The water-laid alluvial deposits in which the bones were found were consistent with deposition by the stream that drained through Arlington Canyon — not a disturbed or reworked context, but a primary depositional unit laid down in a specific geological event or sustained by ongoing stream activity.

The depth below the modern surface — 11 meters, or approximately 37 feet — reflected the accumulated sediment of subsequent millennia rather than unusual depth at the time of deposition.

Multiple AMS radiocarbon dates from charcoal, plant material, and rodent bone from the relevant stratum and from adjacent strata produced a coherent chronological sequence.

The stratum containing the human remains dated consistently to the range of 10,000 to 11,500 radiocarbon years BP — the terminal Pleistocene, calibrating to approximately 12,000 to 13,500 calendar years ago.

Strata above it produced dates consistent with an early Holocene age.