Miscanti-1
Basic information
Sample name: Miscanti-1

Reference: L. Nùñez, R. Loyola, I. Cartajena, P. López, B. Santander, A. Maldonado, P. de Souza, and C. Carrasco. 2018. Miscanti-1: Human occupation during the arid Mid-Holocene event in the high-altitude lakes of the Atacama Desert, South America. Quaternary Science Reviews 181:109-122 [ER 3414]
Geography
Country: Bolivia



Coordinate: 23° 44' S, 67° 47' W
Coordinate basis: stated in text

Time interval: Holocene

Max Ma: 0.00743

Min Ma: 0.0073

Age basis: radiocarbon (uncalibrated)

Geography comments: "eastern margin of Miscanti Lake"
the material is from Layer 1, between 5 and 20 cm below the surface
there are uncalibrated 14C dates on charcoal of 7300 +/- 40 and 7430 +/- 30 BP

Environment
Lithology: ash

Taphonomic context: human accumulation

Archaeology: bone tools,hearths,stone tools

Habitat comments: "The sedimentary matrix corresponds mostly to volcanic ash (<0.2 mm) with abundant clasts (0.4–1 mm) representing about 30% of the sample... Layer II is a dark ash deposit down to a depth of 20 cm; charcoal associated with lithic artefacts, lithic debris and skeletal remains were recovered from this layer... The lithic assemblage (n = 304) includes 56 bifacial tools, three unifacial tools on flake and 245 flakes and debris fragments... three fragments of vicuña" suggest "intentional fracture of the bone to obtain marrow or for making artefacts" and "two bone artefacts" suggest retouching
24 fragments "showed evidence of exposure to thermal action" and "the bone assemblage is thought to be associated with a processing and discard area"

Methods
Life forms: rodents,ungulates,birds

Sampling methods: surface

Sample size: 42 specimens

Sampling comments: "On the surface, heavily eroded faunal remains, hearth residues and lithic artefacts were recorded in an area of 80 m2... The archaeological deposit reached a depth of 20 cm (levels 1 to 4) where the sterile base was found (without cultural material)"

Metadata
Sample number: 3799

Contributor: John Alroy

Enterer: John Alroy

Created: 2021-06-10 21:20:49

Modified: 2021-06-10 11:20:49

Abundance distribution
5 species
1 singleton
total count 42
geometric series index: 7.4
Fisher's α: 1.479
geometric series k: 0.4617
Hurlbert's PIE: 0.6376
Shannon's H: 1.2449
Good's u: 0.9762
Each square represents a species. Square sizes are proportional to counts.
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