The Great Unconformity is a major gap in Earth's geologic record. The missing layer between Precambrian and Cambrian rocks represents a gap of around a billion years of history. Among much debate ...

In 1869, John Wesley Powell was studying layers of rock in the Grand Canyon when he noticed an unconformity in the layers. Around a billion years were missing, and the problem turned out to be global.

A layer of rock just 520 million years old sat directly on top of ancient rock dating back 1.4 to 1.8 billion years.

Before trees existed, Earth’s land was dominated by Prototaxites — towering structures up to 8 meters tall, likely giant fungi as visualised here using AI Life always finds a way. The research ...

Over the course of a couple days in September 2005—amidst a flurry of volcanic eruptions and hundreds of earthquakes—the ground in northeast Ethiopia split wide open. For millions of years, a bubble ...