Trip fees include transportation during the trip and a guidebook. Other services, such as meals and lodging, are included as noted.
All trips begin and end at the Pennsylvania Convention Center in Philadelphia unless otherwise indicated. Trip itinerary details will be provided upon registration and can also be obtained directly from the field trip leaders.
- 1. Along-Strike Changes in the Architecture of a Fold-Thrust Belt: An Example from the Hudson Valley, New York 
Thurs.-Sat., 19-21 Oct.
- Kurtis C. Burmeister, University of the Pacific, +1-217-369-2733, fax +1-213-740-8801, ; Steve Marshak.
- This trip will visit classic exposures of the Hudson Valley Fold-Thrust Belt in the region between the towns of Catskill and New Paltz. This region has been called a "fold-thrust belt in miniature" because of the dimensions of the structures. The dimensions and character of structures change along strike due to changes in predeformational stratigraphy. The drive to and from the field area will provide an opportunity to see the overall structural framework of the Appalachians in the heart of the New York Recess. Outcrops visited during the trip will allow examination of lithologic controls on pressure-solution cleavage development and discussion of factors controlling the development of map-view curves (e.g., oroclines) in fold-thrust belts. The nature of the transition between the Hudson Valley mini-thrust belt and the Pennsylvania Valley and Ridge megathrust belt will be discussed.
- Max.: 30; min.: 12. Cost: US$245 (2ON, vans).
- 2. Behind the Scenes at the American Philosophical Society, the Library Company, and the Academy of Natural Sciences: Research Collections in the History of Geology and Paleontology 
Fri., 20 Oct. Cosponsored by GSA History of Geology Division.
- Gary Rosenberg, Indiana University-Purdue University, +1-317-274-7468, fax +1-317-274-7966, ; Sally Newcomb.
- A day-tour behind the scenes at the American Philosophical Society (APS), the Library Company, and the Academy of Natural Sciences. The APS is America's first learned society, founded by Benjamin Franklin in 1743 for the pursuit of "all philosophical Experiments that let Light into the Nature of Things." The Library Company was founded in 1731 by Franklin and his colleagues, with the motto, "To pour forth benefits for the common good is divine." The Academy is the oldest natural sciences institution in the Western Hemisphere, founded in 1812 by artist and inventor Charles Willson Peale "for the encouragement and cultivation of the sciences." Among the highlights: Thomas Jefferson's fossil collection; William Parker Foulke's papers on America's first dinosaur, Hadrosaurus; the rediscovered copy of Nicholas Steno's first publication, De Thermis; Konrad Gesner's De rerum fossilium; and William Smith's first map of the geology of England.
- Max.: 30; min.: 5. Cost: US$79 (L, R, vans).
- 3. Buried Holocene Streams and Legacy Sediment: Late Pleistocene to Historical Changes in Stream Form and Process and Implications for Stream Restoration, Mid-Atlantic Piedmont Region 
Sat., 21 Oct.
- Dorothy Merritts, Franklin and Marshall College, +1-717-291-4398, fax +1-717-291-4186, ; Robert Walter; Ward Oberholtzer.
- A one-day trip centered in beautiful Lancaster County to observe examples of the depositional and erosion record of Piedmont stream channel changes over the past 300 years revealed in natural and artificial exposures. The historic record of channel form and process will be used to showcase examples of successful stream restoration techniques. Includes one stop in Valley Forge National Park to observe an in-progress restoration project.
- Max.: 35; min.: 10. Cost: US$89 (L, R, bus).
- 4. Coastal Hydrology and Processes of Atlantic Barrier Islands 
Sat., 21 Oct. — FULL
- Rip Kirby, Coastal Research Lab, University of South Florida, +1-850-217-1616, .
- Roundtrip travel to Cape May, New Jersey, and the Atlantic barrier islands on the New Jersey shore with presentations and discovery in the field. The field trip is arranged to explore by boat during the morning high tide the estuarine hydrologic and tidal processes surrounding Cape May that affect the flux of sediment seaward to the barrier island coastlines.
- Max.: 24; min.: 10. Cost: US$89 (B, R, vans).
- 5. Effects of Metasomatism and Fusion of Host Rock on the Chemistry of Early Jurassic Palisades Diabase in the Newark Basin 
Sat., 21 Oct. — Canceled.
- 6. Journey into Anthracite 
Sat., 21 Oct.
- Aaron R. Frantz, CDM, +1-610-293-0450, ; Ed Simpson; Dale Freudenberger.
- Three transects into the Southern Anthracite field will be made on this trip. The first and second transects will begin at the Mauch Chunk Formation, extend through the Pottsville Formation, and end at the Llewellyn Formation. These two transects will be made at Pottsville and Tamaqua, Pennsylvania, respectively. The third transect will be into the Llewellyn Formation at the renovated Number 9 Coal Mine in Lansford, Pennsylvania. The mine tour will transport participants 1600 ft into the subsurface; a 900-ft-deep mine shaft, among other features, will be viewed during the tour.
- Max.: 33; min.: 12. Cost: US$69 (L, R, vans).
- 7. Lacustrine Cyclicity and the Triassic-Jurassic Transition 
Fri.-Sat., 20-21 Oct. Cosponsored by GSA Sedimentary Geology Division; GSA Limnogeology Division.
- Paul Olsen, Lamont-Doherty Earth Observatory, Columbia University, +1-845-365-8491, fax +1-845-365-8163, ; Jessica Whiteside; Joseph Smoot.
- Combined field trip and workshop to the Newark basin of Pennsylvania to observe the Triassic-Jurassic mass-extinction level within the context of the famous Milankovitch cyclicity of the Newark Supergroup and explore the lacustrine facies in a modern limnological context.
- Max.: 40; min.: 5. Cost: US$245 (2L, R, ON, bus).
- 8. Late Pleistocene to Modern Lacustrine Processes and Paleoclimatic History in the Finger Lakes, New York 
Fri.-Sat., 20-21 Oct. — Canceled
- 9. New Insights to an Old Fold-Thrust Belt 
Fri.-Sat., 20-21 Oct. — Canceled
- 10. Plant Paleoecology and Geology of the Southern Anthracite Field, Pennsylvania 
Fri., 20 Oct.
- Hermann Pfefferkorn, University of Pennsylvania, +1-215-898-5156, fax +1-215-898-0964, ; Rudy Slingerland; William Kochanov.
- The Southern Anthracite Field is a classic area for paleobotany and Carboniferous stratigraphy that is very unusual in many respects. Plant fossils are preserved in anchimetamorphic rocks and are often replaced by the white mineral pyrophyllite. The plants occur predominantly in the bottom rock ("underclay") of coal seams rather than in the roof shale. Paleosols occur throughout the section, formed under widely different conditions at different times. The stratigraphic sections are largely continuous in spite of intense tectonism. This field trip will visit the classic Pottsville section that shows >1 km of section in slightly overturned, near vertical position. Late Mississippian through early Late Pennsylvanian stratigraphy, biostratigraphy, sedimentology, paleoclimatology, coal geology, paleosols, rooting structures, and plant fossils will be seen and discussed. The famous St. Clair locality will be visited, which is otherwise inaccessible.
- Max.: 44; min.: 17. Cost: US$69 (L, R, bus).
- 11. Prehistoric and Urban Landscapes of the Middle Atlantic Region: Geoarchaeological Perspectives 
Sat., 21 Oct. Cosponsored by GSA Archaeological Division.
- Joseph Schuldenrein, Geoarcheology Research Associates, +1-718-601-3861, fax +1-718-601-3864, .
- Contemporary and buried landscapes of the urban Northeast preserve evidence of complex land use and sedimentation patterns in conjunction with Holocene and historic human occupation. While industrialization and development has destroyed much of the pristine surfaces and landscapes, geoarchaeological investigations over the past 20 years have produced reconstructions of the landscape history that are tied to changing settlement and land utilization. This trip will sample a variety of the geoarchaeological environments that have been investigated as a result of historic preservation projects. The trip will begin in Philadelphia and extend northward up and across the Delaware Valley, spanning the margins of the Woodfordian glacial boundary, and it may extend as far north as northern New Jersey or even New York City.
- Max.: 50; min.: 30. Cost: US$85 (L, R, bus).
- 12. Refining the Metamorphic and Tectonic History of the Southeastern Pennsylvania Piedmont: Recent Results from Monazite and Zircon Geochronology and Accessory-Phase Thermometry 
Fri.-Sat., 20-21 Oct. — This trip is full.
- Joe Pyle, Rensselaer Polytechnic Institute, +1-518-276-4899, fax +1-518-276-2012, ; Hal Bosbyshell; Gale Blackmer.
- This field trip crosses the metamorphic core of the SE Pennsylvania Piedmont, from the Mesoproterozoic Honey Brook Upland (Northern Chester County) to the Ordovician Wilmington Complex (Pennsylvania-Delaware state line). The effects of Proterozoic and Paleozoic orogenic events on the SE Pennsylvania Piedmont are discussed in the context of recent results from monazite and zircon geochronology plus accessory-phase thermometry. Trip stops emphasize: (i) T-t history of Grenvillian and Late Paleozoic orogenesis in the Honey Brook Upland; (ii) contrasts in internal (Laurentian) and external (non-Laurentian?) basement massifs of the SE Pennsylvania Piedmont; (iii) age and P-T differences in Paleozoic metasediments of the Chester Valley Sequence versus the Wissahickon Schist; (iv) magmatism in the Wilmington Complex; and (v) the extent and significance of Barrovian Devonian metamorphism overprinting earlier Ordovician and Silurian Buchan metamorphism in the Wissahickon Schist.
- Max.: 25; min.: 7. Cost: US$245 (B, 2L, D, 2R, ON, vans).
- 13. Rivers, Glaciers, Landscape Evolution, and Active Tectonics of the Central Appalachians, Pennsylvania and Maryland 
Wed.-Sat., 18-21 Oct. Cosponsored by GSA Quaternary Geology and Geomorphology Division.
- Frank Pazzaglia, Lehigh University, +1-610-758-3667, fax +1-610-838-2344, ; Duane Braun; Noel Potter; Dru Germanoski; Milan Pavich; Paul Bierman; Dorothy Merritts; Allen Gellis.
- This trip will travel from the Great Falls of the Potomac to the head of Chesapeake Bay and up the Susquehanna River to the glacial boundary in north-central Pennsylvania, exploring the geologic and geomorphic record of late Cenozoic landscape evolution. The trip will emphasize what new research tells us about erosion, river incision, rock-uplift, and the pace of landscape change for the Appalachians over both geologic and human time scales.
- Max.: 30; min.: 15. Cost: US$375 (3B, 3L, 2D, 3ON, vans). Begins in Washington, D.C. Participants will be advised on arrival options.
- 14. Rodinian Collisional and Escape Tectonics in the Hudson Highlands, New York 
Thurs.-Sat. 19-21 Oct. — Canceled
- 15. Stratigraphy and Paleontology of the Chesapeake Group 
Wed.-Sat., 18-21 Oct. — Canceled
- 16. Stratigraphy of the Cambrian and Lower Ordovician Carbonates of the Kittatinny Supergroup, Northwestern New Jersey: Special Attention to the Nature and Timing of Silica Diagenesis and the Origin of Nodular Cherts 
Fri.-Sat., 20-21 Oct. — Canceled
- 17. Taconic Orogeny in the Susquehanna Shelf and Foreland 
Fri.-Sat., 20-21 Oct. — Canceled.
- 18. Tectonic History of the Blue Ridge, North-Central Virginia 
Thurs.-Sat., 19-21 Oct.
- Christopher (Chuck) Bailey, College of William and Mary, +1-757-221-2445, ; Scott Southworth; Richard Tollo.
- The Virginia Blue Ridge records a long tectonic history that encompasses the Mesoproterozoic Grenvillian orogen, Neoproterozoic Iapetan extension, Paleozoic ductile and brittle contractional structures, as well as subtle Mesozoic structures. This trip will traverse the Blue Ridge from east to west and includes stops along the scenic Skyline Drive in Shenandoah National Park and in the Shenandoah Valley.
- Max.: 32; min.: 12. Cost: US$285 (2B, 3L, D, 3R, 2ON, vans).
- 19. The Great Centralia Mine Fire: A Natural Laboratory for the Study of Coal Fires 
Sat., 21 Oct.
- Glenn Stracher, East Georgia College, +1-478-289-2073, fax +1-478-289-2050, ; Melissa Nolter; Daniel H. Vice; Janet L. Stracher.
- We will travel to the famous Centralia Mine Fire in the central Appalachian Mountains of eastern Pennsylvania, where we will discuss the coal stratigraphy and structural geology of the Western Middle coalfield as well as the origin, history, and socio-political-economic impact of the mine fire. Trip participants will see spectacular subsidence features, anthracite smokers (gas vents), and ground fissures associated with underground burning in abandoned coal-mine tunnels. Field techniques for collecting the mineral by-products of coal combustion and for collecting microarthropods from vegetation adjacent to gas vents and fissures will be demonstrated. Gas collection techniques using stainless steel gas canisters, a hand-operated sampler, and Tedlar gas bags will also be demonstrated as will in situ field analysis of select coal gas components using Drager tubes. An interview with one of the few remaining residents of Centralia is planned. Participants should be prepared for light hiking and possible inclement weather. People interested in coal stratigraphy, coal mining, and coal fires will enjoy this trip.
- Max.: 45; min.: 12. Cost: US$95 (L, D, R, bus).