Llwytho...
Impact of pre-Columbian “geoglyph” builders on Amazonian forests
Over 450 pre-Columbian (pre-AD 1492) geometric ditched enclosures (“geoglyphs”) occupy ∼13,000 km(2) of Acre state, Brazil, representing a key discovery of Amazonian archaeology. These huge earthworks were concealed for centuries under terra firme (upland interfluvial) rainforest, directly challengi...
Wedi'i Gadw mewn:
| Cyhoeddwyd yn: | Proc Natl Acad Sci U S A |
|---|---|
| Prif Awduron: | , , , , , , , , , |
| Fformat: | Artigo |
| Iaith: | Inglês |
| Cyhoeddwyd: |
National Academy of Sciences
2017
|
| Pynciau: | |
| Mynediad Ar-lein: | https://ncbi.nlm.nih.gov/pmc/articles/PMC5338430/ https://ncbi.nlm.nih.gov/pubmed/28167791 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1073/pnas.1614359114 |
| Tagiau: |
Ychwanegu Tag
Dim Tagiau, Byddwch y cyntaf i dagio'r cofnod hwn!
|