Massive asteroid impact 6.3 million years ago left giant glass field in Brazil

March 1, 2026

Scientists have discovered Brazil's first tektite field, formed by a massive asteroid impact approximately 6.3 million years ago. This field, known as 'geraisites' and located in Minas Gerais, contains glassy fragments that span over 900 kilometers, marking a significant ancient impact event in South America.

A newly discovered field of glassy “geraisites” in Brazil reveals that a powerful asteroid struck the region around 6.3 million years ago. Spanning more than 900 kilometers, the find ranks among the world’s major tektite fields — even though the crater is still missing

Credit: Shutterstock

Key Highlights

Discovery of Brazil's first tektite field.
Created by an asteroid impact 6.3 million years ago.
Named 'geraisites' after the Minas Gerais region.
Field of glass fragments extends over 900 kilometers.
Represents one of South America's most significant ancient impact events.

Sources

Massive asteroid impact 6.3 million years ago left giant glass field in Brazil

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Massive asteroid impact 6.3 million years ago left giant glass field in Brazil

Key Highlights

Sources

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