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Geospatial datasets of seabed topography, sediment mobility, and the distribution of geologic substrates in quadrangle 3 of the Stellwagen Bank National Marine Sanctuary region offshore of Boston, Massachusetts Geospatial datasets of seabed topography, sediment mobility, and the distribution of geologic substrates in quadrangle 3 of the Stellwagen Bank National Marine Sanctuary region offshore of Boston, Massachusetts
The U.S. Geological Survey (USGS), in cooperation with the National Marine Sanctuary Program of the National Oceanic and Atmospheric Administration (NOAA), has conducted seabed mapping and related research in the Stellwagen Bank National Marine Sanctuary (SBNMS) region since 1993. The interpretive datasets and source information presented here are for quadrangle 3, which is one of 18...
A Generalized Hydrologic Stream Network (GenNet) of the Conterminous United States A Generalized Hydrologic Stream Network (GenNet) of the Conterminous United States
A generalized hydrologic stream network (GenNet) consisting of 263,494 generalized flowlines, inclusive of coastline and terminating flow paths, was constructed for the conterminous United States (CONUS) to support efficient dynamic modeling of nutrient loads, streamflow, and downstream transport of other contaminants in streams. GenNet was generalized from the base network E3NHDPlusV2...
Digital data of structural and isopach features derived from previously published Black Warrior Basin studies Digital data of structural and isopach features derived from previously published Black Warrior Basin studies
The Black Warrior Basin is a sedimentary foreland basin in western Alabama and northern Mississippi. This basin is named after the Black Warrior River and is developed extensively for coal, coalbed methane, conventional oil, and natural gas production. Its geologic genesis was due to Paleozoic tectonic events between the Appalachian and Ouachita orogenic belts. The Paleozoic rock hosts...
Whole rock geochemistry data from Mesoproterozoic rocks in the Paradox Lake quadrangle, Essex County, New York Whole rock geochemistry data from Mesoproterozoic rocks in the Paradox Lake quadrangle, Essex County, New York
This data release includes whole rock (WR) geochemical data. Bureau Veritas Commodities Canada Ltd. Laboratories in Vancouver, British Columbia, Canada analyzed the samples. Meghan Toft and Greg Walsh collected the rock samples from outcrops in the 7.5-minute Paradox Lake quadrangle, New York. The whole rock geochemistry data constrain the composition of mapped rocks in the eastern...
Collection, analysis, and age-dating of sediment cores from coastal wetlands in Oyster Bay, Alabama, 2021 Collection, analysis, and age-dating of sediment cores from coastal wetlands in Oyster Bay, Alabama, 2021
To assess historical environment changes associated with changes in hydrologic connection to the Gulf Intracoastal Waterway (GIW) and Mobile Bay, six sediment cores (50-80 cm in length) were collected in 2021 from two coastal wetland sites. These two sites in Gulf Shores, Alabama were: Oyster Bay Nature Preserve ("OB", a brackish marsh with natural hydrology) and the Emmet O. and Vina...
USGS National Shoreline Change - A compilation of published shoreline change rates (1800s-2010s) for the contiguous United States USGS National Shoreline Change - A compilation of published shoreline change rates (1800s-2010s) for the contiguous United States
The U.S. Geological Survey (USGS) maintains shoreline positions for the United States coasts from both older sources, such as aerial photos or topographic surveys, as well as contemporary sources like lidar elevation point clouds and digital elevation models (DEMs). These shorelines are compiled and analyzed in the Digital Shoreline Analysis System (DSAS) software to compute rates of...