Shale Shaker Vol 72, No 4 July-August 2021

father and son John Nichols and J. Larry Nichols. Nearing the end of these two de- cades, the Natural Gas Policy Act took ef- fect, which deregulated natural gas prices and allowed them to increase with de- mand (Boyd, 2006). This helped to further incentivize Oklahoma drillers to search the deep Anadarko for gas. This was espe- cially the case when Robert A. Hefner III began an extensive drilling program in the area around Elk City (Franks). The papers in this issue go together well, the first, “An Intact Thirty Four foot Long Petrified Log in the Woodford Shale, Oklahoma: AQuestion of Preserving Geo- logical Heritage” by Andrew Cullen, Da- vid Hull and Molly Turko discusses pos- sibly the largest found silicified log found in the Woodford Shale in Oklahoma. This highlights the excitement of geologic field work and trying to unravel how we could get such a large single piece out so far in a deep depositional environment. The second article is a vintage article from the May 1963 issue of the Shale Shaker, titled “A Geological History of Oklahoma’s Vegetation” by L.R. Wilson. I thought this would pair well with the modern article as it discusses in depth all the vegetation found in the Oklahoma fossil record, in- cluding the Callixylon log discussed in Cullen et al. I hope you all enjoy them! Mike Kumbalek

Figure 1 - Shale Shaker Vol 19, No 8 Cover featuring at the time the deepest producing well in Oklahoma and the second deepest well in the world.

References Boyd, D., 2006, Milestones in the Oklahoma Oil and Gas Industry (1859-2006), accessed April 10, 2021, http://ogs.ou.edu/docs/ information/OGS-milestones_oklahoma_oil_gas_industry.pdf Franks, K., Petroleum Industry, Oklahoma Historical Society, accessed September 3rd, 2021), https://www.okhistory.org/publications/ enc/entry.php?entryname=PETROLEUM%20INDUSTRY Wikipedia.com, 2021, accessed September 23, 2021, https://en.wikipedia.org/w/index.php?title=Kola_Superdeep_ Borehole&oldid=1044426960

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