Remarks
Geochron is a project of EarthChem and EARTHTIME. Database development is a collaborative effort of EarthChem (Doug Walker, University of Kansas), CIRDLES (Jim Bowring, College of Charleston), EARTHTIME (Sam Bowring, MIT), and the Arizona LaserChron Center (George Gehrels, University of Arizona). Funding for this initiative is provided by the National Science Foundation (EAR-0929746) and the ExxonMobil
Corporation.
There is a collaboration with the "Working-Group for Geochronology by LA-ICPMS" to provide sets of zircon standards that LA-ICPMS and SIMS labs can use for technique development and interlab calibration tests