Florence Bascom Geoscience Center
Publications
Latitudinal limits to the predicted increase of the peatland carbon sink with warming
The carbon sink potential of peatlands depends on the balance of carbon uptake by plants and microbial decomposition. The rates of both these processes will increase with warming but it remains unclear which will dominate the global peatland response. Here we examine the global relationship between peatland carbon accumulation rates during the...
Gallego-Sala, Angela; Charman, Dan; Brewer, Simon; Page, Sue; Prentice, I. Colin; Friedlingstein, Pierre; Moreton, Steve; Amesbury, Matthew; Beilman, David; Bjorck, Svante; Blyakharchuk, Tatiana; Bochicchio, Christopher; Booth, Robert K; Bunbury, Joan; Camill, Philip; Carless, Donna; Chimner, Rodney A.; Clifford, Michael; Cressey, Elizabeth; Courtney-Mustaphi, Colin; De Vleeschouwer, Francois; de Jong, Rixt; Fialkiawicz-Koziel, Barbara; Finkelstein, Sarah A; Garneau, Michelle; Githumbi, Esther N.; Hribjlan, John; Holmquist, James; Hughes, Paul; Jones, Chris D.; Jones, Miriam; Karofeld, Edgar; Klein, Eric S.; Kokfelt, Ulla; Korhola, Atte; Lacourse, Terri; LeRoux, Gael; Lamentowicz, Mariusz; Large, David ; Lavoie, Martin; Loisel, Julie; MacKay, Helen; MacDonald, Glen M.; Makila, Markku; Magnan, Gabriel; Marchant, R.; Marcisz, Katarzyna; Martinez-Cortizas, Antonio; Massa, Charly; Mathijssen, Paul; Mauquoy, Dmitri; Mighall, Timothy; Mitchell, Fraser J.G.; Moss, Patrick; Nichols, J.; Oksanen, P.O.; Orme, L.; Packalen, Maara S.; Robinson, Stephen; Roland, Thomas P.; Sanderson, Nicole K.; Sannel, A.B.K.; Silva-Sanchez, Noemi; Steinberg, Natasha; Swindles, Graeme T.; Turner, T. Edward; Uglow, Joanna; Valiranta, M.; van Bellen, Simon; van der Linden, Marjolein; Wang, Guoping; Yu, Zicheng; Zaragoza-Castells, Joana; Zhao, Yan Geologic map of the Timberville quadrangle, Virginia
This map of the Timberville 7.5-minute quadrangle in Rockingham and Shenandoah counties, Virginia shows the distribution of Paleozoic-age sedimentary rocks in map and cross-section. Surficial deposits including alluvium and colluvium are also shown. The characteristics of each map unit are described and a brief report discusses the stratigraphy,...
Heller, Matthew J.; Orndorff, Randall C.; Hubbard, David A.; Rader, Eugene K.
Divisions of geologic time—Major chronostratigraphic and geochronologic units
IntroductionEffective communication in the geosciences requires a consistent nomenclature for stratigraphic units and, especially, for divisions of geologic time. A geologic time scale is composed of standard stratigraphic divisions based on rock sequences and is calibrated in years.Geologists from the U.S. Geological Survey (USGS), State...
Geologic map of the Hayfield quadrangle, Frederick County, Virginia
The Hayfield 7.5-minute quadrangle is located within the Valley and Ridge physiographic province of northern Virginia. The quadrangle includes the topographical lowland area of the northern Great Valley to the southeast, the narrow ridge of Little North Mountain along the western edge of the Great Valley, and the broad region of elongated valleys...
Doctor, Daniel H.; Parker, Ronald A. Icebergs in the Nordic Seas throughout the Late Pliocene
The Arctic cryosphere is changing and making a significant contribution to sea level rise. The Late Pliocene had similar CO2 levels to the present and a warming comparable to model predictions for the end of this century. However, the state of the Arctic cryosphere during the Pliocene remains poorly constrained. For the first time we combine...
Smith, Yvonne M.; Hill, Daniel; Dolan, Aisling M; Haywood, Alan M; Dowsett, Harry J.; Risebrobakken, Bjorg
Bedrock geologic map of the Littleton and Lower Waterford quadrangles, Essex and Caledonia Counties, Vermont, and Grafton County, New Hampshire
The bedrock geologic map of the Littleton and Lower Waterford quadrangles covers an area of approximately 107 square miles (277 square kilometers) north and south of the Connecticut River in east-central Vermont and adjacent New Hampshire. This map was created as part of a larger effort to produce a new bedrock geologic map of Vermont through the...
Rankin, Douglas W.
Preliminary geologic framework developed for a proposed environmental monitoring study of a deep, unconventional Marcellus Shale drill site, Washington County, Pennsylvania
BackgroundIn the fall of 2011, the U.S. Geological Survey (USGS) was afforded an opportunity to participate in an environmental monitoring study of the potential impacts of a deep, unconventional Marcellus Shale hydraulic fracturing site. The drill site of the prospective case study is the “Range Resources MCC Partners L.P. Units 1-5H” location (...
Stamm, Robert G. Carboniferous climate teleconnections archived in coupled bioapatite δ18OPO4 and 87Sr/86Sr records from the epicontinental Donets Basin, Ukraine
Reconstructions of paleo-seawater chemistry are largely inferred from biogenic records of epicontinental seas. Recent studies provide considerable evidence for large-scale spatial and temporal variability in the environmental dynamics of these semi-restricted seas that leads to the decoupling of epicontinental isotopic records from those of the...
Montanez, Isabel P.; Osleger, Dillon J.; Chen, J.-H.; Wortham, Barbara E.; Stamm, Robert G.; Nemyrovska, Tamara I.; Griffin, Julie M.; Poletaev, Vladislav I.; Wardlaw, Bruce R.
Bedrock geologic map of the Lisbon quadrangle, and parts of the Sugar Hill and East Haverhill quadrangles, Grafton County, New Hampshire
The bedrock geologic map of the Lisbon quadrangle, and parts of the Sugar Hill and East Haverhill quadrangles, Grafton County, New Hampshire, covers an area of approximately 73 square miles (189 square kilometers) in west-central New Hampshire. This map was created as part of a larger effort to produce a new bedrock geologic map of Vermont through...
Rankin, Douglas W.
Bedrock geologic map of the Miles Pond and Concord quadrangles, Essex and Caledonia Counties, Vermont, and Grafton County, New Hampshire
The bedrock geologic map of the Miles Pond and Concord quadrangles covers an area of approximately 107 square miles (276 square kilometers) in east-central Vermont and adjacent New Hampshire, north of and along the Connecticut River. This map was created as part of a larger effort to produce a new bedrock geologic map of Vermont through the...
Rankin, Douglas W. A North American Hydroclimate Synthesis (NAHS) of the Common Era
This study presents a synthesis of century-scale hydroclimate variations in North America for the Common Era (last 2000 years) using new age models of previously published multiple proxy-based paleoclimate data. This North American Hydroclimate Synthesis (NAHS) examines regional hydroclimate patterns and related environmental indicators,...
Rodysill, Jessica R. ; Anderson, Lesleigh; Cronin, Thomas M.; Jones, Miriam C.; Thompson, Robert S.; Wahl, David B.; Willard, Debra A.; Addison, Jason A.; Alder, Jay R.; Anderson, Katherine H.; Anderson, Lysanna; Barron, John A.; Bernhardt, Christopher E.; Hostetler, Steven W.; Kehrwald, Natalie M.; Khan, Nicole; Richey, Julie N.; Starratt, Scott W.; Strickland, Laura E.; Toomey, Michael; Treat, Claire C.; Wingard, G. Lynn
Sea surface temperature estimates for the mid-Piacenzian Indian Ocean—Ocean Drilling Program sites 709, 716, 722, 754, 757, 758, and 763
Despite the wealth of global paleoclimate data available for the warm period in the middle of the Piacenzian Stage of the Pliocene Epoch (about 3.3 to 3.0 million years ago [Ma]; Dowsett and others, 2013, and references therein), the Indian Ocean has remained a region of sparse geographic coverage in terms of microfossil analysis. In an effort to...
Robinson, Marci M.; Dowsett, Harry J.; Stoll, Danielle K.