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The compass only tilts forward and back so it must be rotated during this process; as a result, it is able to determine true inclination of the core sample.Because the bubble is centred, the compass is level in both x and y.

This is used to orientate the sample more accurately than using a magnetic compass with it’s associated errors (the compass needle can be deflected by the magnetic material within the rock when trying to measure).This was not easy because much had changed in the When collecting samples, there are a number of considerations; 1) Because the remanence is only locked in to the rock as the rock cools below a certain temperature, the rock sample must also be kept cool whilst drilling it from the rock.The image below shows Phil Mc Causland drilling a sample from an outcrop whilst Daniele Thallner pumps water through the drill and out of the end to keep the sample cool.As part of the DEEP project, the goal of my project is to gain a better understanding of Earth’s interior by analysing the ancient field strength while dealing with conflicting data of palaeofield directions in the Ediacaran period.After one or two detours due to slight inaccuracies of our group’s two navigators (who will remain anonymous at this point), we finally reached University of Toronto’s palaeomagnetism lab in the outskirts of the University’s campus.

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