These slides have been
provided to AAPG for use by its membership in PowerPoint presentations.
They are provided in a low quality resolution unsuitable for printed matter.
Simply download the image and import it into your document.
Please credit Lee Gerhard and AAPG with the words similar to: "Courtesy
of Lee Gerhard and AAPG."
If you want to use any of this artwork in print you need to contact
Lee Gerhard directly.