The magma cools down and solidifies, leaving behind a mound of rock, like Traprain Law. Igneous intrusions can be found all around Scotland, not just in Edinburgh and Lothian. Some other examples ...

There are three main types of rock: igneous rock, metamorphic rock ... Mudstone, shale, and limestone are examples of sedimentary rock likely to contain fossils. As the layers of sediment build up on ...

Much detailed work, especially in the laboratories of German universities, during the three or four decades ... to that of generalisation. An igneous rock has come to be regarded, more constantly ...

shooting up rocks and burning lava—is truly a terrific sight. Volcanoes are exceedingly plentiful on our planet, there being no less than sixty-three principal ones; still, they are confined to ...

The rock was excavated from the Bushveld Igneous Complex in South Africa, an area known for its rich ore deposits. This is the oldest example of ... technique involving three types of imaging ...