Matanchén Complex: New Radiocarbon Dates on Early Coastal Adaptation in West Mexico

Science  17 Mar 1972:
Vol. 175, Issue 4027, pp. 1242-1243
DOI: 10.1126/science.175.4027.1242


Samples of marine shell from archeological context on the coast of Nayarit, Mexico, have given radiocarbon determinations of 1810 ± 80 B.C., 2000 ± 100 B.C., and 2100 ± 100 B.C. Even with maximum correction for upwelling these are the earliest dates for coastal occupation in West Mexico north of Acapulco, Guerrero. Analysis of the midden contents has provided new insights regarding early coastal adaptation.