Publications
Filter Total Items: 879
Morphotypical and geochemical variations of planktic foraminiferal species in Siberian and Central Arctic Ocean core tops Morphotypical and geochemical variations of planktic foraminiferal species in Siberian and Central Arctic Ocean core tops
In this work, we utilize a transect of core top, mid- to late Holocene, sediments from the Eastern Siberian Sea to the central Arctic Ocean, spanning gradients in upper-ocean water column properties, to examine regional planktic foraminiferal species abundances and geochemistry. We present species- and morphotype-specific foraminiferal assemblages at these sites and stable isotope...
Authors
Maya Prabhakar, Kaustubh Thirumalai, Thomas Cronin, Laura Gemery, Elizabeth Thomas, Patrick Rafter
Microfossils and biostratigraphy of the Upper Cretaceous Coon Creek Formation Lagerstätte, Mississippi Embayment, USA Microfossils and biostratigraphy of the Upper Cretaceous Coon Creek Formation Lagerstätte, Mississippi Embayment, USA
The Upper Cretaceous Coon Creek Formation type-locality in McNairy County, Tennessee, is an exceptional marine invertebrate Lagerstätte that was deposited in a nearshore reentrant into the ancestral continent of Appalachia. Extensive taxonomic analysis of the macrofauna has been done for over 100 years. However, documentation of the microfossil component at the type-locality has largely...
Authors
Jean Self-Trail, Kristina Gardner, Jennifer O’Keefe, Patricia Mason, Mark Puckett, Michael Gibson, Maeve McCarty
Designation of a composite-stratotype section for the lower Paleocene (Danian) Brightseat Formation in Prince George’s County, Maryland, U.S.A. Designation of a composite-stratotype section for the lower Paleocene (Danian) Brightseat Formation in Prince George’s County, Maryland, U.S.A.
The lower Paleocene (Danian) Brightseat Formation consists of fine-grained, dark-gray, micaceous sand and silty clay, with glauconite and abundant, but generally poorly preserved, fossils. The Brightseat Formation represents deposition of lower, but not lowermost, Paleocene sediments that were deposited on the middle to outer shelf of what is now the Atlantic Coastal Plain. A basal...
Authors
Jean Self-Trail, Mercer Parker, David Govoni, Laurel Bybell, Kristina Gardner, Gregory S. Gohn
Artisanal mining river dredge detection using SAR: A method comparison Artisanal mining river dredge detection using SAR: A method comparison
Challenges exist in monitoring artisanal and small-scale mining (ASM) activities, given their dynamic and often informal nature. ASM takes form through various techniques and scales, including riverine dredging, which often targets the abundant alluvial gold deposits in South America. Remote sensing offers a solution to improve data collection, regulation, and monitoring of the more...
Authors
Marissa Alessi, Peter Chirico, Marco Millones
Pliocene Model Intercomparison Project Phase 3 (PlioMIP3) – Science plan and experimental design Pliocene Model Intercomparison Project Phase 3 (PlioMIP3) – Science plan and experimental design
The Pliocene Model Intercomparison Project (PlioMIP) was initiated in 2008. Over two phases PlioMIP has helped co-ordinate the experimental design and publication strategy of the community, which has included an increasing number of climate models and modelling groups from around the world. It has engaged with palaeoenvironmental scientists to foster new data synthesis supporting the...
Authors
Alan Haywood, Julia Tindall, Lauren Burton, M.A. Chandler, Aisling Dolan, Harry J. Dowsett, R. Feng, Tamara Fletcher, Kevin Foley, Daniel Hill, Stephen Hunter, B. Otto-Bliesner, D.J. Lunt, Marci M. Robinson, U. Salzmann
Mapping the middle and upper Devonian marine-nonmarine transition in the Appalachian Basin from West Virginia to New York. Mapping the middle and upper Devonian marine-nonmarine transition in the Appalachian Basin from West Virginia to New York.
No abstract available.
Authors
Daniel Doctor, Alan D Pitts
Mapping closed depressions in the karst region of northwest Puerto Rico using lidar-derived elevation data obtained in 2018 after Hurricane Maria Mapping closed depressions in the karst region of northwest Puerto Rico using lidar-derived elevation data obtained in 2018 after Hurricane Maria
Identifying and analyzing closed depressions in karst areas is important for sinkhole hazard evaluation and land management. We created a sinkhole inventory in the karst region of northwest Puerto Rico using a lidar-derived elevation model acquired in 2018 approximately eleven months after Hurricane Maria. The goal of this project is to develop a geodatabase of sinkhole feature classes...
Authors
Lillian G. Smith, Daniel Doctor, Cheyenne L. Cox
Insights into glendonite formation from the upper Oligocene Sagavanirktok Formation, North Slope, Alaska Insights into glendonite formation from the upper Oligocene Sagavanirktok Formation, North Slope, Alaska
The type locality for the upper Oligocene Nuwok Member of the Sagavanirktok Formation (Carter Creek, North Slope, Alaska, USA) contains abundant occurrence of glendonite, a pseudomorph after the calcium carbonate mineral ikaite, which typically forms in the shallow subsurface of cold marine sediments. The region during the time of Nuwok Member deposition was located at a high latitude...
Authors
John Counts, Madeleine Vickers, Martha Stokes, Whittney Spivey, Kristina Gardner, Jean Self-Trail, Jared Gooley, Ryan McAleer, Aaron M. Jubb, David Houseknecht, Richard Lease, Neil Griffis, Martin Vickers, Kasia Sliwinska, Hannah Tompkins, Adam Hudson
Practical guide to measuring wetland carbon pools and fluxes Practical guide to measuring wetland carbon pools and fluxes
Wetlands cover a small portion of the world, but have disproportionate influence on global carbon (C) sequestration, carbon dioxide and methane emissions, and aquatic C fluxes. However, the underlying biogeochemical processes that affect wetland C pools and fluxes are complex and dynamic, making measurements of wetland C challenging. Over decades of research, many observational...
Authors
Sheel Bansal, Irena F. Creed, Brian Tangen, Scott Bridgham, Ankur Desai, Ken Krauss, Scott Neubauer, Gregory Noe, Donald Rosenberry, Carl Trettin, Kimberly Wickland, Scott Allen, Ariane Arias-Ortiz, Anna Armitage, Dennis Baldocchi, Kakoli Banerjee, David Bastviken, Peter Berg, Matthew Bogard, Alex Chow, William Conner, Christopher Craft, Courtney Creamer, Tonya Delsontro, Jamie Duberstein, Meagan Eagle, M. Fennessey, Sarah Finkelstein, Mathias Goeckede, Sabine Grunwald, Meghan Halibisky, Ellen Herbert, Mohammad Jahangir, Olivia Johnson, Miriam Jones, Jeffrey Kelleway, Sarah Knox, Kevin Kroeger, Kevin Kuehn, David Lobb, Amanda Loder, Shizhou Ma, Damien Maher, Gavin McNicol, Jacob Meier, Beth Middleton, Christopher Mills, Purbasha Mistry, Abhijith Mitra, Courtney Mobilian, Amanda Nahlik, Sue Newman, Jessica O’Connell, Patty Oikawa, Max Post van der Burg, Charles Schutte, Chanchung Song, Camille Stagg, Jessica Turner, Rodrigo Vargas, Mark Waldrop, Markus Wallin, Zhaohui Wang, Eric Ward, Debra A. Willard, Stephanie Yarwood, Xiaoyan Zhu
By
Ecosystems Mission Area, Water Resources Mission Area, Ecosystems Land Change Science Program, Florence Bascom Geoscience Center, Geology, Minerals, Energy, and Geophysics Science Center, Geosciences and Environmental Change Science Center, Northern Prairie Wildlife Research Center, Wetland and Aquatic Research Center , Woods Hole Coastal and Marine Science Center
Geology of the Mount Rogers area, revisited: Evidence of Neoproterozoic continental rifting, glaciation, and the opening and closing of the Iapetus Ocean, Blue Ridge, VA–NC–TN Geology of the Mount Rogers area, revisited: Evidence of Neoproterozoic continental rifting, glaciation, and the opening and closing of the Iapetus Ocean, Blue Ridge, VA–NC–TN
Recent field and geochronological studies in eight 7.5-minute quadrangles near Mount Rogers in Virginia, North Carolina and Tennessee recognize (1) important stratigraphic and structural relationships for the Neoproterozoic Mount Rogers and Konnarock Formations, and the northeast end of the Mountain City window; (2) the separation of Mesoproterozoic rocks of the Blue Ridge into three age...
Authors
Arthur Merschat, Ryan McAleer, Christopher S. Holm-Denoma, C. Southworth
Preliminary map of the surface rupture from the August 9, 2020, Mw 5.1 earthquake near Sparta, North Carolina—The Little River fault and other possible coseismic features Preliminary map of the surface rupture from the August 9, 2020, Mw 5.1 earthquake near Sparta, North Carolina—The Little River fault and other possible coseismic features
This publication is a preliminary map and geodatabase of the coseismic surface rupture and other coseismic features generated from the August 9, 2020, Mw 5.1 earthquake near Sparta, North Carolina. Geologic mapping facilitated by analysis of post-earthquake quality level 0 to 1 lidar, document the coseismic surface rupture, named the Little River fault, and other coseismic features. The...
Authors
Arthur Merschat, Mark Carter
Implementation plan of the National Cooperative Geologic Mapping Program strategy—Northeast region of the United States: New York and New England Implementation plan of the National Cooperative Geologic Mapping Program strategy—Northeast region of the United States: New York and New England
Complexly deformed igneous, metamorphic, and sedimentary rocks form the bedrock of the Northeast region of the United States. Variably thick unconsolidated sediments deposited by glacial, fluvial, and eolian systems locally cover the bedrock. New geologic mapping focuses on areas lacking modern, detailed studies or syntheses, and contributes to existing framework research. This report...
Authors
Gregory J. Walsh, Margaret A. Thomas, Robert Marvinney, Stephen Mabee, Frederick Chormann, Andrew Kozlowski, Marjorie H. Gale, Jon Kim, Brian Savage