About Terry Engelder (a short bio)
Penn State's Seal Evaluation Consortium (SEC)
Structural Geology Class Notes (GEOSC 465)
Welcome to Terry Engelder's Homepage

 Penn State
A natural hydraulic fracture driven by gas with the compressibility of methane. The rupture propagated from right to left as indicated by plumose morphology showing two increments with surface roughness increasing until arrest.

Natural gas reservoir may hike U.S. output

This is the original Penn State press release from January 2008 that first drew public attention to the possibility that the gas resource in the Marcellus was about to have a significant impact on America's energy portfolio

STATE COLLEGE, Pa., Jan. 17 (UPI) -- Geoscientists said a natural gas black shale reservoir in northern Appalachia could conservatively boost proven U.S. reserves by trillions of cubic feet. However, that depends upon gas production companies employing horizontal drilling techniques, said Penn State and State University of New York-Fredonia geologists. "The value of this science could increment the net worth of U.S. energy resources by a trillion dollars, plus or minus billions," said Penn State Professor Terry Engelder. The Marcellus shale field stretches from southern New York, through western Pennsylvania into the eastern half of Ohio and across West Virginia. Engelder and SUNY Professor Gary Lash said the Marcellus shale conservatively contains 168 trillion cubic feet of natural gas in place, but the figure might be as high as 516 trillion cubic feet. The researchers said that America (U.S., Canada, and Mexico) currently produces roughly 30 trillion cubic feet of gas annually. Engelder said the technology exists to recover 50 trillion cubic feet of gas just from the Marcellus, making it a super giant gas field. Engelder and Lash will present their findings in San Antonio this spring during the annual meeting of the American Association of Petroleum Geologists.
Terry Engelder
Professor of Geosciences

Department of Geosciences
334A Deike Building
The Pennsylvania State University
University Park, Pennsylvania 16802


Phone: 814-865-3620
Fax: 814-863-7823

Penn State - B.S. 1968
Yale - M.S. 1972
Texas A&M - Ph.D. 1973

Interests: Structural Geology; Geological Fracture Mechanics; Rock Mechanics; Appalachian Tectonics

Outcrops of Marcellus
Link to pictures of Marcellus in outcrop

Peek at a Favorite Geological Story!

Peek at Favorite Structures, Worldwide!

Back to Geosciences homepage
Back to Penn State homepage