Images

The Archaeologist’s Guide To Good Practice (AG2GP) project believes in making our resources Open and Accessible, where possible. As such we are releasing all of our images under Creative Commons CC BY 4.0 licenses. Please feel free to use any of these images that were created for the project under that license.

Redrawn version of original sketch plan illustrating grouping and subgrouping within enclosures on the A14 road scheme infrastructure project.
Sub-group matrix showing the approach to subgrouping and preliminary phasing
Sketch plan and sections showing an approach to subgrouping
Simplified example of a Matrix diagram showing conventions for Top of matrix (+) and Bottom of the matrix (eg. NFE – No Further Excavation)
Stylized section drawing showing layers in profile with stratigraphic units numbered. Including a pit and postholes of different phases.
Example section drawing to demonstrate stratigraphic relationships (derived from Historic England Field Recording Manual)
Example of a simple stratigraphic sequence (derived from the example section drawing opposite), as visualised using a Harris matrix diagram
Grouping & Subgrouping Decision Flow Diagram
Overview diagram of steps and flow of information in a typical Stratigraphic analysis process.
Animation showing interpretive grouping and phasing on matrix diagram of example sequence shown in illustrative section. Phasing on matrix is shown by highlighting of associated contexts on the section.