Division Column: DEG

Share the Facts About Energy

In this, my farewell column, I want to thank the people who have made my service as president of the Division of Environmental Geosciences (DEG) so rewarding.

A list of names would be too long, so I will try to cover my bases in categories.

  • My fellow officers have worked hard to move us forward and expand our membership; those who have agreed to run for office for the coming year also have my gratitude.
  • Our advisers from across the country, and from the few Regions for whom we have advisers, have given valuable advice and direction.
  • The Region presidents who are working right now to help DEG find an adviser for every Region will make our Advisory Council even stronger.
  • Those who have worked to produce the Environmental Geosciences journal have produced an outstanding set of issues – thanks to the top-level editors, all of the associate editors and, of course, all who have submitted articles for publication. Keep them coming!
  • Committee chairs have been responsive, helping to bring DEG sessions and short courses to the upcoming Denver convention and for the New Orleans convention next year. We even have a head start on the Houston convention – we already have four sessions set for 2011.
  • Finally, many thanks to the AAPG headquarters staff for helping to upgrade our Web site; for keeping us on track and at least close to meeting deadlines; for their support in convention planning; and for the many other ways in which they support our efforts.

The DEG was established in 1992, when “the House of Delegates of the Association indicated support for the concept that basic environmental issues be addressed from a geological point of view, thereby transferring the profession’s understanding of geological, geochemical, geophysical and hydrogeological principles and methodologies to the solutions of environmental problems.”

It seems that basic environmental issues are often divorced from scientific reasoning of any kind, at least in the popular media. U.S. President Obama has vowed to bring science into the forefront of environmental issues, and we need to vigorously step forward and offer our perspectives and our expertise.

We need to gain recognition for the fact that the petroleum industry is investing billions in developing new energy technologies and carbon mitigation technologies, as well as in energy efficiency, advanced technology vehicles and non-hydrocarbon fuels – far more than is being invested by the federal government.

All this at the same time our industry is taxed at a far higher rate than other industries, while our earnings are in line with the average of U.S. manufacturing industries!

Getting these messages out should be a priority for anyone who has access to an audience. I highly recommend that you read the new April 2009 American Petroleum Institute publication “Energizing America: Facts for Addressing Energy Policy”.

Share these facts about energy – I spent an entire lecture on this material in my Environmental Science class last week.


I hope to see many of you in Denver, and I hope that you choose to attend our sessions, which include:

  • Imagining a Carbon Constrained World: EOR Using Anthropogenic CO2and Other Options.
  • Near-Surface Geophysical Applications for Environmental Solutions, Groundwater and Site Remediation.
  • Carbon Dioxide Capture and Geologic Sequestration.
  • Our Energy Forum (held jointly with DPA and EMD).

We also are offering the forum concerning Global Climate Change – Anticipating a Carbon Constrained Future: Implications for the Fossil Fuel Industry (DEG/AAPG/GCCC), and our luncheon speaker will address the Cooperative Aquifer Restoration Project, Fort Peck Indian Reservation – a Multi-Agency Success Story.

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Division Column-DEG

Division Column-DEG Rebecca Dodge

Rebecca Dodge, of Midwestern State University in Wichita Falls, Texas, is DEG President for 2008-09.

Division Column DEG

The Division of Environmental Geosciences (DEG), a division of AAPG, is concerned with increasing awareness of the environment and the petroleum industry and providing AAPG with a scientific voice in the public arena. Among its objectives are educating members about important environmental issues, supporting and encouraging research on the effects of exploration and production on the environment, and communicating scientific information to concerned governmental agencies.

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See Also: Book

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This article describes a 250-m (820-ft)-thick upper Eocene deep-water clastic succession. This succession is divided into two reservoir zones: the lower sandstone zone (LSZ) and the upper sandstone zone, separated by a package of pelitic rocks with variable thickness on the order of tens of meters. The application of sequence-stratigraphic methodology allowed the subdivision of this stratigraphic section into third-order systems tracts.

The LSZ is characterized by blocky and fining-upward beds on well logs, and includes interbedded shale layers of as much as 10 m (33 ft) thick. This zone reaches a maximum thickness of 150 m (492 ft) and fills a trough at least 4 km (2 mi) wide, underlain by an erosional surface. The lower part of this zone consists of coarse- to medium-grained sandstones with good vertical pressure communication. We interpret this unit as vertically and laterally amalgamated channel-fill deposits of high-density turbidity flows accumulated during late forced regression. The sandstones in the upper part of this trough are dominantly medium to fine grained and display an overall fining-upward trend. We interpret them as laterally amalgamated channel-fill deposits of lower density turbidity flows, relative to the ones in the lower part of the LSZ, accumulated during lowstand to early transgression.

The pelitic rocks that separate the two sandstone zones display variable thickness, from 35 to more than 100 m (115–>328 ft), indistinct seismic facies, and no internal markers on well logs, and consist of muddy diamictites with contorted shale rip-up clasts. This section is interpreted as cohesive debris flows and/or mass-transported slumps accumulated during late transgression.

The upper sandstone zone displays a weakly defined blocky well-log signature, where the proportion of sand is higher than 80%, and a jagged well-log signature, where the sand proportion is lower than 60%. The high proportions of sand are associated with a channelized geometry that is well delineated on seismic amplitude maps. Several depositional elements are identified within this zone, including leveed channels, crevasse channels, and splays associated with turbidity flows. This package is interpreted as the product of increased terrigenous sediment supply during highstand normal regression.

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The Arctic Technology Conference (ATC) has announced the two companies that will receive the 2015 Spotlight on Arctic Technology Award, recognizing innovative new products that provide significant impact for Arctic exploration and production.
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Upon successful completion of this course, you will be able to describe faults and fractures in carbonates, black shales, and coarser clastics as they occur in the northern Appalachian Basin.

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