Mount St Helens the day before the 18 May 1980 eruption
Post, north of Mount St. Helens, on the clear Sunday morning of May 18, 1980. Seconds later,
Mount Pinatubo is part of a chain of composite volcanoes along the Luzon arc on the west coast of the island (area map). The arc of volcanoes is due to the subduction of the Manila
The volcano experienced major eruptions approximately 500, 3000, and 5500 years ago.
The events of the 1991 Mount Pinatubo eruption began in July 1990, when a magnitude 7.8 earthquake occurred 100 kilometers (62 miles) northeast of the Pinatubo region, determined to be a result of the reawakening of Mount Pinatubo.
In mid-March 1991, villagers around Mount Pinatubo began feeling earthquakes and vulcanologists began to study the mountain. (Approximately 30,000 people lived on the flanks of the volcano prior to the disaster.) On April 2, small explosions from vents dusted local villages with ash. The first evacuations of 5,000 people were ordered later that month.
Mount Pinatubo - is one of a chain of composite volcanoes that constitute the Luzon volcanic arc. The arc parallels the west coast of Luzon and reflects eastward-dipping subduction along the Manila trench to the west. Mount Pinatubo is among the highest peaks in west-central Luzon. Its former summit, at 1,745 meters elevation, may have been the crest of a lava dome that formed about 500 years ago during the most recent previous major eruptive episode. The volcano's lower flanks, intricately dissected and densely
Included in the exhibit are three photos of the eruption, aftermath scene and devastation byPhilippine Daily Inquirer Photography Consultant, Heraldo Cabrido, which won the grand prize and best in News Photography in the local Catholic Mass Media Awards.
The photo exhibit, commemorating the 21 years since Mount Pinatubo’s eruption also...
Please join StudyMode to read the full document