Comparative Archaeology Database | Center for Comparative Archaeology | University of Pittsburgh
Mayapan Community Dataset
The data files below provide obsidian flake counts described by size and collection context. Obsidian sources were identified visually by Barbara Escamilla Ojeda.
[Comma delimited UTF-8 format]
[Excel format]
Each line in the CSV file represents a collection unit, either excavation, survey, or surface collection. There are 3240 lines, each with 22 variables separated by commas. The variables are listed in the following order:
| 1 | Sample type |
| 2 | Year |
| 3 | Structure |
| 4 | Pozo (test pit) |
| 5 | Cuadro (grid square) |
| 6 | Surface collection number |
| 7 | Lot |
| 8 | Level |
| 9 | Proximal |
| 10 | Medial |
| 11 | Distal |
| 12 | Whole |
| 13 | Core |
| 14 | Flakes |
| 15 | Chip |
| 16 | Chunk |
| 17 | Total count of flakes |
| 18 | Other flake type, where:
|
| 19 | Length (cm) |
| 20 | Width (cm) |
| 21 | Thickness (cm) |
| 22 | Amount of visible breakage on edges, where:
|
The first line of the CSV file, for example, looks like this:
Test Pit (PEMY),2003,P-114,42,,,2027,6,,1,,,,,,,1,,,1.89,0.38,H
This means that this flake was retrieved from a test pit excavation in 2003 at structure P-114, pozo 42, lot 2027, and level 6. It is a medial flake with a width of 1.89 cm and a thickness of 0.38 cm. It has heavy breakage visible on its edges.