tag:blogger.com,1999:blog-8977170023009388252.post6253481059082177389..comments2023-01-05T03:15:36.152-08:00Comments on The Petrographer: Oxygen isotopes and delta notation: Cheat sheet v1David Zakharovhttp://www.blogger.com/profile/02108139172667905376noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-8977170023009388252.post-57256601007961730082019-10-15T12:21:45.176-07:002019-10-15T12:21:45.176-07:00The twitter handle changed to @dvdzkhrv The twitter handle changed to @dvdzkhrv David Zakharovhttps://www.blogger.com/profile/02108139172667905376noreply@blogger.com