Core Drilling

Today we had a field trip to Antony Marsh in Cornwall to take sediment cores to investigate sub-surface concentrations of heavy metals. Antony Marsh is a salt marsh, which is a vegetated area that is regularly flooded by the tide. Whilst we were there, we took four cores of the following depths:
Core 1, Drill 1 = 0-100cm

Core 1, Drill 2 = 75-175cm
Core 2, Drill 1 = 0-69cm

Core 2, Drill 2 = 50-150cm
We then calculated the height at which we took the cores by comparing it to a known height (unfortunately our lecturer couldn't remember that height, so we'll find that out soon!). We calculated that the difference between the height of our cores and the known height is 9.7cm, so hopefully soon we'll have some proper values!

Measuring the relative heights