Encyclopedic Dictionary of Applied Geophysics, fourth edition

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Encyclopedic Dictionary of Applied Geophysics
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Series Investigations in Geophysics, No. 13
Title Encyclopedic Dictionary of Applied Geophysics
Author Robert Sheriff
DOI http://dx.doi.org/10.1190/1.9781560802969
ISBN ISBN 978-1-56080-118-4
Store SEG Online Store

The fourth edition of SEG's bestseller is now available in its entirety on the wiki - for free. This is a valuable, comprehensive reference that is a must for every geophysicist, geologist, explorationist, engineer, energy adviser, economist, and student involved in the field.


Translation projects[edit]

In February 2017, a group of volunteers started translating Robert Sheriff's Encyclopedic Dictionary into Spanish. As of 23 August 2017, fifty contributors have translated 3,226 words (48 percent complete) and made 21,355 edits.

Since the initial language project, teams of volunteers have started translating the Dictionary into Mandarin, Arabic, and Russian. When you visit a Dictionary article - for example mud log - look at the top for available translations. If you would like to be involved in any of the translation projects, contact Andrew ageary‐at‐seg.org.

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Common editing tasks[edit]

Since Robert Sheriff conceptualized a written book when completing his work, there are two common issues that detract from the full online experience. These issues arise in:

  1. references
  2. figures


Just like technical papers, wikis need citations and references if they are to be useful and trusted. Frequently, references will appear in the articles without proper citations. This is the full list of references that appear in the Dictionary. Use this page to locate the missing full citations in the Dictionary articles.

The Q article has been fixed. Note: References can be difficult to find since there is not a category listing all of the pages that need references. Many of the articles, including Dictionary figures, will need to have references added.


As with references, most of the figures do not appear in their entirely on the article. All of the figures for Sheriff’s Dictionary have captions. We will retain the captions when adding the figures to the Dictionary entries.

It is possible that these figures will have the same issues as the dictionary entries: improper math and no references. I encourage you to address these issues in the figures as you see them.

The Q article shows one way to integrate them. Some articles have lots of figures. Note: Figures can be difficult to find since there is not a category listing all of the pages that need figures included.