PROTEIN AND ORGANIC RESIDUE (FTIR) ANALYSIS OF A PESTLE, AND PROTEIN RESIDUE ANALYSIS OF MORTAR CUPS FROM SITE CA-TUO-4818, YOSEMITE NATIONAL PARK, CALIFORNIA

A granite pestle and an associated soil control sample recovered from Feature 2, an exposed, low-lying granite bedrock milling station at Site CA-TUO-4818 in Yosemite National Park, California, were submitted for protein and organic residue analysis. The pestle was tested for organic residues using Fourier Transform Infrared Spectroscopy (FTIR), and for protein residue using cross-over immunoelectrophoresis (CIEP). Following completion of this analysis, three additional residue samples and corresponding soil control samples from bedrock milling station mortar cups were submitted for protein residue analysis.