Looking at dunes and other rock formations on both Earth and Mars can tell scientists the environmental conditions that ...

They found patterns in historical geologic events throughout this time period, revealing cyclical clusters of events grouped in pulses of approximately 27.5 million years apart. They point out the ...

Sinkites reveal inverted subsurface structures and may affect carbon storage strategies. Their formation remains under active investigation. Scientists have identified hundreds of massive sand formati ...

To analyze these formations further, scientists are turning to Earth and its wide selection of natural dunes, particularly ...

Amethyst geodes in Uruguay have been found in cooled lava flows, which date from the original breakup of the supercontinent Gondwana around 134 million years ago. However, their formation has ...