By Dominique Tanner

I think that the hardest geological concepts to grasp are time and scale.       CLICK HERE for a useful infographic that one of my colleagues recently sent me, comparing the scale of familiar everyday objects.

Complex textures in platinum-bearing rocks, only visible with electron microscopy.

In one day, the scale I work on can range from looking at structures on maps (hundreds of kilometres across), to centimetre-scale structures in rocks that fit on my desk, to looking at textures in rocks that might only be tens of microns across (that is <0.1 millimetres). These minute textures are only visible under an electron microscope.