There's a billion-year gap in Earth's geological history. A new study seeks to explain the mystery.

Much of our understanding of Earth's past is derived from stratigraphic records exposed in rock outcrops or recovered from drilled cores. These records span immense time intervals, from thousands to ...

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.

A potential new mineral on Mars forms when iron sulfates are heated above 100°C. Data from Valles Marineris regions suggest ...

Most major geological events in Earth's recent history have clustered in 27.5-million-year intervals — a pattern that ...

The Great Unconformity is a major gap in Earth's geologic record. The missing layer between Precambrian and Cambrian rocks ...

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.

Houchin and his colleagues studied dozens of zircon crystals from the Jack Hills in Western Australia. These are the oldest ...

Recent advances in AI are helping scientists unlock new secrets about the Moon’s far ...

In the 20th century, scientists began to suspect Earth was a lot older than we thought. It was our old friends/deadly foes, uranium and lead, that provided the first evidence.

Scientists warn that the plate beneath Gibraltar arc will begin to shift toward the Atlantic within 20 million years.