When you are being trained as a palaeontologist or a geologist, you are told fossils only occur in sedimentary rocks,” ...

There are three main types of rock — igneous, sedimentary and metamorphic — with varying mineral mixes depending on where and how the rock came to be. Igneous rocks — which form as magma ...

A rock containing many smaller round stones could indicate that there was once a large amount of liquid water on the Red Planet.

The basalt which makes up the Giant’s causeway is an igneous rock. Sedimentary rocks are formed by small rock pieces which are transported by rivers and laid down in layers. Chalk is a ...

Southwestern Ohio's limestone (a sedimentary rock) is saturated with life — life from about 450 million years ago, that is. Our local limestone layers reflect times of relative prosperity for the wide ...

They are very tiny, but they are a key source of information when it comes to Earth's evolutionary history: pollen grains are ...

A report by the U.S. Geological Survey said significant reserves of oil and natural gas could be lying thousands of feet ...