Prison Farm
Basic information
Sample name: Prison Farm
Sample aka: 20IA58

Reference: J. G. Brashler, M. R. Laidler, and T. J. Martin. 1998. The Prison Farm site (20IA58): a Woodland occupation in the Grand basin of Michigan. Midcontinental Journal of Archaeology 23(2):143-197 [ER 3192]
Country: United States
State: Michigan

Coordinate: 42° 59' N, 85° 6' W
Basis of coordinate: based on nearby landmark
Geography comments: "on the grounds of the farm associated with the Ionia State Prison... a 60-acre field... approximately 8 km west of the confluence of the Maple River with the Grand" (coordinate based on Ionia Correctional Facility)
there is a conventional radiocarbon date of 1960 +/- 40 BP on "residue from a sherd"
Climate and habitat
Lithology: siltstone
Taphonomic context: ceramics, human accumulation, settlement
Archaeology: ceramics, stone tools
Habitat comments: "dense silt loam soils"
"a major Middle Woodland occupation" with "several hundred projectile points, hundreds of ceramics" and "ground stone"
presence of structures is possible, but there has been no excavation
Life forms: carnivores, rodents, ungulates, birds, turtles, fishes, clams
Sampling methods: surface
Sample size: 302
Sampling comments: surface collected by the Guernsey family between 1962 and the publication date
Sample: 3501
Contributor: John Alroy
Enterer: John Alroy
Created: 2019-09-08 16:26:35
Modified: 2019-09-09 12:29:26
Abundance distribution
12 species
7 singletons
total count 302
standardised richness: not computable
Fisher's α: 2.498
geometric series k: 0.6218
Hurlbert's PIE: 0.5628
Shannon's H: 1.1608
Good's u: 0.9768