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Earthquake Report for 2005 Article from Oklahoma Geology Notes discusses number of earthquakes in Oklahoma, instrumentation at the Leonard Observatory, and other facts about earthquakes in Oklahoma Oklahoma Earthquakes 2005 Earthquakes Felt Near Oklahoma City Fifteen small earthquakes occurred in the Luther, Harrah, and Jones, Oklahoma, areas east of Oklahoma City areas from Tuesday, October 21 to Tuesday, October 28. The largest earthquake, magnitude 3.1, occurred at 2:05 pm on October 21. Residents reported the felt earthquakes sounded like a sonic boom or distant thunder, and a few people were awakened by the early morning quakes. No one has reported any significant damage. No cause for the earthquakes has been established, although this phenomena does occur in Oklahoma. The Oklahoma Geological Survey locates some 50 small earthquakes each year around the state, with very few reported being felt.The events as of 4 p.m. Thursday, October 28, 2008, include: 15 total so far. Oct. 21 2008 05:33:31 or 12:33:31 AM CT 05:55:40 or 12:55:40 AM CT 06:02:17 or 1:02:17 AM CT 06:43:45 or 1:43:45 AM CT 09:29:35 or 4:29:35 AM CT 14:12:15 or 9:12:15 AM CT 17:41:20 or 12:41:20 PM CT 19:05:39 or 2:05:39 PM CT Oct 23 2008 17:45 or 12:45 PM CT Oct 24 2008 23:47 or 6:47 PM CT Oct 25 2008 21:24:30 or 4:24:30 PM CT Oct 28 2008 09:07:11 or 4:07:11 AM CT 11:33:40 or 6:33:40 AM CT Oct 30 2008 16:25:00 or 11:25 AM CT No cause for the earthquakes has been established. The Oklahoma Geological Survey records some 50 small earthquakes each year, with very few reported being felt. If you felt any of these earthquakes the OGS would appreciate getting your report. You can go to the Survey's earthquake Web site at: or simply mail your report to: Earthquake Please send the time, location, what you were doing, what you heard and felt, and any damage accounts.
Recent Web Additions Overview of Woodford Gas-Shale Play, 2008 Update (2008 Conference)Thermal Maturity of Woodford Shale (2008 Conference Poster) Oil and Gas Maps Available to Download Free OGS Maps GM 36, 37 and 38, Oklahoma Oil and Gas Fields by Dan Boyd, are now available to download at no charge as pdf files or data files. Download field mapsDrought in Oklahoma and Texas Panhandles Learn more about the drought by checking the links provided. Photos show the dry weather's impact on the land where the top soil has been blown away in some areas exposing the hardpan. The text, graphs, photos, and a movie of the drought's progression clearly demonstrate the forces of climate on the earth's surface.
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OGS Chief Geophysicist James E. Lawson
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October 22, 2008
Oklahoma Gas Shales Conference and Field Trips
Conference topics include Woodford and Caney Shale geology, stratigraphy, electric-log response, source-rock characteristics, reservoir properties, drilling and completion practices, hydrocarbon production, and regional gas-shale projects.
The Woodford Shale (Late Devonian–Early Mississippian) is currently the most important gas-shale play in Oklahoma, so make reservations early to attend what is sure to be a popular conference!More information
Prospect Expo Planned for October 29
OGS Announces Plans Prospect Expo on October 29, in Oklahoma City
More information
Oklahoma Drilling Highlights for 2007
Nine-page article by Dan Boyd examines drilling activity in 2007 for Oklahoma. (Article reprinted by permission of the Oklahoma City Geological Society Shale Shaker.)
Oklahoma Drilling Highlights 2007
OGS Director Search
Applications are being solicited for the position of Director, Oklahoma Geological Survey (OGS). The OGS is located on the University of Oklahoma campus in Norman, Oklahoma, and is under the direction and supervision of the Board of Regents of the University of Oklahoma. Organizationally, the OGS is located within the Mewbourne College of Earth & Energy, which also includes: ConocoPhillips School of Geology & Geophysics, Mewbourne School of Petroleum & Geological Engineering and Sarkeys Energy Center.
The Director of the OGS reports administratively to the Dean, Mewbourne College of Earth & Energy and, depending on qualifications and experience, will hold a faculty position within the College as an Associate or Full Professor, renewable term or tenured. Candidates should hold a doctorate or have the equivalent experience in geology, geophysics or a closely related field.
More information
Dr. G. Randy Keller Named OGS Interim Director
Dr. Randy Keller, Professor and Edward Lamb McCollough Chair in Geology and Geophysics with OU's ConocoPhillips School of Geology and Geophysics, has been named Interim Director of the Oklahoma Geological Survey. Dr. Keller replaces Dr. Charles J. Mankin, who retired on October 31 of this year.
More on Dr. KellerGranite Wash Workshop Presented March 6, 2008
X-Ray Imaging Lab Opens at OPIC
The Oklahoma Geological Survey's Oklahoma Petroleum Information Center (OPIC) now provides x-ray imaging services to help users determine more about the characteristics of cores that are available for examination through the facility. The majority of OPIC's cores are from Oklahoma, although some originated in other states as.
Video x-ray fluoroscopy is a unique, analytical imaging technology that produces a continuous, real-time, in-motion, x-ray image of a core as well.
Recent Articles
Application of Organic Petrology to the Woodford Gas Shale Play by Brian J. Cardott
Overview of Woodford Gas-Shale Play in Oklahoma by Brian J. Cardott
Oklahoma 2006 Drilling Activitiy by Dan T. Boyd
Our Mission
The Oklahoma Geological Survey is a state agency for research and public service located on the Norman Campus of the University of Oklahoma and affiliated with the OU College of Earth and Energy. The Survey is chartered in the Oklahoma Constitution and is charged with investigating the state's land, water, mineral, and energy resources and disseminating the results of those investigations to promote the wise use of Oklahoma's natural resources consistent with sound environmental practices.
Page updated 8/25/08
Recent Updates to OGS Web
Basic Oklahoma Maps
counties, township and range,
geologic provinces,
Oklahoma boundaries
basic maps
Drought in Oklahoma and Texas Panhandles
Granite Wash Conference Presentations
Bibliography of Oklahoma Gas Shales
Bibliography of Woodford Shales
International Year
of Planet Earth
An international effort to generate renewed interest, excitement, and greater awareness about planet Earth. For more information, click on the link below.
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