Publications
Filter Total Items: 934
Abandonment of the Upper Devonian Greenland Gap Group and Scherr Formation and revision of the Upper Devonian Brallier and Foreknobs Formations in the central Valley and Ridge Province Abandonment of the Upper Devonian Greenland Gap Group and Scherr Formation and revision of the Upper Devonian Brallier and Foreknobs Formations in the central Valley and Ridge Province
This study revises the lithostratigraphic framework of the Upper Devonian interval traditionally assigned to the Greenland Gap Group across the central Appalachian Valley and Ridge Province. The work aims to modernize and standardize lithostratigraphic nomenclature, establish a new reference section and demonstrate how the revised stratigraphy improves edge-matching of 1:24,000 scale...
Authors
Alan D. Pitts, Daniel H. Doctor
Report 17—Revisions to the articles of organization and procedure of the Commission on Stratigraphic Nomenclature of the Americas Report 17—Revisions to the articles of organization and procedure of the Commission on Stratigraphic Nomenclature of the Americas
Several revisions to the Articles of Organization and Procedure for the North American Commission on Stratigraphic Nomenclature have been adopted following the 75th, 79th, and 80th annual meetings of the Commission in 2020, 2024 and 2025, respectively. Of these, the most substantial change was revision of Article III regarding membership composition of the Commission and the addition of...
Authors
Lynn T. Dafoe, Robert B. MacNaughton, Marie-Pierre Aubry, Carlton E. Brett, James R. Lehane, Fernando Núñez-Useche, Randall C. Orndorff, Frank Brunton, Lucy E. Edwards, Richard H. Fluegeman, Howard Harper, R. Matthew Joeckel, Norman P. Lasca, B.H. Tew
Terrestrial ecosystem response to changing temperature and seasonality in the Paleocene-Eocene Thermal Maximum: Shallow marine records from the Salisbury Embayment, USA Terrestrial ecosystem response to changing temperature and seasonality in the Paleocene-Eocene Thermal Maximum: Shallow marine records from the Salisbury Embayment, USA
The Paleocene-Eocene thermal maximum (PETM, ∼56 Ma) is marked by a massive and rapid rise in atmospheric CO2 and ∼5°C of global warming. It is globally characterized by a negative carbon isotope excursion (CIE), and, at least locally, is preceded by a pre-onset excursion (POE). We present palynological and bioclimatic analyses from stratigraphically expanded marginal marine sediment...
Authors
Debra A. Willard, Mei Nelissen, Appy Sluijs, Henk Brinkhuis, Tammo Reichgelt, Marci M. Robinson, Jean Self-Trail
Tidal forested wetlands can be incorporated into blue carbon conservation and restoration strategies Tidal forested wetlands can be incorporated into blue carbon conservation and restoration strategies
Purpose of Review
Authors
Daniel A. Friess, Maria F. Adame, Jeffrey Kelleway, Ken W. Krauss, Gregory B. Noe
Preliminary bedrock geologic map of the Port Henry quadrangle, Essex County, New York, and Addison County, Vermont Preliminary bedrock geologic map of the Port Henry quadrangle, Essex County, New York, and Addison County, Vermont
Authors
Peter M. Valley, Mercer Parker, Gregory J. Walsh, Randall C. Orndorff, Matt S. Walton, E. Allen Crider,
Extreme Potomac floods at Washington D.C. during the past 500 years Extreme Potomac floods at Washington D.C. during the past 500 years
Washington D.C. faces one of the highest 100-year flood risks of any major city along the U.S. East Coast. In addition to storm-surge inundation during hurricanes and nor'easters, water-level observations for Washington are strongly skewed by major floods on the Potomac River. Using geologic and historic records we find new evidence for ice-jam flooding at Georgetown during the Little...
Authors
Michael Toomey, Thomas M. Cronin, Jessica R. Rodysill, Julia Lynn Seidenstein, Debra A. Willard
Widespread terrestrial ecosystem disruption at the onset of the Paleocene–Eocene Thermal Maximum Widespread terrestrial ecosystem disruption at the onset of the Paleocene–Eocene Thermal Maximum
The Paleocene–Eocene Thermal Maximum (PETM, ~56 Mya) interval was marked by massive 13C-depleted carbon emissions into the ocean/atmosphere system, manifested as a negative carbon isotope excursion (CIE) in sedimentary components, and ~5 °C global average warming. Episodes of hydrological perturbations and soil-erosion have been widely documented for the PETM but their link with...
Authors
Mei Nelissen, Debra A. Willard, Han Konijnenburg-van Cittert, Gabriel J. Bowen, Teuntje Hollaar, Appy Sluijs, Joost Frieling, Henk Brinkhuis
Early Pliocene (Zanclean) sea surface temperature for PlioMIP3 Early Pliocene (Zanclean) sea surface temperature for PlioMIP3
Paleoclimate researchers have been comparing Pliocene environmental data to paleoclimate model results since the 1980s. The Pliocene Model Intercomparison Project (PlioMIP) began in 2008 with a focus on the Late Pliocene. Here we assess the availability and utility of sea surface temperature (SST) data for verification of Pliocene Model Intercomparison Project (PlioMIP3) Early Pliocene...
Authors
Harry J. Dowsett, Kevin M. Foley
East Greenland Ice Sheet retreat history from Scoresby Sund and Storstrømmen Glacier during the last deglaciation East Greenland Ice Sheet retreat history from Scoresby Sund and Storstrømmen Glacier during the last deglaciation
The lack of geological constraints on past ice-sheet change in marine-based sectors of the Greenland Ice Sheet (GrIS) following the Last Glacial Maximum limits our ability to assess (1) the drivers of ice-sheet change, and (2) the performance of ice-sheet models that are benchmarked against the paleo-record of GrIS change. Here, we provide new in situ 10Be surface exposure chronologies...
Authors
Jacob T. Anderson, Nicolas E. Young, Allie Balter-Kennedy, Karlee Prince, Caleb K. Walcott-George, Brandon L. Graham, Joanna Charton, Jason P. Briner, Joerg M. Shaefer
Cosmic dust reveals dynamic shifts in central Arctic sea-ice coverage over the past 30,000 years Cosmic dust reveals dynamic shifts in central Arctic sea-ice coverage over the past 30,000 years
Arctic sea-ice loss affects biological productivity, sustenance in coastal communities, and geopolitics. Forecasting these impacts requires mechanistic understanding of how Arctic sea ice responds to climate change, but this is limited by scarce long-term records. We present continuous 30,000-year reconstructions of sea-ice coverage from the Arctic Ocean based on measurements of two...
Authors
Frank J. Pavia, Jesse Farmer, Laura Gemery, Thomas M. Cronin, Jonathan Treffkorn, Kenneth A. Farley