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Welcome The Geophysical Society of Pittsburgh is a nonprofit organization dedicated to promoting the science of geophysics in the Appalachian Basin. We are an official section of the Society of Exploration Geophysics (SEG). Bi-monthly meetings are generally held from September to May on the first Tuesday of each month at various locations around the Greater Pittsburgh area. However, be sure to check the event calendar as exceptions to this rule occur often. All interested parties are encouraged to attend.
| ABGS Call for Abstracts SAVE THE DATE - 6th Annual Appalachian Basin Geophysical Symposium & ABGS Golf Outing Call for Abstracts for the 6th Annual Appalachian Basin Geophysical Symposium, to be held on Tuesday, June 3rd, 2025. Now accepting abstracts and talks emailed to: harbert@pitt.edu Abstract submission deadline – 4/18/25 Keynote speaker: Joseph Reilly, President-elect of the Society of Exploration Geophysicists, presenting: “From Spiking Deconvolution to Controlled Amplitude Controlled Phase, to Broadband, to Extended Bandwidth – Respecting the Fundamentals of Achievable Wavelet Resolution” Early Bird Registration, Sponsorship and Exhibits will be accepted at http://thegsp.org/
This will be an in-person symposium. We look forward to seeing all of you in Pittsburgh. April Meeting Iapetan-Opening Rift Faults and Detachments at the Pennsylvania Salient and New York Recess, Appalachian Plateau: Seismic Reflection Profiles and Implications -OR- Where Do Those Pesky Iapetan-Opening/Rome Trough Faults Go to the North? Tuesday, April 15th, 2025 11:15 to 11:45 Social Half Hour 11:45 pm Lunch Buffet 12:00 pm Lecture This month's lecture will be held at: 1900 Pre-Function Auditorium Range Resources Office: 3000 Town Center Blvd Canonsburg, 15317 Presented By: Dr. Robert D. Jacobi, Geoscience Consulting. Examples of growth fault geometries at the Neoproterozoic/Cambrian contact are displayed in seismic reflection profiles from the Pennsylvania salient of western New York and Pennsylvania. Fault-bounded reflectors below the Cambrian Potsdam reflector confirm syntectonicbasin fill of probable Iapetan-opening age. Most of these faults constitute the arcuate (map view) fault system of the Pennsylvania salient, and one seismic section displays northerly-striking consequent faults that are reactivated intra-Grenvillian suture fault systems. Following the concepts of Bill Thomas, the wide zone of faults and rifts, including the Rome trough, suggests that an east-facing master detachment (present coordinates) lay along the eastern Laurentian margin in Pennsylvania. In this model the arcuate fault pattern of the Pennsylvania salient marks a curved, faulted, lateral ramp at the northeasterly end of the master detachment. The linked Pennsylvania salient and New York recess is a transfer zone where the Laurentian margin stepped east (present coordinates) away from the general Grenvilliantrends, crossing and truncating the Grenvilliantrends in New York State. The strike of Iapetan-opening faults in the northeastern Adirondack massif does not agree with the detachment model for the Pennsylvania salient. Rather, the orientation of the Adirondack faults may reflect a local stress field set up by a rising mantle plume and possible triple junction.
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