GeoLog

South America

Imaggeo on Mondays: Journey to Bolivia’s Laguna Negra

Olivia Trani November 25, 2019

Laguna Negra, Salar de Uyuni, Bolivia. Credit: Katleen Wils (distributed via imaggeo.egu.eu).

This week’s featured photo showcases one of the most geologically diverse landscapes of South America: the Altiplano, the high plateau of the Andes. This plateau covers roughly 200,000 square kilometres in central South America, stretching from southern Peru to northern Argentina. The high-elevation plain sits between the eastern and western chains of the Central Andes and is home to a myriad of n ...[Read More]

Geosciences Column: How erupting African volcanoes impact the Amazon’s atmosphere

Olivia Trani July 12, 2019

An aerial view of the towering volcanic peak of Mt. Nyiragongo. Research suggests that its emissions can reach as far as South America, impacting the atmosphere of the Amazon Basin. (Credit: MONUSCO/Neil Wetmore via Wikimedia Commons)

When volcanoes erupt, they can release into the atmosphere a number of different gases initially stored in their magma, such as carbon dioxide, hydrogen sulfide, and sulfur dioxide. These kinds of gases can have a big influence on Earth’s atmosphere, even at distances hundreds to thousands of kilometres away. A team of researchers have found evidence that sulfur emissions from volcanic eruptions i ...[Read More]