Additional Resources for the Earth Science of the Northeastern United States

General

Books, articles, and reports

Baldwin, B. 1982. Geology of Vermont. Earth Science, fall 1982, pp. 10-14. PDF: https://dec.vermont.gov/sites/dec/files/geo/StatewidePubs/Baldwin_1982.pdf

Barnes, J. H., and W. D. Sevon. 2002. The geological story of Pennsylvania. Pennsylvania Geological Survey, Educational Series 4, 46 pp.

Bell, M. 1985. The face of Connecticut: People, geology and the land. The State Geological and Natural History Survey of Connecticut, Bulletin 110, Hartford, Connecticut, 196 pp.

Loiselle, M., and W. B. Thompson. 1987. The geology of Maine. Rocks & Minerals 62: 386–392. https://doi.org/10.1080/00357529.1987.11762692

Plank, M. O. and W. S. Schenck. 1998. Delaware Piedmont Geology. Delaware Geological Survey, University of Delaware, Special Publication 20, 64 pp. PDF: https://www.dgs.udel.edu/publications/sp20-delaware-piedmont-geology

Reed, J. C., Jr., R. S. Sigafoos, and G. W. Fisher. 1980. The geologic story of Great Falls and the Potomac River Gorge. U.S. Geological Survey Bulletin 1471, 75 pp. PDF: https://doi.org/10.3133/b1471

Schmidt, M. F. 1993. Maryland's geology. Tidewaters Publishers, Centerville, Maryland, 164 pp.

Schuberth, C. J. 1968. The geology of New York City and environs. Natural History Press, Garden City, New York, 304 pp.

Shultz, C. H., ed. 1999. The Geology of Pennsylvania. Pennsylvania Geological Survey and Pittsburg Geological Society, Harrisburg, Pennsylvania, 888 pp.

Subitzkey, S., ed. 1969. Geology of selected areas in New Jersey and eastern Pennsylvania, Rutgers University Press, New Brunswick, New Jersey.

Titus, R., and J. Titus. 2016. The Catskills: A geological guide, expanded edition. Purple Mountain Press, Fleshmanns, New York, 202 pp.

Wolfe, P. E. 1977. Geology and landscape of New Jersey. Crane Russak, New York, 351 pp.

Field trip guides

Wright, S. F., ed. 1999. Guidebook to field trips in Vermont and adjacent regions of New Hampshire and New York. New England Intercollegiate Geological Conference, 91st annual meeting, Burlington, Vermont, 377 pp. PDF: https://anrweb.vt.gov/PubDocs/DEC/GEO/MiscPubs/NEIGC/NEIGC_AnnMtg_1999.pdf

Roy, D. C., ed. 1987. Northeastern Section of the Geological Society of America. Centennial Field Guide 5. Geological Society of America, Boulder, Colorado.

Volkert, R., and R. Witte. Geologic history and virtual field trip of the New Jersey Highlands. New Jersey Geological Survey, 100 slides. PDF: https://nj.gov/dep/njgs/enviroed/freedwn/HighlandsVFT.pdf

Websites

Connecticut Geological and Natural History Survey: https://portal.ct.gov/DEEP/Geology/CT-Geological-and-Natural-History-Survey-V2

The Delaware Geological Survey: https://www.dgs.udel.edu/

Delaware Valley Earth Science Society: http://www.dvess.org/

The Geology of Delaware (The Delaware Geological Survey): https://www.dgs.udel.edu/delaware-geology

Geological Society fo New Hampshire: http://www.gsnh.org/

Geology and geography of New York Bight beaches (Phil Stoffer and Paula Messina): http://www.geo.hunter.cuny.edu/bight/index.html

Maine Geological Survey: https://www.maine.gov/dacf/mgs/index.shtml

Maryland Geological Survey: http://www.mgs.md.gov/

The Massachusetts Geological Survey: https://mgs.geo.umass.edu/

New Hampshire Department of Environmental Services: https://www.des.nh.gov/

New Hampshire Geology: https://www.nhgeology.org/

New Jersey Division of Water Supply and Geoscience: https://www.state.nj.us/dep/njgs/

New York State Geological Association: https://www.nysga-online.org/

Pennsylvanian Department of Conservation & Natural Resources, Bureau of Geological Survey: https://www.dcnr.pa.gov/about/Pages/Geological-Survey.aspx

Rhode Island Geological Survey: https://web.uri.edu/geo/rhode-island-geological-survey/

Vermont Geological Survey: https://dec.vermont.gov/geological-survey

Activities

Activities and resources for Earth Science teachers (Maine Geological Survey): https://www.maine.gov/dacf/mgs/education/lessons/index.shtml

Geologic history

Books, articles, and reports

Bain, G. W., and H. A. Meyerhoff. 1976. The flow of time in the Connecticut Valley. Connecticut Valley History Museum, Springfield, Massachusetts.

Hatcher, R. D., Jr., W. A. Thomas, and G. W. Viele, eds.. 1989. The Appalachian-Ouachita Orogen in the United States. The Geology of America vol. F-2. Geological Society of America, Boulder, Colorado, 767 pp. [Technical.] https://doi.org/10.1130/DNAG-GNA-F2

McPhee, J. 1983. In suspect terrain. Farrar, Straus, Giroux, New York, New York.

Rodgers, J. 1971. The Taconic Orogeny. GSA Bulletin 82(5): 1141–1178. https://doi.org/10.1130/0016-7606(1971)82[1141:TTO]2.0.CO;2

Tesmer, L. H., ed. 1981.Colossal cataract: The geological history of Niagara Falls. State University of New York Press, Albany, New York.

Zen, E.-a., ed. 1968. Studies of Appalachian Geology: Northern and maritime. Interscience Publishers, New York, 475 pp.

Websites

Newark Basin and Connecticut River Basin (Phil Stoffer and Paula Messina): http://www.geo.hunter.cuny.edu/bight/newark.html

Rocks

Books, articles, and reports

Caldwell, D. W. 1998. Roadside geology of Maine. Mountain Press Publishing Company, Missoula, Montana, 317 pp.

Cristofono, P. 2020. Rockhounding New England: A guide to 100 of the region's best rockhounding sites, 2nd ed. Falcon Guides, 344 pp. 

Dooley, J. H., and D. P. Harper. 1996 (revised 1998, 2005). New Jersey rocks and sediments. New Jersey Geological Survey, 22 pp. PDF: https://www.state.nj.us/dep/njgs/enviroed/freedwn/njrocksbook.pdf

Harper, D. P. 2013. Roadside geology of New Jersey. Mountain Press Publishing Company, Missoula, Montana, 360 pp.

Isachsen, Y. W., E. Landings, J. M. Lauber, L. V. Rickard, and W. B. Rogers, eds. 2000. Geology of New York, a simplified account, 2nd. ed. New York State Geological Survey, New York State Museum, Cultural Education Center, Albany, New York, 294 pp.

Means, J. 2015. Roadside geology of Maryland, Delaware, and Washington, D.C. Mountain Press Publishing Company, Missoula, Montana, 346 pp.

Pallis, T. 2012. New Jersey brownstone. New Jersey Geological and Water Survey Information Circular, Trenton, New Jersey, 4 pp. PDF: https://www.nj.gov/dep/njgs/enviroed/infocirc/brownstone.pdf

Schmidt, M. E., Jr. 1993. Maryland's geology. Tidewaters Publishers, Centerville, Maryland.

Skehan, J. W. 2001. Roadside geology of Massachusetts. Mountain Press Publishing Company, Missoula, Montana, 379 pp.

Skehan, J. W. 2008. Roadside geology of Connecticut and Rhode Island. Mountain Press Publishing Company, Missoula, Montana, 304 pp.

Van Diver, B. B. 1985. Roadside geology of New York. Mountain Press Publishing Company, Missoula, Montana, 411 pp.

Van Diver, B. B. 1987. Roadside geology of Vermont and New Hampshire. Mountain Press Publishing Company, Missoula, Montana, 230 pp.

Van Diver, B. B. 2014. Roadside geology of Pennsylvania, reprinted ed. Mountain Press Publishing Company, Missoula, Montana, 362 pp.

Websites

Vermont State rocks (Vermont Department of Environmental Conservation): https://dec.vermont.gov/geological-survey/vermont-geology/staterx

Maps

AAPG. 1976. Northeastern region geological highway map. [Includes Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, and Vermont.]

Fossils

General/multiple states

Books, articles, and reports

Edelstein, K. 1999. Lasting impressions: A guide to understanding fossils in the northeastern United States. Cornell University, Ithaca, New York.

Miranda, A. 2019. The Delaware Water Gap: A window into Earth's early oceans. Park Paleontology News 11(2), Fall 2019. https://www.nps.gov/articles/park-paleo-fall-2019-delaware.htm

Weshampel, D. B., and L. Young. 1996. Dinosaurs of the East Coast. Johns Hopkins University Press, Baltimore, Maryland.

Websites

The Connecticut River Valley (by Sajirat Palakarn, The Joe Webb Peoples Fossil Collection, Wesleyan University): https://wespeoplesfossils.blogs.wesleyan.edu/2017/07/09/the-connecticut-river-valley/

Connecticut

Books, articles, and reports

Rogers, O. 2022. Discovered dinosaur tracks re-route highway and lead to state park. ConnecticutHistory.org, 23 August 2022. https://connecticuthistory.org/discovered-dinosaur-tracks-re-route-highway-and-lead-to-state-park/

Websites

Dinosaur State Park (The Friends of Dinosaur Park and Arboretum): https://www.dinosaurstatepark.org/

Dinosaur State Park (Department of Energy and Environmental Protection, state of Connecticut): https://portal.ct.gov/DEEP/State-Parks/Parks/Dinosaur-State-Park

Delaware

Books, articles, and reports

Lauginiger, E. M. 1988. Cretaceous fossils from the Chesapeake and Delaware Canal: A guide for students and collectors. Delaware Geological Survey Special Publication 18, 75 pp. PDF: https://www.dgs.udel.edu/publications/sp18-cretaceous-fossils-chesapeake-and-delaware-canal-guide-students-and-collectors

Lauginiger, E. M., and E. F. Hartstein. 1983. A guide to fossil sharks, skates, and rays from the Chesapeake and Delaware Canal area, Delaware. Delaware Geological Survey Open File Report 21, 63 pp. PDF: https://www.dgs.udel.edu/publications/ofr21-guide-fossil-sharks-skates-and-rays-chesapeake-and-delaware-canal-area-delaware

Pickett, T. E. 1972. Guide to common Cretaceous fossils of Delaware. Delaware Geological Survey Report of Investigations 21, 28 pp. PDF: https://www.dgs.udel.edu/publications/ri21-guide-common-cretaceous-fossils-delaware

Websites

Fossils (The Delaware Geological Survey): https://www.dgs.udel.edu/delaware-geology/fossils

Maine

Books, articles, and reports

Churchill-Dickson, L. 2007. Maine's fossil record: The Paleozoic. Maine Geological Survey, Department of Conservation, 500 pp.

Maine Geological Survey. 2009. Virtual tour of Maine's fossils. Circular VT-3, Maine Geological Publications 576, 57 pp. PDF: https://digitalmaine.com/mgs_publications/576

Websites

Maine fossils: remains of life from another time and place (Maine Geological Survey): https://www.maine.gov/dacf/mgs/explore/fossils/fossil.htm

Maryland

Books, articles, and reports

Glaser, J. D. 1979. Collecting fossils in Maryland. Department of Natural Resources, Maryland Geological Survey, 79 pp.

Godfrey, S. J., ed. 2018. The geology and vertebrate paleontology of Calvert Cliffs, Maryland, USA. Smithsonian Contributions to Paleobiology 100. Smithsonian Institution Scholarly Press, Washington, D.C., 274 pp. [Technical.] PDF: https://doi.org/10.5479/si.1943-6688.100 

Kent, B. W. 1994. Fossil sharks of the Chesapeake Bay Region. Egan Rees & Boyer, Inc., Columbia, Maryland.

Kranz, P. M. 1989. Dinosaurs in Maryland. Department of Natural Resources, Maryland Geological Survey, Educational Series 6, 34 pp.

Strain, D. 2013. The Chesapeake's excellent fossils. Chesapeake Quarterly 12(4), December 2013. https://www.chesapeakequarterly.net/V12N4/main2/

Websites

Dinosaur Park (Maryland-National Capital Park and Planning Commission): https://www.pgparks.com/3259/Dinosaur-Park

Fossil identification (Calvert Marine Museum): https://www.calvertmarinemuseum.com/203/Fossil-Identification

Fossils (Maryland Geological Survey): http://www.mgs.md.gov/geology/fossils/index.html

Massachusetts

Books, articles, and reports

McBrien, M. A. 1976. Massachusetts fossils. Rocks & Minerals 51: 234–236. https://doi.org/10.1080/00357529.1976.11762799

Vaccaro, A. 2015. Millions of years ago, western Massachusetts was a Jurassic world. Boston.com, June 15, 2015. https://www.boston.com/news/local-news/2015/06/15/millions-of-years-ago-western-massachusetts-was-a-jurassic-world/

Warner, F.L. 1937. On a New England Campus. The University Press, Cambridge, Massachusetts. [Includes Mignon Talbot's recollections of finding the Massachusetts state dinosaur, Podokesaurus holyokensis.]

Websites

Web resources from the Paleontological Research Institution:

Mignon Talbot (Daring to Dig online exhibit): https://www.museumoftheearth.org/daring-to-dig/bio/talbot

Other web resources:

Impressions from a lost world: The discovery of dinosaur footprints in the Connecticut River Valley of New England (online exhibit, Pocumtuck Valley Memorial Association): https://www.dinotracksdiscovery.org/

New Jersey

Books, articles, and reports

Hagge, P. 2018. Jersey's fossil history shows that giants lived here. New Jersey Monthly, November 16, 2018. https://njmonthly.com/articles/historic-jersey/fossils-giants-lived-here/

Choi, C. Q. 2009. Digging up valuable fossils in suburban New Jersey. Scientific American, September 1, 2009. https://www.scientificamerican.com/article/digging-up-valuable-fossils-in-nj/

Websites

Fossils of New Jersey (John Whitley): http://fossilsofnj.com/

Jean & Ric Edelman Fossil Park & Museum of Rowan University: https://www.rowan.edu/fossils/

Poricy Park Fossil Beds (Poricy Park Conservancy): https://poricypark.org/fossil-beds

New York

Books, articles, and reports

Books from the Paleontological Research Institution:

Linseley, D. M. 1994. Devonian Paleontology of New York. Paleontological Research Institution, Ithaca, New York.

Other books, articles, and reports:

Brannen, P. 2018. Glimpses of a mass extinction in modern-day western New York. The New Yorker, July 4, 2018. https://www.newyorker.com/science/elements/glimpses-of-a-mass-extinction-in-modern-day-western-new-york

Heubusch, C.A. no date. Common Fossils of Western New York. Buffalo Museum of Science. https://doi.org/10.5962/bhl.title.19469

Websites

Web resources from the Paleontological Research Institution:

Historical paleontologists working on New York fossils:

• Carol Faul (Daring to Dig online exhibit): https://www.museumoftheearth.org/daring-to-dig/bio/faul
• Winifred Goldring (Daring to Dig online exhibit): https://www.museumoftheearth.org/daring-to-dig/bio/goldring
• Sarah Hall (Daring to Dig online exhibit): https://www.museumoftheearth.org/daring-to-dig/bio/hall

Virtual Collection: Devonian Fossils of New York: https://www.digitalatlasofancientlife.org/vc/devonian/

Other web resources:

Gilboa Museum and Juried History Center (Gilboa, New York): https://www.gilboafossils.org/

New York Paleontological Society: http://www.nyps.org/

Oldest known fossil forest discovered in Town of Cairo, New York (Town of Cairo, New York): https://townofcairo.com/oldest-known-forest-discovered-in-town-of-cairo-new-york/

Paleontology and beach fossils of the New York Bight (Phil Stoffer and Paula Messina): http://www.geo.hunter.cuny.edu/bight/fossil.html

Penn Dixie Fossil Park & Nature Reserve: https://penndixie.org/

Rochester Academy of Science Fossil Section: https://rasny.org/fossil-section

Wooster's Fossils of the Week: Eurypterids (Late Silurian of New York) (by Mark A. Wilson, Wooster Geologists): https://woostergeologists.scotblogs.wooster.edu/2011/12/11/wooster%E2%80%99s-fossils-of-the-week-eurypterids-late-silurian-of-new-york/

Pennsylvania

Books, articles, and reports

Harper, J. A., D. M. Hoskins, and J. D. Inners. 1983. Fossil collecting in Pennsylvania. Pennsylvania Geological Survey, Harrisburg, Pennsylvania.

Hoskins, D. M. 1999. Common fossils of Pennsylvania. Pennsylvania Geological Survey, Educational Series 2, 18 pp. PDF: http://elibrary.dcnr.pa.gov/GetDocument?docId=1752497&DocName=ES2_Fossils_Pa.pdf

Lamborn, R. 1978. The paleontology of western Pennsylvania. Rocks & Minerals 53: 99–103. https://doi.org/10.1080/00357529.1978.11764762

Websites

Fossil pit (Montour Preserve): https://montourpreserve.org/fossil-pit/

Identifying and collecting [includes downloads of illustrations of Pennsylvania's fossils from various time periods] (Pennsylvania Department of Conservation & Natural Resources): https://www.dcnr.pa.gov/Education/GeologyEducation/IdentifyingandCollecting/Pages/default.aspx

Port Kennedy Bone Cave (by Justin Tweet, Valley Forge National Historical Park): https://www.nps.gov/articles/000/pleistocene-life-and-landscapes-valley-forge.htm

Rhode Island

Books, articles, and reports

Fay, L. P. 1986. Fossils of Rhode Island. Rocks & Minerals 61(5): 278–280. https://doi.org/10.1080/00357529.1986.11762726

Vermont

Books, articles, and reports

Teresi, D. 2007. Paleozoic Vermont. Smithsonian Magazine, January 2007. https://www.smithsonianmag.com/science-nature/paleozoic-vermont-143627957/

Websites

Chazy Reef at Isle LaMotte (Department of Environmental Conservation, Vermont): https://dec.vermont.gov/geological-survey/vermont-geology/Chazy

Mineral resources

Books

Grandy, J. W. 1982. Guide to eastern rocks and minerals. Hancock House Publishers, Ltd., British Columbia, Canada.

Jensen, D. E. 1978. Minerals of New York State. Ward Press, Rochester, New York.

King, V. T., ed. 2000. Mineralogy of Maine, vol. 2: Mining history, gems, and geology. Maine Geological Survey, 524 pp.

King, V. T., and E. E. Foord, eds. 1994. Mineraology of Maine, vol. 1: Descriptive mineralogy. Maine Geological Survey, 418 pp. 

Miller, C. E. 1972. Minerals of Rhode Island. University of Rhode Island, Providence, Rhode Island.

Thompson, W. B., D. L. Joyner, R. G. Woodman, and V. T. King. 1998. A collector's guide to Maine mineral localities, 3rd ed. Maine Geological Survey, Augusta, Maine.

Websites

Franklin Mineral Museum (Franklin, New Jersey): https://www.franklinmineralmuseum.org/

Mineral and energy resources (Maryland Geological Survey): http://www.mgs.md.gov/geology/minerals_energy_resources/index.html

Mineral resources (The Delaware Geological Survey): https://www.dgs.udel.edu/delaware-geology/mineral-resources

New York State Academy of Mineralogy: http://nysam.org/

Sterling Hill Mining Museum (Ogdensburg, New Jersey): https://www.sterlinghillminingmuseum.org/

Glaciers

Books, articles, and reports

Books from the Paleontological Research Institution

Bloom, A. L. 2018. Gorges history: landscapes and geology of the Finger Lakes region. Paleontological Research Institution, Ithaca, New York, 214 pp.

Other books, articles, and reports

Hughes, T., H. W. Boms, Jr., J. L. Fastook, J. S. Kite, M. R. Hyland, and T. V. Lowell. 1985. Models of glacial reconstruction and deglaciation applied to Maritime Canada and New England. In: H. W. Boms, Jr., P. LaSalle, and W. B. Thompson, Late Pleistocene history of northeastern New England and adjacent Quebec. Geological Society of America, Boulder, Colorado. https://doi.org/10.1130/SPE197-p139

Oldale, R. N. 1992. Cape Cod and islands: The geologic story. Parnassus Imprints, East Orleans, Massachusetts, 208 pp.

Thompson, W. B. 2014. Maine geologic facts and localities: Maine's eskers. Circular GFL-199, Maine Geological Survey Publications 490, 17 pp. PDF: http://digitalmaine.com/mgs_publications/490

Sevon, W. D., G. M. Fleeger, and V. C. Shepps. 1999. Pennsylvania and the Ice Age. Pennsylvania Geological Survey, Educational Series 6, 32 pp. 

von Engeln, O. D. 1988. The Finger Lakes region: Its origin and nature, revised ed. Cornell University Press, Ithaca, New York, 208 pp.

Websites

Glacial lakes, central Vermont (Department of Environmental Conservation, Vermont): https://dec.vermont.gov/geological-survey/vermont-geology/glaciallake

Energy

Books, articles, and reports

Books from the Paleontological Research Institution:

Duggan-Haas, D., R. M. Ross, and W. D. Allmon. 2013. The science beneath the surface: A very short guide to the Marcellus Shale. Paleontological Research Institution Special Publication 43, Ithaca, NY, 252 pp. PDF: https://www.priweb.org/science-education-programs-and-resources/the-marcellus-shale-the-science-beneath-the-surface

Other books, articles, and reports:

Blakemore, E. 2019. This mine fire has been burning for over 50 years. History, April 26, 2019. https://www.history.com/news/mine-fire-burning-more-50-years-ghost-town

Edmunds, W. E. 2002. Coal in Pennsylvania. Pennsylvania Geological Survey, Educational Series 7, 28 pp. PDF: https://www.paesta.psu.edu/sites/default/files/coal_in_pa_handbook.pdf

Websites

Anthracite coal mining region of northeastern Pennsylvania (Pennsylvania State University libraries): https://guides.libraries.psu.edu/anthracite

Centralia Mine Fire Resources (Pennsylvania Department of Environmental Protection): https://www.dep.pa.gov/Business/Land/Mining/AbandonedMineReclamation/AMLProgramInformation/Centralia/Pages/default.aspx

Coal mining in Pennsylvania: PA mining history (Pennsylvania Department of Environmental Protection): https://www.dep.pa.gov/Business/Land/Mining/Pages/PA-Mining-History.aspx

Mineral and energy resources (Maryland Geological Survey): http://www.mgs.md.gov/geology/minerals_energy_resources/index.html

Pittston in the age of coal and steam (City of Pittston, Pennsylvania): https://www.pittstoncity.org/pittston-age-coal-steam/

Short history of the evolution of Coal Hill (Mount Washington) (Brookline Connection by Clint Burton): https://www.brooklineconnection.com/history/Facts/CoalHill.html

Climate

Books, articles, and reports

Sugarman, P. 1998, Sea level rise in New Jersey. New Jersey Geological Survey Information Circular, Trenton, New Jersey, 2 pp. PDF: https://doi.org/doi:10.7282/T3JQ10Z7

Websites

 

Earth hazards

General Earth hazards

Websites

Earthquakes, Sinkholes and other Geohazards (Maryland Geological Survey): http://www.mgs.md.gov/geology/geohazards/index.html

Geologic hazards of Pennsylvania (Pennsylvania Department of Conservation & Natural Resources): https://www.dcnr.pa.gov/Geology/GeologicHazards/Pages/default.aspx

Geology and hazards (Vermont Department of Environmental Conservation): https://dec.vermont.gov/geological-survey/hazards

Hazards (Maine Geological Survey): https://www.maine.gov/dacf/mgs/hazards/index.shtml

Hazard reports, presentations and publications (Vermont Department of Environmental Conservation): https://dec.vermont.gov/geological-survey/publication-gis/hazrpt

Natural hazards (The Delaware Geological Survey): https://www.dgs.udel.edu/delaware-geology/natural-hazards

The Northeast States Emergency Consortium: https://nesec.org/

Planning for all hazards (Connecticut State Division of Emergency Management): https://portal.ct.gov/DEMHS/Emergency-Management/Resources-For-Officials/Planning-For-All-Hazards

Earthquakes

Books, articles, and reports

Domroski, D. R., Jr. 1998, revised 2005. Earthquake risk in New Jersey. New Jersey Geological Survey, 14 pp. https://www.state.nj.us/dep/njgs/enviroed/eqrisk.htm

Gale, M., and G. Springston. 1998. Earthquakes in Vermont. Vermont Geological Survey Educational Leaflet No. 1. PDF: https://dec.vermont.gov/sites/dec/files/geo/StatewidePubs/eduleaf1EQ.pdf

Kafka, A. L. 2000. Public misconceptions about faults and earthquakes in the eastern United States: Is it our own fault? Seismological Letters 71(3): 311–312. https://doi.org/10.1785/gssrl.71.3.311

Reger, J. P. 1987. Earthquakes and Maryland. Maryland Geological Survey, Baltimore, Maryland. http://www.mgs.md.gov/geology/geohazards/earthquakes_and_maryland.html

Sharnberger, C. K. 2003. Earthquake hazard in Pennsylvania. Pennsylvania Geological Survey Educational Series 10. 

Websites

New England Seismic Network: http://aki.bc.edu/

Karst & sinkholes

Kochanov, W. E. 1999. Sinkholes in Pennsylvania. Pennsylvania Geological Survey Educational Series 11. PDF: https://ei.lehigh.edu/envirosci/enviroissue/sinkholes/es11.pdf