Grain size and bulk density from Little Holland Tract and Liberty Island, Sacramento-San Joaquin Delta, California, 2015 to 2019 (ver. 3.0, April 2023)

Grain size distribution and bulk density are reported for sediment samples from two flooded agricultural tracts, Little Holland Tract and Liberty Island, in the Sacramento-San Joaquin Delta, California. Samples were repeatedly collected at 8 sites using a Ponar grab or push core samplers during 19 visits to the study area from 2015 to 2019. The long-term time series data collection stations (sites LWA, HVB, HWC, and LVB) were sampled on almost every field survey, and the remaining sites were sampled 6 or times or fewer, some only once. All samples were analyzed for grain size distribution, and some were analyzed for bulk density. These data provide insight into how particle size distributions varied spatially and...

Categories: Data; Tags: CMGP, Coastal and Marine Geology Program, Liberty Island, Little Holland Tract, Oceans, All tags... PCMSC, Pacific Coastal and Marine Science Center, Sacramento-San Joaquin Delta, Sediment, Sedimentation, State of California, Substrate, U.S. Bureau of Reclamation, U.S. Geological Survey, USBR, USGS, bulk density, grab sampling, grain-size analysis, push coring, sea-floor characteristics, sediment transport, unconsolidated deposits, Fewer tags

Carbon storage in the edge environments of five salt marshes, Humboldt Bay, CA, 2018

Blue carbon storage in coastal vegetated habitats is an important component of the global carbon cycle. In 2018, shallow sediment cores were collected in five USGS study marshes located in Humboldt Bay, CA. The cores were collected within 2 m of the marsh edge to characterize carbon storage in areas susceptible to marsh edge erosion Two sediment cores were collected in each of the five study marshes (Mad River, Manila, Jacoby, White, Hookton) using an Ejkelkamp peat sampler (52 mm diameter). The sampler was pounded in the sediments with a heavy plastic mallet. This method produces little to no compaction because once inserted, the corer is rotated 180°, and a sample is collected adjacent to where it was driven into...

Categories: Data; Tags: California, Hookton marsh, Humboldt Bay, Humboldt County, Jacoby marsh, All tags... Mad River marsh, Manila marsh, White marsh, biota, blue carbon, bulk density, carbon storage, estuarine processes, marsh ecosystems, salt marsh, Fewer tags

Laboratory results associated with site w#84833.

Data in the IGS' GeoLab database for w#84833: results for a bulk density analysis on a sample from 0.43 to 0.43 feet deep; and results for 6 grain size analyses on samples from 0.43 to 6.56 feet deep.

Categories: Physical Item; Tags: bulk density, grain-size analysis

Laboratory results associated with site w#84837.

Data in the IGS' GeoLab database for w#84837: results for a bulk density analysis on a sample from 0.36 to 0.36 feet deep; and results for 4 grain size analyses on samples from 0.36 to 7.22 feet deep.

Categories: Physical Item; Tags: bulk density, grain-size analysis

Predictive soil property map: Available water holding capacity

These data were compiled to demonstrate new predictive mapping approaches and provide comprehensive gridded 30-meter resolution soil property maps for the Colorado River Basin above Hoover Dam. Random forest models related environmental raster layers representing soil forming factors with field samples to render predictive maps that interpolate between sample locations. Maps represented soil pH, texture fractions (sand, silt clay, fine sand, very fine sand), rock, electrical conductivity (ec), gypsum, CaCO3, sodium adsorption ratio (sar), available water capacity (awc), bulk density (dbovendry), erodibility (kwfact), and organic matter (om) at 7 depths (0, 5, 15, 30, 60, 100, and 200 cm) as well as depth to restrictive...

Tags: Arizona, Colorado, Colorado River, Colorado River Basin, Colorado River Basin above Hoover Dam, All tags... Hoover Dam, Nevada, New Mexico, Utah, Wyoming, accuracy and error estimated, available water capacity, bulk density, calcium carbonate, digital soil mapping, electrical conductivity, environmental conditions, environmental raster layers, erodibility, geoscientificInformation, gypsum, interpolate, machine learning, maps and atlases, organic matter, predicitve modeling, predictive mapping, predictive maps, random forest models, random forests, restrictive layer, rock, sodium adsorption ratio, soil conductivity, soil density, soil forming factors, soil pH, soil properties, soil property maps, soil sciences, soil texture, soils, surface rock cover, surface rock size, texture fractions, uncertainty, Fewer tags

Collection of Geophysical Data within the region of Clayton Valley, Nevada during the summer of 2019

This data release contains data from various geophysical studies performed around the larger Clayton Valley, NV area. These include reprocessed existing gravity data compiled from multiple sources, as well as newly collected gravity and ground magnetic data, and bulk densities and magnetic susceptibilities from outcrop, hand samples, and drill cores.

Categories: Data; Tags: Clayton Valley, NV, Geophysics, Mineral Resources, USGS Science Data Catalog (SDC), biota, All tags... bulk density, gravitational field (earth), magnetic field (earth), magnetic susceptibility, Fewer tags

Grain size, bulk density, and organic carbon of sediment cores from three locations in the Sacramento-San Joaquin Delta, California, 2017 to 2018

Bed sediment samples were collected in Lindsey Slough in April 2017, and Middle River and the Mokelumne River in March 2018, to analyze for sediment properties, including bulk density, particle size distribution, and percent organic carbon. Sediment samples were collected within the vegetation with push corers deployed from a small vessel, and in the unvegetated channel with a Gomex box corer, which was subsampled with three push cores per Gomex core. Data are provided in a comma-delimited values spreadsheet. These data were collected as part of a cooperative project, with the USGS California Water Science Center and the California Department of Fish and Wildlife, on the effects of invasive aquatic vegetation on...

Categories: Data; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Mokelumne River, Oceans, PCMSC, All tags... Pacific Coastal and Marine Science Center, Sacramento-San Joaquin Delta, Sediment, Sedimentation, State of California, Substrate, U.S. Geological Survey, USGS, bulk density, carbon, dissolved organic compounds, grab sampling, grain-size analysis, push coring, sea-floor characteristics, sediment transport, unconsolidated deposits, Fewer tags

Water content and grain density analyses of sediment cores from the New England Mud Patch collected on USGS Field Activity 2016-001-FA

Variability in sediment properties with depth and the thickness of individual sedimentary layers are critical determinants of seabed acoustic response. The New England Mud Patch (NEMP), located south of Cape Cod, is an unusual feature on the U.S. Continental Shelf in that it is composed of fine-grained sediment layers containing a relatively-homogeneous mix of sand, silt, and clay-sized particles bounded by more typical sandy shelf sediments. The unique characteristics and nature of this deposit is due to a derivation of sediments that have been transported to, and deposited in, a basal bowl-shaped depression since the last glacial maximum. Ninety-two piston, vibra-, and gravity cores with a maximum length of 8.2...

Categories: Data; Tags: Atlantic, Cruise ID EN577, Holocene, Martha's Vineyard, Massachusetts, All tags... NEMP, New England Mud Patch, R/V Endeavor, Seabed Experiment Area, U.S. Continental Shelf, U.S. Geological Survey, USGS, WHCMSC, WHCMSC Field Activity 2016-001-FA, Woods Hole Coastal and Marine Science Center, acoustic cores, bulk density, clay deposits, core analysis, cores, dry bulk density, earth material properties, geology, geotechnical analysis, grain density, gravity coring, moisture and density, oceans, piston cores, piston coring, porosity, pycnometer, sand deposits, sediment samples, sedimentology, soil moisture, trigger cores, unconsolidated deposits, vibracores, water content, Fewer tags

Alaska Geochemical Database Version 4.0 (AGDB4) including best value data compilations for rock, sediment, soil, mineral, and concentrate sample media

The Alaska Geochemical Database Version 4.0 (AGDB4) contains geochemical data compilations in which each geologic material sample has one best value determination for each analyzed species, greatly improving efficiency of use. The relational database includes historical geochemical data archived in the USGS National Geochemical Database (NGDB), the Atomic Energy Commission National Uranium Resource Evaluation (NURE) Hydrogeochemical and Stream Sediment Reconnaissance databases, and the Alaska Division of Geological and Geophysical Surveys (DGGS) Geochemistry database. Data from the U.S. Bureau of Mines and the U.S. Bureau of Land Management are included as well. The data tables describe historical and new quantitative...

Tags: AGDB, AMRAP, Alaska Geochemical Database, Alaska Mineral Resource Assessment Program, Alaska Range, All tags... Aleutian Range, Alexander Archipelago, Brooks Range, Chugach Mountains, Economic Geology, Geochemistry, Heavy Mineral Program, Kuskokwim Mountains, Mineral Resources, Seward Peninsula, USGS Science Data Catalog (SDC), Wrangell Mountains, aluminum, analytical chemistry, antimony, arsenic, ash, barium, beryllium, bismuth, boron, bound or essential water, bromine, bulk density, cadmium, calcium, calcium carbonate, carbon, carbon dioxide, carbonate carbon, cerium, cesium, chemical analysis, chlorine, chromium, cobalt, copper, dysprosium, environmental geochemistry, erbium, europium, exploration geochemistry, f02013=Eastern Aleutian Islands, f02016=Western Aleutian Islands, fOC4101=Gulf of Alaska, fOC4102=Bering Sea, fUS02=Alaska, fUS=United States, ferric iron, ferrous iron, fluorine, gadolinium, gallium, geochemical data, geochemistry, geoscientificInformation, germanium, gold, hafnium, heavy-mineral concentrate chemistry, holmium, hydrogen, indium, iodine, iridium, iron, lanthanum, lead, lithium, loss on ignition, lutetium, magnesium, manganese, mercury, mineral resources, mineralogical data, mineralogy, moisture or nonessential water, molybdenum, neodymium, nickel, niobium, nitrate, nitrogen, organic carbon, osmium, pH, palladium, phosphorus, platinum, potassium, powder density, praseodymium, pyritic sulfur, rhenium, rhodium, rock chemistry, rubidium, ruthenium, samarium, scandium, sediment chemistry, selenium, silicon, silver, sodium, soil chemistry, strontium, sulfate, sulfide, sulfur, tantalum, tellurium, terbium, thallium, thorium, thulium, tin, titanium, total water, tungsten, uranium, vanadium, ytterbium, yttrium, zinc, zirconium, Fewer tags

Soil bulk density in the Wyoming Basins Ecoregional Assessment area

Tags: Bulk Density, Colorado, Environment and Conservation, Idaho, Montana, All tags... Soils, United States, Utah, Wyoming, Fewer tags

Predictive soil property map: Calcium carbonate content

These data were compiled to demonstrate new predictive mapping approaches and provide comprehensive gridded 30-meter resolution soil property maps for the Colorado River Basin above Hoover Dam. Random forest models related environmental raster layers representing soil forming factors with field samples to render predictive maps that interpolate between sample locations. Maps represented soil pH, texture fractions (sand, silt clay, fine sand, very fine sand), rock, electrical conductivity (ec), gypsum, CaCO3, sodium adsorption ratio (sar), available water capacity (awc), bulk density (dbovendry), erodibility (kwfact), and organic matter (om) at 7 depths (0, 5, 15, 30, 60, 100, and 200 cm) as well as depth to restrictive...

Tags: Arizona, Colorado, Colorado River, Colorado River Basin, Colorado River Basin above Hoover Dam, All tags... Hoover Dam, Nevada, New Mexico, Utah, Wyoming, accuracy and error estimated, available water capacity, bulk density, calcium carbonate, digital soil mapping, electrical conductivity, environmental conditions, environmental raster layers, erodibility, geoscientificInformation, gypsum, interpolate, machine learning, maps and atlases, organic matter, predicitve modeling, predictive mapping, predictive maps, random forest models, random forests, restrictive layer, rock, sodium adsorption ratio, soil conductivity, soil density, soil forming factors, soil pH, soil properties, soil property maps, soil sciences, soil texture, soils, surface rock cover, surface rock size, texture fractions, uncertainty, Fewer tags

Predictive soil property map: Electrical conductivity (salinity)

These data were compiled to demonstrate new predictive mapping approaches and provide comprehensive gridded 30-meter resolution soil property maps for the Colorado River Basin above Hoover Dam. Random forest models related environmental raster layers representing soil forming factors with field samples to render predictive maps that interpolate between sample locations. Maps represented soil pH, texture fractions (sand, silt clay, fine sand, very fine sand), rock, electrical conductivity (ec), gypsum, CaCO3, sodium adsorption ratio (sar), available water capacity (awc), bulk density (dbovendry), erodibility (kwfact), and organic matter (om) at 7 depths (0, 5, 15, 30, 60, 100, and 200 cm) as well as depth to restrictive...

Tags: Arizona, Colorado, Colorado River, Colorado River Basin, Colorado River Basin above Hoover Dam, All tags... Hoover Dam, Nevada, New Mexico, Utah, Wyoming, accuracy and error estimated, available water capacity, bulk density, calcium carbonate, digital soil mapping, electrical conductivity, environmental conditions, environmental raster layers, erodibility, geoscientificInformation, gypsum, interpolate, machine learning, maps and atlases, organic matter, predicitve modeling, predictive mapping, predictive maps, random forest models, random forests, restrictive layer, rock, sodium adsorption ratio, soil conductivity, soil density, soil forming factors, soil pH, soil properties, soil property maps, soil sciences, soil texture, soils, surface rock cover, surface rock size, texture fractions, uncertainty, Fewer tags

New soil data collection: site-level physicochemical properties

Winter climate change has the potential to have a large impact on coastal wetlands in the southeastern U.S. Warmer winter temperatures and reductions in the intensity of freeze events would likely lead to mangrove forest range expansion and salt marsh displacement in parts of the U.S. Gulf of Mexico and Atlantic coast. The objective of this research was to better understand some of the ecological implications of mangrove forest migration and salt marsh displacement. The potential ecological effects of mangrove migration are diverse ranging from important biotic impacts (e.g., coastal fisheries, land bird migration; colonial nesting wading birds) to ecosystem stability (e.g., response to sea level rise and drought;...

Categories: Data; Tags: Cedar Key, Data, Forests, Grasslands and Plains, Gulf of Mexico, All tags... Landscapes, Port Aransas, Port Fourchon, Sea-Level Rise and Coasts, Southeast CASC, State of Florida, State of Louisiana, State of Texas, United States of America, Water, Coasts and Ice, Wetlands, bulk density, bulk density, moisture, moisture, soil, soil, soil inorganic matter, soil inorganic matter, soil organic matter, soil organic matter, total carbon, total carbon, total nitrogen, total nitrogen, Fewer tags

Area- and Depth-Weighted Averages of Selected SSURGO Variables for the Conterminous United States and District of Columbia

These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This digital data release consists of seven national data files of area- and depth-weighted averages of select soil attributes for every available county in the conterminous United States and the District of Columbia as of March 2014. The files are derived from Natural Resources Conservations Service’s (NRCS) Soil Survey Geographic database (SSURGO). The data files can be linked to the raster datasets of soil mapping unit identifiers...

Categories: pre-SM502.8; Tags: Alaska, Hawaii, NSDI, Puerto Rico, SSURGO, All tags... Soils, USGS Science Data Catalog (SDC), United States, annual minimum water table depth, available water storage in the first 25 centimeters of the soil horizon, average water capacity, bulk density, dominant drainage class, drainage class, environment, environment, geoscientific Information, geoscientificInformation, hydric condition, hydric rating, hydrologic groups, inlandWaters, inlandWaters, kfact, ksat, minimum water table depth for the months April, May and June, organic material, percent clay, percent sand, percent silt, porosity, saturated hydraulic conductivity, soil erodibility factor, vertical saturated hydraulic conductivity, wettest drainage class, Fewer tags

Predictive soil property map: Silt content

These data were compiled to demonstrate new predictive mapping approaches and provide comprehensive gridded 30-meter resolution soil property maps for the Colorado River Basin above Hoover Dam. Random forest models related environmental raster layers representing soil forming factors with field samples to render predictive maps that interpolate between sample locations. Maps represented soil pH, texture fractions (sand, silt clay, fine sand, very fine sand), rock, electrical conductivity (ec), gypsum, CaCO3, sodium adsorption ratio (sar), available water capacity (awc), bulk density (dbovendry), erodibility (kwfact), and organic matter (om) at 7 depths (0, 5, 15, 30, 60, 100, and 200 cm) as well as depth to restrictive...

Tags: Arizona, Colorado, Colorado River, Colorado River Basin, Colorado River Basin above Hoover Dam, All tags... Hoover Dam, Nevada, New Mexico, Utah, Wyoming, accuracy and error estimated, available water capacity, bulk density, calcium carbonate, digital soil mapping, electrical conductivity, environmental conditions, environmental raster layers, erodibility, geoscientificInformation, gypsum, interpolate, machine learning, maps and atlases, organic matter, predicitve modeling, predictive mapping, predictive maps, random forest models, random forests, restrictive layer, rock, sodium adsorption ratio, soil conductivity, soil density, soil forming factors, soil pH, soil properties, soil property maps, soil sciences, soil texture, soils, surface rock cover, surface rock size, texture fractions, uncertainty, Fewer tags

Grain size and bulk density of sediment cores from Little Holland Tract and Liberty Island, Sacramento-San Joaquin Delta, California, 2016

Grain size distribution and bulk density are reported for sediment push cores from two flooded agricultural tracts, Little Holland Tract and Liberty Island, in the Sacramento-San Joaquin Delta, California. Push core samples were collected from 17 sites by the U.S. Geological Survey in June 2016. Each core was analyzed at multiple depths to investigate variations in particle sizes with depth below the sediment surface. The same sites were sampled previously in 2014 (https://www.sciencebase.gov/catalog/item/5a73a58fe4b0a9a2e9e172cf). These data provide insight into the variation of particle size distributions in space, bed depth, and time.

Categories: Data; Tags: CMGP, Coastal and Marine Geology Program, Liberty Island, Little Holland Tract, Oceans, All tags... PCMSC, Pacific Coastal and Marine Science Center, Sacramento-San Joaquin Delta, Sediment, Sedimentation, State of California, Substrate, U.S. Bureau of Reclamation, U.S. Geological Survey, USBR, USGS, bulk density, grain-size analysis, push coring, sea-floor characteristics, sediment transport, unconsolidated deposits, Fewer tags

Predictive soil property map: Surface rock

These data were compiled to demonstrate new predictive mapping approaches and provide comprehensive gridded 30-meter resolution soil property maps for the Colorado River Basin above Hoover Dam. Random forest models related environmental raster layers representing soil forming factors with field samples to render predictive maps that interpolate between sample locations. Maps represented soil pH, texture fractions (sand, silt clay, fine sand, very fine sand), rock, electrical conductivity (ec), gypsum, CaCO3, sodium adsorption ratio (sar), available water capacity (awc), bulk density (dbovendry), erodibility (kwfact), and organic matter (om) at 7 depths (0, 5, 15, 30, 60, 100, and 200 cm) as well as depth to restrictive...

Tags: Arizona, Colorado, Colorado River, Colorado River Basin, Colorado River Basin above Hoover Dam, All tags... Hoover Dam, Nevada, New Mexico, Utah, Wyoming, accuracy and error estimated, available water capacity, bulk density, calcium carbonate, digital soil mapping, electrical conductivity, environmental conditions, environmental raster layers, erodibility, geoscientificInformation, gypsum, interpolate, machine learning, maps and atlases, organic matter, predicitve modeling, predictive mapping, predictive maps, random forest models, random forests, restrictive layer, rock, sodium adsorption ratio, soil conductivity, soil density, soil forming factors, soil pH, soil properties, soil property maps, soil sciences, soil texture, soils, surface rock cover, surface rock size, texture fractions, uncertainty, Fewer tags

Alaska Geochemical Database Version 3.0 (AGDB3) including best value data compilations for rock, sediment, soil, mineral, and concentrate sample media

The Alaska Geochemical Database Version 3.0 (AGDB3) contains new geochemical data compilations in which each geologic material sample has one best value determination for each analyzed species, greatly improving speed and efficiency of use. Like the Alaska Geochemical Database Version 2.0 before it, the AGDB3 was created and designed to compile and integrate geochemical data from Alaska to facilitate geologic mapping, petrologic studies, mineral resource assessments, definition of geochemical baseline values and statistics, element concentrations and associations, environmental impact assessments, and studies in public health associated with geology. This relational database, created from databases and published...

Categories: Data, Data Release - Revised; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: AGDB, AMRAP, Alaska Geochemical Database, Alaska Mineral Resource Assessment Program, Alaska Range, All tags... Aleutian Range, Alexander Archipelago, Brooks Range, Chugach Mountains, Geochemistry, Heavy Mineral Program, Kuskokwim Mountains, Mineralogy, Praseodymium, Seward Peninsula, USGS Science Data Catalog (SDC), Wrangell Mountains, aluminum, analytical chemistry, antimony, arsenic, ash, barium, beryllium, bismuth, boron, bound or essential water, bromine, bulk density, cadmium, calcium, calcium carbonate, carbon, carbon dioxide, carbonate carbon, cerium, cesium, chemical analysis, chlorine, chromium, cobalt, copper, dysprosium, environmental geochemistry, erbium, europium, exploration geochemistry, f02013=Eastern Aleutian Islands, f02016=Western Aleutian Islands, fOC4101=Gulf of Alaska, fOC4102=Bering Sea, fUS02=Alaska, fUS=United States, ferric iron, ferrous iron, fluorine, gadolinium, gallium, geochemical data, geochemistry, geoscientificInformation, germanium, gold, hafnium, heavy-mineral concentrate chemistry, holmium, hydrogen, indium, iodine, iridium, iron, lanthanum, lead, lithium, loss on ignition, lutetium, magnesium, manganese, mercury, mineral resources, mineralogical data, mineralogy, moisture or nonessential water, molybdenum, neodymium, nickel, niobium, nitrate, nitrogen, organic carbon, osmium, pH, palladium, phosphorus, platinum, potassium, powder density, pyritic sulfur, rhenium, rhodium, rock chemistry, rubidium, ruthenium, samarium, scandium, sediment chemistry, selenium, silicon, silver, sodium, soil chemistry, strontium, sulfate, sulfide, sulfur, tantalum, tellurium, terbium, thallium, thorium, thulium, tin, titanium, total water, tungsten, uranium, vanadium, ytterbium, yttrium, zinc, zirconium, Fewer tags

Summary of soil field-saturated hydraulic conductivity, hydrophobicity, and preferential-flow measurements and soil laboratory-testing results collected at three sites on the islands of Maui and Hawaii, Hawaii, July 2016–January 2018

The U.S. Geological Survey Pacific Islands Water Science Center and the University of Hawaii at Manoa Department of Geography, in cooperation with the U.S. Department of Interior Pacific Islands Climate Adaptation Science Center initiated a field data-collection program as part of a study to quantify the impacts of drought on water resources and the importance of cloud-water interception in mitigating the impacts of drought (see Related External Resources link below). The goal of the data-collection program is to provide information for evaluating the role that cloud-water interception in Hawaii’s rain forests has in providing moisture for plants, reducing wildfire risk within the fog zone, and contributing to groundwater...

Categories: Data; Tags: Hawaii, Hydrology, Maui, Soil Sciences, USGS Science Data Catalog (SDC), All tags... bulk density, gravimetric water content, hydrophobicity, infiltration, infiltration rate, particle size distribution, porosity, preferential flow, saturated hydraulic conductivity, soil moisture, soil porosity, soil water content, volumetric water content, Fewer tags

Radioisotopes, percent organic carbon, percent inorganic sediment, and bulk density for peat and sediment cores collected in the Sacramento-San Joaquin Delta, California

This data release contains data from cores collected in marshes and in sediments under invasive Brazilian waterweed (Egeria densa Planchon) in the Sacramento-San Joaquin Delta of California during the spring of 2018. Data are provided in two text files in comma separated columns. The first Core_Sites_Details.txt contains core site location, collection dates, and naming information. The second file, Core_Section_Analyses.txt contains % organic carbon, % inorganic sediment, bulk density data for each 2-cm section of six peat cores collected in marshes and six sediment cores collected under patches of Brazilian waterweed. Additionally, the second file contains the radioisotope values (137Cs and 210Pb) for each of the...

Categories: Data; Tags: California, Lindsey Slough, Middle River, Mokelumne River, Sacramento-San Joaquin Delta, All tags... Sedimentology, Soil Sciences, USGS Science Data Catalog (SDC), biota, bulk density, environment, invasive aquatic vegetation, organic carbon, peat, radioisotope, sediment, Fewer tags