The purpose of the Harrisburg Area Geological Society (HAGS) is to stimulate geologic thought, advance and disseminate geologic knowledge, and provide fellowship amongst area individuals interested in earth sciences. Monthly meetings (at GTS Technologies at 441 Friendship Road in Harrisburg) present a realm of geologic topics, ranging from tectonics, coal, carbonate groundwater geochemistry, Martian geomorphology, engineering geophysics, nuclear waste repositories, and ore mineralogy. Field trips allowed members to visit geologic sites within and beyond Pennsylvania. All events are open to the public and free unless otherwise stated.
President- Kent Littlefield- KENT.V.LITTLEFIELD@leidos.com
Vice-president- Bill Bruck- firstname.lastname@example.org
Treasurer- Jeb Baxter- email@example.com
Secretary- Amy Randolph- firstname.lastname@example.org
Up coming events :9-8-16 HAGS AEC mtg Halsor Yellowstone
The Ups and Downs of an Undergraduate Ground Deformation Survey in the Yellowstone Caldera, WY
Presented by: Sid Halsor, PhD – Wilkes University
Abstract: Over a ten year period, an annual team of Wilkes University (WU) faculty and students joined the Eastern Illinois University (EIU) Geology Field Camp to conduct a high-precision GPS ground deformation survey in the Yellowstone caldera. The objectives of the annual survey were to: 1) demonstrate to undergraduate students the use of GPS in volcano-system monitoring and 2) enable undergraduate students to contribute to the ongoing record of ground deformation measurements. The objectives were achieved using a two-tiered mentoring program in which WU faculty-student mentoring was followed by WU students mentoring students enrolled in the EIU Field Camp. The survey deployed successive WU-EIU student teams that simultaneously occupied three geodetic monuments per four hour log session. A one hour transition between log sessions was employed that allowed the entire eight point network to be occupied redundantly over a 39 hour non-stop period. WU-EIU students consistently rose to the challenges of a rigorous survey utilizing sophisticated instrumentation. Yearly GPS measurement results indicated a dynamically deforming caldera floor with deformational style changing over narrow scales in both time and space
Speaker Bio: Sid Halsor is chairperson and professor of geology in the Environmental Engineering and Earth Sciences Department at Wilkes University in Wilkes-Barre, PA. He received his B.S. in geology from the University of Oregon and his M.S and Ph.D from Michigan Technological University. His research interests include active volcanic systems, geologic hazards and mineral resources.
Fall 2016 HAGS/AEG meeting dates:
October 13, 2016 – Bob Beard, P.G., Leidos – The Mid-Atlantic Rockhound
November 10, 2016 – Dr. Dorothy Merritts, F&M College – Legacy Sediments
Spring 2017 HAG/AEG meting dates:
January 12, 2017 – speaker needed
February 9, 2017 – Al Guiseppe, P.G., SSM Inc. – Tackling Complexity through Stochastic Modeling: Yet Another Hydrogeologic Study of the Gettysburg Basin
March 9, 2017 – Seth Pelepko, P.G., DEP – Investigating Paleoenvironmental and Diagenetic Controls on the Skid Resistance of Carbonate Construction Aggregates Mined from the Lower Cambrian Kinzers Formation in the West York 7.5-minute Quadrangle, PA
April 13 – speaker needed
May 11 – speaker needed
HAGS Guidebooks, available for purchase
1st Annual Field Trip‐Geology in the South Mountain area, Pennsylvania, Noel Potter, Jr., editor, April 24, 1982, Reprinted 1992. 37 p. $5.00 plus $2.00 S&H.
2nd Annual Field Trip‐ Geology along the Susquehanna River, south‐central Pennsylvania, J. Ronald Mowery, editor, April 16, 1983, 55 p. $5.00 plus $2.00 S8H.
3rd Annual Field Trip‐ Stratigraphy, structural style, and economic geology of the York‐Hanover Valley, G. Robert Ganis and David Hopkins, April 28,1984, 51 p. $5.00 plus $2.00 S&H.
4th Annual Field Trip‐ Pennsylvania’s polygenetic landscape, William D. Sevon, April 27, 1985, Reprinted 1992, 55 p. $5.00 plus $2.00 S&H.
5th Annual Field Trip‐ Selected geology of Dauphin and Northumberland Counties, Pennsylvania, by W. D. Sevon, W. E. Edmunds, G. R. Ganis, and J. P. Wilshusen, May 17, 1986, 22 p. $5.00 plus $2.00 S&H.
6th Annual Field Trip‐ Lower Jurassic diabase and the Battle of Gettysburg, D. T. Hoff, J. R. Mowery, and G. R. Ganis, April 25, 1987,17 p. plus appendices. $5.00 plus $2.00 S&H.
7th Annual Field Trip‐ The geology of the Lower Susquehanna River area, a new look at some old answers, Glenn H. Thompson, Jr., editor, May 7,1988, 56 p. $5.00 plus $2.00 S&H.
8th Annual Field Trip‐ Karst development and environmental geology in the carbonate rocks of the Lehigh and Lebanon Valleys, William E. Kochanov, April 29, 1989, 33 p. $5.00 plus $2.00 S&H.
In cooperation with the 20th annual Binghamton Geomorphology Symposium at Dickinson College‐The rivers and valleys of Pennsylvania, then and now, by William D. Sevon, October 20, 1989, 59 p. $5.00 plus $2.00 S&H.
10th Annual Field Trip‐ The Ridge and Valley Physiographic Province and the East Broad Top Railroad, William D. Sevon, June 1, 1991, 24 p. $5.00 plus $2.00 S&H.
11th Annual Field Trip‐ Paleozoic geology of the Paw Paw‐Hancock area of Maryland and West Virginia, Marcus M. Key and Noel Potter, Jr., May 9,1992, 25 p. $5.00 plus $2.00 S&H.
12th Annual Field Trip‐ South Mountain and the Triassic in Adams County, Pennsylvania, Raymond Britcher, editor, May 22, 1993, 41 p. $5.00 plus $2.00 S&H.
13th Annual Field Trip‐ Geology of the Lebanon Valley and western end of the Reading Prong, Charles Scharnberger, editor, April 23. 1994, 68 p. $7.00 plus $2.00 S&H.
15th Annual Field Trip‐ Pseudo‐Morainic Topography of the Allentown Area of Eastern Pennsylvania, Duane D. Braun and William E. Kochanov, May 4, 1996, 28 p. $7.00 plus $2.00 S&H.
16th Annual Field Trip‐ Notes on the Hamburg Klippe: biostratigraphy, ash layers, olistostromes, and “exotics,” G. Robert Ganis, April 26, 1997, 52 p. $15.00 plus $2.00 S&H
17th Annual Field Trip‐ Geomorphology in the Northern Cumberland Valley, PA, including the Carlisle Deluge of 1779, Noel Potter, Jr., Donald Hartman, and Helen Delano, April 18, 1998, 49 p, $7.00 plus $2.00 S&H.
18th Annual Field Trip‐ The Cove Syncline by canoe, William M. Roman and Michael A. Knight, May 15, 1999, 16 p. plus maps, Out of Print
19th Annual Field Trip‐ Geology of the Kishacoquillas Valley and vicinity, Mifflin County, Pennsylvania, Michael A. Knight and William M. Roman, May 20, 2000, 18 p. plus maps and sections, $7.00 plus $2.00 S&H.
20th Field Trip‐ Geology and Geomorphology of the South Mountain Area, Cumberland and Franklin Counties, Pennsylvania, Noel Potter, Jr., and William D. Sevon, May 14, 2011, 64 p., $10.00 plus $2.00 S&H.
No formal guidebooks were prepared for the 9th (1990) and 14th (1995) Field Trips. The 2001 trip was a repeat of the 2000 trip.