16th September 2013, 08:46 AM
kevin wooldridge Wrote:...there is no guarantee that the fill being sampled hasn't been washed in from elsewhere rather than being intrinsic to the ditch...
...so sampling 'ordinary' ditch fills is generally pointless - you don't know where the stuff originated from or how old it is (unless you have a discrete dump of something interesting). Stick to 'closed' contexts like (most) pits etc. Always think through the formation process before fetching the sample tubs