Transcript for Video
Figure 5: Silbury Hill Matrix with Allen Temporal relationships made explicit

The matrix diagram, illustrated in Figure 5, is a segment of the fuller matrix diagram produced as an Excel spread sheet file, downloaded from the Silbury Hill excavation archive, which is online at ADS. 

This video clip enables me to show the full matrix diagram in overview, but it is not possible to see much of the detail of the stratigraphic relationships between the individual contexts, when looking at the whole Matrix diagram on screen at this scale.

If we zoom into the Excel diagram, we can see the different phases in the matrix are indicated on the left edge of the diagram by phase numbers highlighted in yellow. And I can scroll down the diagram to the particular segment of the matrix (with slightly more complex stratigraphy) that I used for the annotated illustration shown in Figure 5.

...I cut and pasted that segment of the stratigraphy from the Excel version of the Silbury matrix into a PowerPoint slide ... and added the coloured text annotations to explicitly show examples of where the Allen temporal relationships are implicitly illustrated in the Silbury matrix diagram.

1.	One example of this are the dotted horizontal lines that indicate upper and lower phase boundaries, thus delineating which contexts 'occur during' each phase.

2.	The dotted lines that illustrate the juncture between phases also carry the implication that those phases meet temporally, hence the 'meets in time' annotation.  

3.	The matrix diagram also shows that different strands of the matrix have been correlated to overlap horizontally within the phase to indicate that certain contexts and groups of contexts 'overlap in time' to some degree.