Being Earth and the Word, the brick is a goddess: 'To thee, O Goddess, Brick, let us sacrifice with oblation' (Kramrisch 1976:105) Brick construction technology appeared throughout much of mainland Southeast Asia by the mid-first millennium AD, and is associated with the earliest states in the region. Populations in these early states used bricks to construct encircling settlement walls, to erect religious structures for housing Indic deities (Parmentier 1932:187), to create Buddhist caitya or stupa shrines within and around their settlements, and to construct mortuary monuments that contained cremations. Given the large number of brick monuments in India and Southeast Asia, the cultural significance of the monuments themselves and their spread through the region and the difficulties of obtaining absolute ages for the bricks and brick structures using other means, a huge need exists to date bricks directly that were used in these public works.This article focuses on dating bricks used to construct first millennium AD monuments, shrines, and other public works. Several persistent questions concerning the earliest brick technology remain unanswered, including the range of construction uses, the linkage between this technology and other concomitant organizational shifts, and the origins of this particular technology. None of these questions can be answered, however, without a solid grasp of the time-space systematics. The Mekong delta (southern Cambodia and southern Vietnam) is an ideal setting for studying Southeast Asian's early brick technological tradition. Not only was the delta a crucible for social and political complexity during the early to midfirst millennium AD (Hall