are overlain by a type of rock called carbonate, which indicates intense weathering. For six summers, Harvard geologist Paul Hoffman labored in the African heat to study these sequences ...

The Perseverance rover has found some intriguing samples on the red planet. Here's what they might reveal about the origins ...

Because the 'micro-burrows' are filled with a fine powder of pure calcium carbonate, the team strongly suspects they were not ...

Unusual structures of unknown origin discovered in desert rocks have been documented in a new study. In the desert regions of ...

"We look at the structure of the rocks to find out how continents came together to form the supercontinent Gondwana 500 to 600 million years ago," explained Passchier. At that time, carbonate ...

Tectonics is the study of the structural geology of the Earth and other planetary bodies, and the local and regional processes that created that rock geometry. This includes the movements of the ...

Calcium carbonate dust found in the tunnels is also a common excretion from microbes that live in these types of rocks. However, no fossilized organisms have yet been found—just evidence of ...