Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16783
Spatio-temporal development of vegetation die-off in a submerging coastal marsh
In several places around the world, coastal marsh vegetation is converting to open water through the formation of pools. This is concerning, as vegetation die-off is expected to reduce the marshes' capacity to adapt to sea level rise by vegetation-induced sediment accretion. Quantitative analyses of the spatial and temporal development of marsh vegetation die-off are scarce, although these are nee
Authors
Lennert Schepers, Matthew Kirwan, Glenn R. Guntenspergen, Stijn Temmerman
Geology and biostratigraphy of the Potomac River cliffs at Stratford Hall, Westmoreland County, Virginia
The cliffs along the Potomac River at Stratford Hall display extensive exposures of Miocene marine strata that belong successively to the Calvert, Choptank, St. Marys, and Eastover Formations. Within the lower part of this sequence, in the Calvert and Choptank Formations, there is well-developed cyclic stratigraphy. Above the Miocene units lies the marginal marine to deltaic Pleistocene Bacons Cas
Authors
Robert E. Weems, Lucy E. Edwards, Bryan D. Landacre
Post-rift magmatic evolution of the eastern North American “passive-aggressive” margin
Understanding the evolution of passive margins requires knowledge of temporal and chemical constraints on magmatism following the transition from supercontinent to rifting, to post-rifting evolution. The Eastern North American Margin (ENAM) is an ideal study location as several magmatic pulses occurred in the 200 My following rifting. In particular, the Virginia-West Virginia region of the ENAM ha
Authors
Sarah E. Mazza, Esteban Gazel, Elizabeth A. Johnson, Michael Bizmis, Ryan J. McAleer, C. Berk Biryol
Arsenic hazard and associated health risks: New England, USA aquifers
No abstract available.
Authors
Joseph D. Ayotte
Geology of the Petersburg batholith, eastern Piedmont, Virginia
The 295-300 Ma Petersburg batholith in east-central Virginia forms one of the largest and northernmost of the Alleghanian plutonic complexes in the southern Appalachian Piedmont. The batholith is primarily composed of granite including massive and foliated (both magmatic and solid-state fabrics) varieties. The plutonic complex intruded medium-grade metamorphosed volcanic/plutonic rocks of the Roan
Authors
Brent E. Owens, Mark W. Carter, Christopher M. Bailey
Geology along the Blue Ridge Parkway in Virginia
Detailed geologic mapping and new SHRIMP (sensitive high-resolution ion microprobe) U-Pb zircon, Ar/Ar, Lu-Hf, 14C, luminescence (optically stimulated), thermochronology (fission-track), and palynology reveal the complex Mesoproterozoic to Quaternary geology along the ~350 km length of the Blue Ridge Parkway in Virginia. Traversing the boundary of the central and southern Appalachians, rocks along
Authors
Mark W. Carter, C. Scott Southworth, Richard P. Tollo, Arthur J. Merschat, Sara Wagner, Ava Lazor, John N. Aleinikoff
Dissolution of fluorapatite by Pseudomonas fluorescens P35 resulting in fluorine release
Chemical weathering of fluorine-bearing minerals is widely accepted as the main mechanism for the release of fluorine (F) to groundwater. Here, we propose a potential mechanism of F release via microbial dissolution of fluorapatite (Ca5(PO4)3F), which has been neglected previously. Batch culture experiments were conducted at 30°C with a phosphate-solubilizing bacteria strain, Pseudomonas fluoresce
Authors
Jianping Zhou, Hongmei Wang, Charles A. Cravotta, Qiang Dong, Xing Xiang
Trends in methyl tert-butyl ether concentrations in private wells in southeast New Hampshire: 2005 to 2015
In southeast New Hampshire, where reformulated gasoline was used from the 1990s to 2007, methyl tert-butyl ether (MtBE) concentrations ≥0.2 μg/L were found in water from 26.7% of 195 domestic wells sampled in 2005. Ten years later in 2015, and eight years after MtBE was banned, 10.3% continue to have MtBE. Most wells (140 of 195) had no MtBE detections (concentrations <0.2 μg/L) in 2005 and 2015.
Authors
Sarah Flanagan, Joseph P. Levitt, Joseph D. Ayotte
Protocol and results from the first season of captive-rearing whooping cranes for a non-migratory release in Louisiana
No abstract available
Authors
Glenn H. Olsen, Jane N. Chandler
Thiamine and lipid utilization in fasting Chinook salmon
A laboratory study was conducted to estimate utilization rates of thiamine (vitamin B1) and lipid in whole fish, muscle, and liver tissues of fasting Chinook salmon (Oncorhynchus tshawytscha). The experiment was conducted with Chinook salmon held at 5ºC over a period of 150 days to simulate fasting during migration or overwintering. Chinook salmon body length and wet weight did not change (p > 0.0
Authors
Dale C. Honeyfield, A. K. Peters, Michael L. Jones
A special issue devoted to proterozoic iron oxide-apatite (±REE) and iron oxide copper-gold and affiliated deposits of Southeast Missouri, USA, and the Great Bear Magmatic Zone, Northwest Territories, Canada: Preface
No abstract available.
Authors
John F. Slack, L. Corriveau, M.W. Hitzman
A simple rubric for Stratigraphic Fidelity (β) of paleoenvironmental time series
The Pliocene, specifically the late Pliocene, has been a focus of paleoclimate research formore than 25 years. Synoptic regional
and global reconstructions along with high-resolution time-series have produced nuanced conceptual models of paleoenvironmental
conditions and enhanced our understanding of climate variability and climate sensitivity from the Late Pliocene, the most
recent interval of gl
Authors
Harry J. Dowsett, Marci M. Robinson, Kevin M. Foley