Unified Interior Regions

Region 1: North Atlantic-Appalachian

Our Science Centers

Our Science Centers

The NAA Region has 15 Science Centers spanning 14 NE States and Washington, DC. The Centers conduct interdisciplinary biologic, geologic, hydrologic, and energy monitoring and research addressing natural resource issues facing our nation.

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July Photo Contest

July Photo Contest

Check out the winning photographs in the July 2021 Photo Contest! Categories include People, USGS at Work, Where We Work, and Honorable Mention

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Regions L2 Landing Page Tabs

Filter Total Items: 16,125
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Year Published: 2015

Use of historic Persian water system data in groundwater models: Examples from Afghanistan and Emirates

Obtaining calibration data for models depicting conditions during pre-development periods can be challenging as such periods are characteristically data poor. This study presents two examples where simulation of historic water conveyance structures were used to help characterize historic, or pre-modern, conditions in calibration of groundwater...

Mack, Thomas J.; Eggleston, Jack R.

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Year Published: 2015

Gondolellid conodonts and depositional setting of the Phosphoria Formation

The Phosphoria Formation and related rocks were deposited over an 8.9 m.y. interval beginning approximately 274.0Ma and ending approximately 265.1Ma. The Meade Peak Phosphatic Shale Member was deposited in southeastern Idaho and adjacent Wyoming over 5.4 m.y. from approximately 273.2 to 268.6 Ma. The Retort Phosphatic Shale Member was deposited in...

Wardlaw, Bruce R.
Wardlaw, Bruce R. Gondolellid conodonts and depositional setting of the Phosphoria Formation Micropaleontology;2015, Vol. 61 Issue 4/5, p335

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Year Published: 2015

Life on the edge in eastern Alaska: Basal Ordovician(Tremadocian), platform-margin faunas of the Jones Ridge Formation

As the most fossiliferous and least deformed succession of unequivocally Laurentian lower Paleozoic strata in Alaska, the Jones Ridge Limestone has provided critical data for numerous stratigraphic studies (e. g. Palmer 1968; Harris et al. 1995; Dumoulin et al. 2002; Dumoulin and Harris 2012) focused on the Cambrian and Ordovician of northwestern...

Taylor, J. F.; Allen, T. J.; Repetski, John E.; Strauss, J. V.; Irwin, S. J.
Stratigraphy, 2015, v. 12(2), p. 70-77

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Year Published: 2015

Spatiotemporal analysis of gene flow in Chesapeake Bay Diamondback Terrapins (Malaclemys terrapin)

There is widespread concern regarding the impacts of anthropogenic activities on connectivity among populations of plants and animals, and understanding how contemporary and historical processes shape metapopulation dynamics is crucial for setting appropriate conservation targets. We used genetic data to identify population clusters and quantify...

Converse, Paul E.; Kuchta, Shawn R; Roosenburg, Willem R; Henry, Paula F. P.; Haramis, G. Michael; King, Tim L.
Converse, P. E., Kuchta, S. R., Roosenburg, W. M., Henry, P. F. P, Haramis, G. M., and King, T. L., 2015, Spatiotemporal analysis of gene flow in Chesapeake Bay Diamondback Terrapins (Malaclemys terrapin): Molecular Ecology, v. 24, p. 5864-5876.

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Year Published: 2015

The cost of karst subsidence and sinkhole collapse in the United States compared with other natural hazards

Rocks with potential for karst formation are found in all 50 states. Damage due to karst subsidence and sinkhole collapse is a natural hazard of national scope. Repair of damage to buildings, highways, and other infrastructure represents a significant national cost. Sparse and incomplete data show that the average cost of karst-related damages in...

Weary, David J.

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Year Published: 2015

Organic amendments for risk mitigation of organochlorine pesticide residues in old orchard soils

Performance of compost and biochar amendments for in situ risk mitigation of aged DDT, DDE and dieldrin residues in an old orchard soil was examined. The change in bioavailability of pesticide residues to Lumbricus terrestris L. relative to the unamended control soil was assessed using 4-L soil microcosms with and without plant cover in a 48-day...

Centofantia, Tiziana; McConnell, Laura L.; Chaney, Rufus L.; Beyer, W. Nelson; Andradea, Natasha A.; Hapeman, Cathleen J.; Torrents, Alba; Nguyen, Anh; Anderson, Marya O.; Novak, J. M.; Jackson, Dana
Centofanti, T., McConnell, L. L., Chaney, R. L., Beyer, N. W., Andrade, N. A., Hapeman, C. J., Torrents, A., Nguyen, A., Anderson, M. O., Novak, J. M., and Jackson, D., 2016, Organic amendments for risk mitigation of organochlorine pesticide residues in old orchard soils: Environmental Pollution, v. 210, p. 182-191.

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Year Published: 2015

Identification of groundwater nitrate contamination from explosives used in road construction: Isotopic, chemical, and hydrologic evidence

Explosives used in construction have been implicated as sources of NO3– contamination in groundwater, but direct forensic evidence is limited. Identification of blasting-related NO3– can be complicated by other NO3– sources, including agriculture and wastewater disposal, and by hydrogeologic factors affecting NO3...

Degnan, James R.; Böhlke, John Karl; Pelham, Krystle; David M. Langlais; Walsh, Gregory
Degnan, J.R., , Böhlke, J.K., Pelham, K., Langlais, D.M., and Walsh, G.J., Identification of groundwater nitrate contamination from explosives used in road construction: Isotopic, chemical, and hydrologic evidence, Environmental Science and Technology, December 28, 2015.

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Year Published: 2015

An apparatus reconstruction of the conodont Caenodontus serrulatus Behnken 1975

The conodont species Caenodontus serrulatus Behnken is a rare coniform element first described in 1975 from Guadalupian strata exposed in the Guadalupe and Delaware Mountains of West Texas. Because it is rare, coniform, and occurs long after most coniform elements supposedly disappeared, it has been hauntingly mysterious. Based on new material...

Nestell, Merlynd K.; Wardlaw, Bruce R.
Nestell, M.K., and Wardlaw, B.R., 2015, An apparatus reconstruction of the conodont Caenodontus serrulatus Behnken 1975: Micropaleontology, v. 61, no. 4-5, p. 293-300.

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Year Published: 2015

Surficial geology and shaded seafloor relief of Georges Bank, Fundian Channel and Northeast Channel, Gulf of Maine

Georges Bank is a shallow submarine bank that lies south of Nova Scotia and east of Cape Cod and bounds the seaward side of the Gulf of Maine. The international boundary between Canada and the United States transects the bank, and the eastern part of the bank (~7500 square kilometres) lies in Canadian territory. This map shows the surficial...

Todd, B.J.; Valentine, Page C.
T odd, B.J. and V alentine, P .C., 2015. Surficial geolog y and shaded seafloor relief of G eorg es Bank, Fundian Channel, and Northeast Channel, Gulf of Maine; Geological Survey of Canada, Open File 7657, scale 1:50 000. doi:10.4095/296975

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Year Published: 2015

Simulated responses of streams and ponds to groundwater withdrawals and wastewater return flows in southeastern Massachusetts

Water use, such as withdrawals, wastewater return flows, and interbasin transfers, can alter streamflow regimes, water quality, and the integrity of aquatic habitat and affect the availability of water for human and ecosystem needs. To provide the information needed to determine alteration of streamflows and pond water levels in southeastern...

Carlson, Carl S.; Walter, Donald A.; Barbaro, Jeffrey R.
Carlson, C.S., Walter, D.A., and Barbaro, J.R., 2015, Simulated responses of streams and ponds to groundwater withdrawals and wastewater return flows in southeastern Massachusetts: U.S. Geological Survey Scientific Investigations Report 2015–5168, 60 p., http://dx.doi.org/10.3133/sir20155168.

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Year Published: 2015

A hidden view of wildlife conservation: How camera traps aid science, research and management

Florida panthers are among the world’s most endangered — and elusive — animals. For approximately four decades, scientists have been researching this small population of panthers that inhabit the dense forests and swamps of south Florida. Because of their wide habitat range along with an absence of clear visual features, these...

O'Connell, Allan F.
O'Connell, A. F., 2015, A hidden view of wildlife conservation: How camera traps aid science, research and management: Wildlife Professional, v. 9, no. 3, p. 56-59.

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Year Published: 2015

Coastal landforms and processes at the Cape Cod National Seashore, Massachusetts—A primer

Anyone who spends more than a few days on Cape Cod (the Cape) quickly becomes a coastal geologist, quickly learning the rhythms of daily tides and the seasonal cycles of beaches growing and being swept away by storms; swimmers and surfers track how the breakers appear, and dog-walkers notice the hard-packed sand blanketed overnight by an airy...

Giese, Graham S.; Williams, S. Jeffress; Adams, Mark
Giese, G.S., Williams, S.J., and Adams, Mark, 2015, Coastal landforms and processes at the Cape Cod National Seashore, Massachusetts—A primer: U.S. Geological Survey Circular 1417, 86 p., http://dx.doi.org/10.3133/cir1417.