In some parts of the world, more than a billion years of geologic history is missing. Now a team of scientists think they ...

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.

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. A study ...

Earth's 4.5 billion year geological history is full of death and rebirth, mass extinctions and explosions of biodiversity, with different periods often marked by cataclysmic changes that radically ...

Boulder, Colo., USA: Marine and coastal geoscience play a critical role in understanding ancient and modern geological history, offshore and coastal hazards, and climate change. Deep-water ...

The discovery could usher in a wave of investigations into the evolution of Earth’s mantle, a layer of material about 1,800 miles deep that extends from just beneath the planet’s thin crust to its ...

A thin slice of the ancient rocks collected from Gakkel Ridge near the North Pole, photographed under a microscope and seen under cross-polarized light. Field width ~ 14mm. Credit: E. Cottrell, ...

Geologic setting -- Rocks of the Antero Reservoir quadrangle. Precambrian ; Paleozoic (Cambrian ; Ordovician ; Devonian ; Mississippian ; Pennsylvanian-Permian ...

Boulder, Colo., USA: The Geological Society of America (GSA) is pleased to announce the release of the newest book in the award-winning Roadside Geology series, Roadside Geology of Texas, Third ...