Menu Close

Articles on Geology

Displaying 1 - 20 of 286 articles

An artist’s impression of the Earth around 2.7 billion years ago in the Archean Eon. With green iron-rich seas, an orange methane-rich atmosphere and a surface dominated by oceans, the Archean Earth would have been a very different place. (Illustration by Andrey Atuchin)

Where did the Earth’s oxygen come from? New study hints at an unexpected source

Could tectonic processes in the early Earth have contributed to the rise of oxygen?
This is an enhanced satellite image of Western Australia’s Great Sandy Desert. Yellow sand dunes cover the upper right, red splotches indicate burned areas, and other colours show different types of surface geology. USGS/Unsplash

These stunning satellite images look like abstract art – and they reveal much about our planet

The United States Geological Survey has a vast collection of satellite images capturing breathtaking geological features of our planet. As a geologist, I’ve picked eight of the most fascinating.
Salvatore Allegra / AP

How plate tectonics, mountains and deep-sea sediments have maintained Earth’s ‘Goldilocks’ climate

New modelling shows how tectonic plate movements, carbon-rich deep-sea sediment, and mountain weathering have regulated Earth’s climate.
A panorama stitched together from about 100 individual Curiosity images. The ‘door’ is circled, and is tiny and hard to see at this scale. NASA/JPL-Caltech/MSSS

A ‘doorway’ on Mars? How we see things in space that aren’t there

We should not be surprised that some of the innumerable rocks on Mars have weird shapes, because many have been sand-blasted by wind erosion for billions of years.

Top contributors

More