• Age Correction Spreadsheet for the Effects of Paleotemperature Changes (From IAOS Bulletin No. 52). This spreadsheet corrects an OHD age for the effects of paleotemperature changes. It is only needed for ages greater than about 13,000 years. The calibration scale extends back to 200Kya.

• OHD Calculation Worksheet. Includes both simple as well as turbation calculations.

• Obsidian Related Publications (Updated 6/12/2019)

This spreadsheet of over 5,000 obsidian-related literature references was contributed by Chris Lloyd, a consulting exploration geologist currently living just outside of Guadalajara, Jalisco, Mexico. Chris specializes in gold and silver geology and admits that he's also developed a certain obsession with obsidian. He moved from Canada to Mexico in 1994 and, after I asked him for a little background information, mentioned that his house is anchored to an outcrop of obsidian associated with the Primavera Caldera. Chris will be updating this listing from time to time and would very much welcome any contributions or comments concerning citations that are not yet in the spreadsheet. To see an online version of this list, see below.

• Zotero Online Database of Obsidian Related Publications

In a clever adaptation of Chris Lloyd's obsidian literature spreadsheet (see above), Nicholas Tripcevich (Archaeological Research Facility - UCB) has ported the data over to Zotero, an easy-to-use online tool for organizing and searching research citations.