El Scorchio

Anyone new to this blog or geophysics in archaeology is recommended to read the material on the “Geophysical survey in archaeology” page.

It was hot today. Not a cloud in the sky in the morning (Figure 1).

Figure 1: the GPR crew setting-up under a cloudless sky.

We did, however, manage to complete our target of two 40x40m GPR grids and seven mag grids, so a good day’s work all round.  I also put in enough grid pegs to keep people busy for the next two days.

The mag team of Jim West, Graham Spurway and Rhian Morgan continued working in the “Fosse Field” outside of the town walls (Figure 2).

Figure 2: Rhian Morgan (CVAHS) operates the magnetometer.

The results are encouraging.  As well as more of the very faint features we detected yesterday, we have some much clearer linear features, almost certainly ditches, as well as a couple of other more amorphous ones which may well be pits (Figure 3).

Figure 3: Magnetometry results after day 2.

The linear features look like field boundaries but they do not bear any relationship to the current boundaries. Indeed, just to the north of the area we have surveyed, past the track which can be seen in the image, is a large lynchet caused by many years of ploughing.  We would appear to be seeing something pre-dating the laying out of the park at Gorhambury.

The GPR team of Mike Smith, Dave Minty, Nigel Harper-Scott and John Ridge, having filled-in the annoying gap yesterday, have moved to the north end of the site near where we park.  Slices 3 to 8 are shown in Figure 4.

Figure 4: GPR time slices 3 to 8.

Unlike yesterday, we didn’t have quite such clear buildings.  There does, however, seem to be a rather knocked-around one in the western half of the block.  The mag isn’t all that clear in this area ether apart from a ditch running NNW–SSE.  The next two figures show two slices in context.

Figure 5: Time slice 5.

Figure 6: Time slice 6.

With the eye of faith one can just about see the ditch in the GPR data, but the large areas of high reflections are hard to interpret clearly.

By the end of the day, we did start getting some clouds.

Figure 7: Clouds and stripy GPR.

I’m lovin’ those stripes in the brown grass!

 

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