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South America

Rocky high mountain landscape under a clear blue sky, with vegetation and a small lake in the foreground.
Posted inScience Updates

A Puzzle Mat for Assembling Colombia’s Geologic History

by Carolina Ortiz-Guerrero 11 April 202210 April 2023

A new database compiles all the available pieces of information about Colombia’s geochronology, offering scientists a consistent framework in which to view and study the data in a broader context.

The Amazon Tall Tower Observatory is a joint Brazilian-German research station with a 325-meter tower making environmental observations in the Amazon.
Posted inFeatures

Africa’s Earth, Wind, and Fire Keep the Amazon Green

by J. Besl 23 March 202225 March 2022

Jet streams sprinkle North African dust over the Amazon, providing the rain forest with much needed nutrients. Changing wind patterns and increasing smoke may shift the system.

A view across the Amazon rain forest
Posted inAGU News

Dust in the Wind, Dirt Under Our Feet, and Dunes of Another World

Heather Goss, AGU Publisher by Heather Goss 23 March 202223 June 2022

In our April issue of Eos, we follow researchers who get to the root of the Amazon basin’s rich landscape.

Lofted dust layers over the Andes mountains
Posted inNews

Iodine-Laden Desert Dust Is Eating at Ozone Pollution

by Jackie Rocheleau 28 February 202228 February 2022

In a happy accident, scientists found a potential solution to an atmospheric chemistry mystery. Their findings could be a missing piece in the iodine cycle and in atmospheric models.

A woman wearing a hat plants seedlings in the foreground of this picture, as a group of men and women do the same farther back.
Posted inNews

Traditional Knowledge Is Essential to Sustainability in the Amazon

by Meghie Rodrigues 12 November 202116 December 2022

At COP26, the Science Panel for the Amazon is emphasizing the need for Indigenous and Local Knowledge to inform scientific and policy recommendations.

Project design of the Antarctic station Comandante Ferraz projected by Estúdio 41.
Posted inNews

Brazil’s Antarctic Station Rises from the Ashes

by Meghie Rodrigues 2 August 20216 December 2021

The sophisticated new research station will allow for better science on the icy continent.

Diagram showing high velocity slabs in the lower mantle beneath South America's present position and profile showing the westward motion of South America.
Posted inEditors' Highlights

Previous Intra-oceanic Subduction Found Beneath South America?

by M. Assumpção 9 July 202127 January 2023

Newly mapped fast velocity slabs in the lower mantle may be remnants of westward dipping intra-oceanic subduction, before flipping to the present eastward subduction beneath South America at 85 Ma.

Sunrise over an unpaved road near Apulo, Colombia
Posted inNews

The Rocky Roads of Colombian Paleontology

by Camilo Garzón and Santiago Flórez 7 May 20218 November 2021

Colombia has a wealth of fossils, and geologists are leading the charge to both collect data and share ancient history with local communities.

Map showing moisture contribution anomalies during the 2005 drought quantified as the deviation from long-term average.
Posted inEditors' Highlights

Upwind Forest Buffers Rondonia Cropland Against Regional Drought

by Guiling Wang 27 April 20216 December 2021

During severe Amazonia droughts when oceanic supply of moisture failed, the magnitude of rainfall reduction over Rondonia was moderated by enhanced moisture supply from upwind forests.

A patch of grass in the middle of rocks
Posted inNews

Vicuña Poop Nourishes “Dung Gardens” High in the Andes

Katherine Kornei, Science Writer by Katherine Kornei 18 March 20214 October 2021

The excrement delivers nutrients like phosphorus and nitrogen, kick-starting islands of vegetation at the edge of the cryosphere.

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