This study kind of puts the Kibosh on the long held view that flint/chert was not available to much of the volcanic South Pacific.
file:///C:/Users/Tim/Downloads/Ward%20&%20Smith%201974%20Mankind%209%20[2].pdf
Copy and paste what is above might work, if not use the link below.
https://www.researchgate.net/publica...STIGATION_1974