Lava dome

representation of the lower Columbia River that was published in 1798. Between 1831 to 1857 Mt. St. Helens was violently active and many settlers and local Indians in the area watched the steep-sided and symmetrical cone erupt explosively spewing layers of lava flows, ash, mud, steam, and other volcanic debris around the mountainous tranquil landscape. After each destructive eruption, the land recovered its natural beauty but was forever altered in its shape and…

Mt. Pinatubo, Philippines: Impacts and Human Actions The stratovolcano Mount Pinatubo began showing signs of erupting on the 15th of July 1991. Through a series of events Mt. Pinatubo erupted and effected the surrounding areas. Throughout this paper will be discussed the impacts, including primary and secondary, along with impacts changed by humans. Mount Pinatubo eruption was the second largest eruption in the 20th century, making it have many impacts not only locally but globally. Mount…