An activity to work out what happened (in the correct sequence) on the bed of the Cambrian sea 520 million years ago. Suitable for teachers and college (A Level) students.
Click on the image to download the pdf of the Cambrian detective story
This drawing represents the upper surface of a slab of shale which was overlain by sandstone.
For this exercise, you are given some clues, but need to work out all that happened in the correct sequence, on the bed of the Cambrian sea 520 million years ago.
