For the geo-geeks out there, I have finished my geologic timescale brush; now better and more accurate than the previous one.

Download the Illustrator file here

Download .EPS file here

Included is a swatch folder with all the colours as per the instructions of the International Commission on Stratigraphy:

You are welcome to use this in any way you like, the only thing I wish for is that you let me know/show me the context. You can reach me on twitter; @benteh

Since it is a brush, it can take on any shape, and it can be scaled to be as big as a house.

The text needed have to be added manually. It is possible to incorporate it automatically in the brush, but this might not be so sustainable. This is an ongoing project of mine; creating a geologic clock from the formation of the earth to today. When finished, this will have key fossils from each period, maybe a number of millions/billions of years plotted around the clock. Other possibilities is to add ice-ages etc.

It can of course also be divided and dissected to show only the parts needed. Since it is a brush, it can also take any shape.

Detail of the fan-shape: