Denisova Cave Stratigraphy & Archaic Admixture Simulator

1. Stratigraphic Excavator

EXCAVATION DEPTH: 4.20 m CHRONO-HORIZON: 51.6 - 76.2 kya

Selected Stratum

Layer 11 (East Chamber)

Sediment Microfacies

Loam with limestone debris

Climate (MIS)

MIS 3 / MIS 4 (Interstadial)

Hominin Horizon

Denisovan + Neanderthal

Stratified Fossils & Artifacts

2. Fossil Lab & Genomic Admixture

denisova_3_finger

Denisova 3 (Juvenile Distal Pinky Phalanx)

Excavated from East Chamber Layer 11. Yielded the first high-coverage (30x) Denisovan nuclear genome in 2010 by Svante Pääbo and colleagues.

mtDNA Divergence: 1.04 Mya Coverage: 30.4x Nuclear Sex: Female (XX)

Archaic Introgression Pathways

EPAS1 (Hypoxia pathway adaptive introgression in Tibetan populations)

A 5-SNP Denisovan-derived haplotype on Chromosome 2 prevents excessive hemoglobin production and high-altitude hypoxia polycythemia in Tibetans and Sherpas.

Global Population Archaic Fractions

Oceanian / Papuan 2.4% Nea • 4.8% Den

East Asian (Han / Tibetan) 2.1% Nea • 0.2% Den

European (CEU) 1.9% Nea • 0.0% Den

Field Dossier Diagnostic Log

// Scientific provenance logs ready...