Long-distance trade of obsidian in the Maya realm has been documented as early as the Middle Formative Period (1000-400 BC). Obsidian exchange continued in each succeeding period, through the Post-Classic (AD 900-1525), varying in both intensity and source of origin. It is the temporal variations in source utilisation that have formed the basis for obsidian research in the Maya area. By focusing on the origin of the obsidian and the temporal context these studies provide valuable information in documenting shifts in source utilisation. This work focuses on the distribution and consumption...