Geology and history have much in common. Both seek to understand the past by objective analysis of the traces it has left in the present. Both arose from the application of hand and mind to the study of particular things (outcrops of rock, historical documents). Both now benefit from more technological forms of analysis, as… Continue reading Mexican silver in Tudor England
Category: geochemistry
How to make a rock from scratch
“If you wish to make an apple pie from scratch, you must first invent the universe.” Carl Sagan. I have a handsome piece of rock in my hand. How did it come to be, how was it made? A perfectly acceptable geological answer is that it formed as molten rock cooled slowly underground. But that’s… Continue reading How to make a rock from scratch