I was an archaeologist for 35 years and worked in New Mexico for 20 years. The Oregon environmental setting mentioned is similar to desert, aeolian settings on which I worked in NM. I have personally documented wind mixed matricies of artifact materials of different temporalities. We also had success in obtaining blood hemoglobin samples from stone tools that were exposed on the surface in dunal, aeolian situations.
Winds in that part of Oregan as well as in the desert Southwest typically blow 35 to 50 mph from early Spring to early summer. Part of my research methodology questioned whether blood hemoglobin would remain on stone artifacts after centuries of sand blasting. I was surprised that it did! As far as I know, I was the first to use blood hemoglobin analysis in New Mexico.
Thanks Nucluside!