Congratulation from the INQUA president

The president of INQUA (International Union for Quaternary Research), Professor Allan Ashworth, sent a letter of congratulation to ICS and IUGS addressed to Qiuming Cheng on July 23, for the subdivision of the Holocene into the the Greenlandian, Northgrippian and Meghalayan stages/ages, and their respective subseries/subepochs.