The first eruption of Nevado Del Ruiz was in 6660 BC and most recently in 1985 in the Arenas Crater. Mustafa Ameen Nevado Del Ruiz volcano Introduction: The volcano is a phenomena that occurs at several kilometers depth of the huge plates that form the Earth’s surface, causing a hole in the crust through which the expulsion of molten lava and ash, and … Read More» 3.1 Nevado del Ruiz 1985—A Worst Case Scenario The most serious volcanic disaster since the eruption of Mt Pélee in 1902 occurred when 23,000 people were killed in a few minutes on November 13, 1985, as the town of Armero in Colombia was destroyed by a lahar (Figure 56.3). People forgot about the destruction and devastation and Armero was built on the same site, growing to a town of 30,000 by 1980. Three major edifices, composed of andesitic and dacitic lavas and andesitic pyroclastics, have been constructed since the beginning of the Pleistocene. the authors and do not necessarily reflect the views of UK Essays. Nevado del Ruiz in 1985, Source: Wikimedia Commons On November 13, 1985, the Nevado del Ruiz — a highly active volcano in Colombia — … The modern cone consists of a broad cluster of lava domes built within the caldera of an older edifice. Nevado del Ruiz is a broad, glacier-covered volcano in central Colombia that covers >200 sq km. The 1985 lahar began when twenty million cubic meters of hot ash and rocks erupted from the vent of the volcano and rained down or flowed across the ice and snow-covered summit. Nevado del Ruiz in 1985, Source: Wikimedia Commons On November 13, 1985, the Nevado del Ruiz — a highly active volcano in Colombia — erupted, melting glaciers and sending torrents of … the authors and do not necessarily reflect the views of UK Essays. In many ways, the eruption did not come as a surprise, wrote Barry Voight, then a geologist at Penn State University, in an analysis of the event. 5:26 Skip to 5 minutes and 26 seconds Lahars caused by the snow melts in the wake of the 1985 Nevado del Ruiz eruption devastated the city of Armero in Colombia, causing the deaths of over 23,000 people. Country Colombia Location Armero, Chinchina, Casablanca, Herveo, Libano, Murillo, Villahermosa Brief Overview of the Disaster The 13th of November 1985, one year after its reactivation, the Nevado del Ruiz volcano erupted. Nevado del Ruiz generated killer mud flows in 1595 shortly after the arrival of Spanish colonists and again in 1845. the authors and do not necessarily reflect the views of UK Essays. On November 13, 1985, the Nevado del Ruiz erupted and produced lahars (high-speed avalanches of mud and water caused by the melting of the volcano’s ice …