The Hadean Eon, Earth's first geological period, remains shrouded in mystery due to scarce rock records. However, Québec's ...

Understanding the geologic time scale and how to organize Earth’s history into a coherent timeline. MS-LS4-1: Analyze and interpret data for patterns in the fossil record that document the existence, ...

Researchers have made a new discovery that changes our understanding of Earth's early geological history, challenging beliefs about how our continents formed and when plate tectonics began.

In total there’s more than 26 different types of rock, spanning Earth’s geological time periods. “Each of the rocks is associated with a time period,” explains Paul. To give you a sense of the length ...

In geology, he noted, an event can be anything from a single raindrop pitting a lump of clay to the Great Oxidation Event that transformed earth’s atmosphere some 2.2 billion years ago.

Though mostly underwater, this geological giant has sparked debate as a possible eighth continent. Just 5% of its surface peeks above sea level, making it one of Earth’s most elusive landforms.

Source: “A 485-million-year history of Earth’s surface temperature”, E.J. Judd et al. Temperatures are averages for geological periods. Shaded area shows values with a 68% probability.

Fossils and their placement within geological strata provide a historical timeline of life on Earth. 4-ESS1-1: Identify evidence from patterns in rock formations and fossils in rock layers to support ...

Early Earth's first crust composition discovery rewrites geological timeline Date: April 2, 2025 Source: Macquarie University Summary: Modern continental rocks carry chemical signatures from the ...

Early Earth's first crust composition discovery rewrites geological timeline Modern continental rocks carry chemical signatures from the very start of our planet’s history, challenging current ...