[Aztlan] YD impacts appear to have ranged to South America

[E.P. Grondine]

Hi - 

It appears thta YD impactites have been found in Venezuela now:

A new paper about the Younger Dryas Impact Hypothesis has
appeared in the journal Geomorphlogy. It is:

Mahaney, W. C., V. Kalm, D. H. Krinsley, P. Tricart, S. Schwartz, J. Dohm, 
K. J. Kim, B. Kapran, M. W. Milner, R. Beukens, S. Boccia, R. G. V. 
Hancock, K. M. Hart, and B. Kelleher, 2010, Evidence from the 
northwestern Venezuelan Andes for extraterrestrial impact: The 
black mat enigma. Geomorphology. vol. 116, no. 1-2, pp. 48-57.

http://dx.doi.org/10.1016/j.geomorph.2009.10.007

If this holds, then the peoples in meso-america must certainly have felt direct effects as well. If you are working on paleo sites in the region, strata may show up in your excavations.

E.P. Grondine
Man and Impact in the Americas