities magma rises  rises toward • Buoyant molten rock also known as magma the surface and extruded as lava during a volcanic eruption. • Tectonic activity in the Philippines is one of the most active in the world characterized by a number of volcanic activities.

 

Learn about It!

Active Volcanoes • Active volcanoes are those that erupted within the last 10 000 years. • As of 2008, 008, PHIV PHIVOL OLCS CS listed 23 active volcanoes.. volcanoes Active volcanoes in the Philippines

 

Learn about It!

Active Volcanoes Mayon Volcano • It is the most active volcano in the country located in Albay. • its It isalmost famo famou uperfect s bec becau ause se of cone shape. Mt. Mayon

 

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Active Volcanoes Taal Volcano • It is a volcanic caldera composed of several active volcanic landforms making complex type of it a volcano. Taal Volcano

 

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Active Volcanoes Kanlaon Volcano • It is another active stratovolcano located in Negros Oriental. •  June It Itss llat ates estt 2016 act activ ivit ity yw was as in 18, 20 16 according to PHIVOLCS. Mt. Kanlaon

 

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Active Volcanoes Bulusan Volcano • It is located in the province of Sorsogon • It is a stratovolcano formed caldera.inside a • Its latest activity was in March 2, 2017. Mt. Bulusan

 

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Potentially Active Volcanoes

Potentially active volcanoes Name of Volcano

• Volcanoes that do not have any historical record of any eruption but are considered as morphologically young.

Province

Region

Nearby Ci Cities/Towns

Apo

Davao

XI

Kidapawan, Davao City

Corregidor

Bataan

III

Mariveles

Isarog

Camarines Sur

V

Tigaon, Tinangis, Mayangayanga, Mayangayan ga, Sta. Cruz, Goa, Simra, Laon, Turat, Pinaglabanan, Abucayan, Tagongtong, Buyo

Lapac

Sulu

Malindig (Marlanga)

Marinduque

ARMM IV

Siasi (Brgy. Sibaud) Bagacay, Li Lipata, Dampulan, Tigui, Malibago, Sihi

Mandalagan

Negros

VI

Bacolod City

 

Learn about It!

Inactive Volcanoes years and • Volcanoes have not erupted for at least 10 000 years and are not expected to erupt again in the future. • The morphology of these volcanoes was already modied by weathering and erosion.

 

Key Points

1

2

The Philippines is in a zone within the Pacic ocean that covers a collection of moving plate edges forming a “ring” of volcanoes and earthquakes called Pacic Ring of Fire. As of 2008, PHIVOLCS listed 23 active, 26 potentially active and 281 inactive volcanoes.

 

Check Your Understanding Identify whether it is an active or inactive volcano. Write A for active and IA for inactive. Also identify the region/ province where the volcanoes can be found. 1. Did Didica icass Volc Volcano ano   6. Mt. Bontes 2. Kan Kanlao laon n Volcan Volcano o   7. Mt. Banahaw 3. Cal Calaya ayan n Volcan Volcano o 4. Mt Mt.. B Bul ulus usan an 8. Biliran Mt. Hibok-hibok    9. Volcano 5. Can Canip ipo o Vol Volcan cano o 10. Mt. Burgos

 

Challenge Yourself 

Living near volcanoes is very risky however, there are also some advantages. What benets can you obtain from a volcano?

 

Bibliography Bautista, Maria Leonila P. and Bartolome C. Bautista. “The Philippine historical earthquake catalog: its development, current state and future directions.” Anals of Geophysics, vol. 47 (April/May 2004). Borlaza, Gregorio C. and Carolina Hernandez. “Philippines” Encyclopedia Britannica. Last modied December 13, 2016. https://www.britannica.com/place/Philippines Carlson, Diane H. and Charles C. Plummer. 2009. Physical Geology: Earth Revealed, 8th Edition. New York: McGraw-Hill Companies, Inc. Coenraads, Robert R. 2005. Rocks & Fossils: A Visual Guide. Australia: Weldon Owen Inc. DOST-PHIVOLCS. 2008. “PHIVOLCS Volcano Monitoring”. Accessed April 23, 2017. http://www.phivolcs.dost.gov.ph/index.php?option=com_content&view=article&id=50&Itemid=86 Heeran, Kevin, and John O’Brien. 2010. Earth Materials. UK: Wiley-Blackwell. Marshak, Stephen. 2009. Essentials of Geology 3rd Edition. New York: W.W. Norton& Company.

 

Bibliography MGB (Mines and Geosciences Bureau, Philippines). 2010. Geology of the Philippines, 2ndEdition. MGB, Department of Environment and Natural Resources, Manila Monroe, James S. and Reed Wicander.2012. The Changing Earth: Exploring Geology andEvolution, 6th Edition, International Edition. United States: Brooks Cole Publishing Philippine Institute of Volcanology and Seismology. 2017. “Various Articles”. Accessed April27. http://www.phivolcs.dost.gov.ph Tarbuck, Edward J. and Frederick J. Lutgens. 2015. Earth Science. New Jersey: Pearson Prentice Hall. Yumul Jr., Graciano P., Carla B. Dimalanta, Victor B. Maglambayan and Edanjarlo J. Marquez.“Tectonic Setting of a Composite Terrane: A Review of the Philippine Island Arc System.” 12 Geosciences  Journal 1, (March (March 2008), 7 – 17

 

Photo Credits •

Slide 7: This le, Mayon Volcano by Volcano by Flickr Flickr is  is licensed under CC BY-SA 4.0 4.0 via  via Wikimedia Commons.

•

Gonzalez) is  is licensed under Slide 8: This le, Taal Volcano aerial 2013 by 2013 by The Coee (Mike Gonzalez) CC BY-SA 3.0 3.0 via  via Wikimedia Commons.