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Grade and tonnage data for tungsten vein and greisen deposits Grade and tonnage data for tungsten vein and greisen deposits
Tungsten is a mineral commodity critical for national security and the economy. Vein and greisen deposits host wolframite, a tungsten ore mineral that accounts for a significant portion of global mine production and resources. This data release contains updated resource information for globally distributed deposits that underpin grade and tonnage modeling efforts.
Grain-size analysis data from sediment samples in support of oceanographic and water-quality measurements in the nearshore zone of Sandy Neck Beach, Cape Cod Bay, Massachusetts, collected in March and April, 2021 Grain-size analysis data from sediment samples in support of oceanographic and water-quality measurements in the nearshore zone of Sandy Neck Beach, Cape Cod Bay, Massachusetts, collected in March and April, 2021
The U.S. Geological Survey Woods Hole Coastal and Marine Science Center collected data to assess cross-shore sediment transport prediction techniques in coastal models for a wave-dominated sandy coast. A quadpod was deployed on the seafloor in the nearshore zone of Sandy Neck Beach, Cape Cod Bay, MA in March 2021 to analyze water velocities near the seabed and the response of the seabed...
Grain-size analysis data of sediment samples from the beach and nearshore environments at the Pea Island National Wildlife Refuge DUNEX site, North Carolina in 2021 Grain-size analysis data of sediment samples from the beach and nearshore environments at the Pea Island National Wildlife Refuge DUNEX site, North Carolina in 2021
This data release supersedes version 1.0, published in September 2022 at https://doi.org/10.5066/P9XEFRYR. Versioning details are documented in the accompanying revision_history.txt file. These data provide grain-size measurements from sediment samples collected as part of the USGS DUring Nearshore Event eXperiment (DUNEX) site on Pea Island National Wildlife Refuge, NC. DUNEX is a multi...
Grammar transformations of topographic feature type annotations of the U.S. to structured graph data Grammar transformations of topographic feature type annotations of the U.S. to structured graph data
These data were used to examine grammatical structures and patterns within a set of geospatial glossary definitions. Objectives of our study were to analyze the semantic structure of input definitions, use this information to build triple structures of RDF graph data, upload our lexicon to a knowledge graph software, and perform SPARQL queries on the data. Upon completion of this study...
Grand Calumet River Area of Concern Metabarcoding Data Grand Calumet River Area of Concern Metabarcoding Data
The Grand Calumet River flows through northwestern Indiana and was designated an EPA Area of Concern (AOC) in 1987. There are multiple legacy pollutants in the river including but not limited to heavy metals and PCBs. To investigate potential causes and patterns of eutrophication in the river, water samples were collected for 16S rRNA microbial and eukaryotic 18S rRNA amplicon sequencing...
Grass Carp (Ctenopharyngodon idella) Egg Diameter Estimates from the Huron River (Ohio), 2022 Grass Carp (Ctenopharyngodon idella) Egg Diameter Estimates from the Huron River (Ohio), 2022
These data include egg diameter estimates from Grass Carp (Ctenopharyngodon idella) eggs collected during bongo net sampling in the Huron River (Ohio; 41.3305, -82.5812) on May 23, 2022 near Milan, Ohio. Egg diameters were estimated from photographs using proportional relationships of pixel lengths with a known length scale bar in millimeters. Given that eggs were not perfectly spherical...
Grass carp capture and life history traits in the Lake Erie watershed, 2017-2023, and in the Mississippi, Missouri, and Lamine Rivers within the state of Missouri, 2022 Grass carp capture and life history traits in the Lake Erie watershed, 2017-2023, and in the Mississippi, Missouri, and Lamine Rivers within the state of Missouri, 2022
From 2017-2023, a total of 934 Grass Carp were removed from the Lake Erie basin and tributaries, and 159 were captured in the Mississippi, Missouri, and Lamine Rivers within the state of Missouri in 2022. For each captured fish we documented capture location, water temperature; we measured total length and total weight. Length data was used to assess the removal efforts in Lake Erie. A...
Grass Carp Movement and Capture Data from the Sandusky River, Lake Erie, Ohio, USA from 2020 to 2022 Grass Carp Movement and Capture Data from the Sandusky River, Lake Erie, Ohio, USA from 2020 to 2022
Data includes grass carp position and sampling data from 2020 to 2022. We used grass carp that were implanted with acoustic transmitters. The position data was generated in Fathom Position from receivers that composed several VEMCO Positioning Systems (VPS). We also queried the Great Lakes Acoustic Telemetry Observation Network (GLATOS) to obtain non-VPS position detections from...
Gravity Cores and Box Cores from Suisun Bay, San Pablo Bay, and San Francisco Bay, California Gravity Cores and Box Cores from Suisun Bay, San Pablo Bay, and San Francisco Bay, California
This data release contains information on 94 gravity cores and 3 box cores that were collected by the U.S. Geological Survey in the areas of Suisun, San Pablo, and San Francisco Bay, California in 1990 and 2000. PDF files describe the cores that were split for analysis, and another pdf file contains a core-log legend. In addition, a shapefile provides sample collection data.
Gravity data in the Wet Mountains area, southcentral Colorado, 2023 Gravity data in the Wet Mountains area, southcentral Colorado, 2023
The U.S. Geological Survey collected ground gravity data as part of a helicopter reconnaissance campaign of the Democrat Creek alkaline complex and Deer Peak quadrangle in the Wet Mountains, Colorado. A total of 60 measurements were collected using a LaCoste and Romberg gravity meter. High accuracy geographic coordinates and elevations were collected using a survey grade Leica GS16...
Gravity, density, and magnetic property measurements of the Sierra Nevada, California and Nevada Gravity, density, and magnetic property measurements of the Sierra Nevada, California and Nevada
This data release presents point data associated with the geologic and geophysical maps of the Sierra Nevada Digital Earth Science Atlas led by the California Geological Survey and U.S. Geological Survey. Data include principal fact information for new gravity measurements collected by the U.S. Geological Survey from 2012 to 2023 and for existing gravity measurements compiled from 21...
Great Lakes Restoration Initiative's Terrestrial Habitats & Connectivity Work Group's Pilot Area's Post-Fiscal Year 2023 Forest Habitat Connectivity Great Lakes Restoration Initiative's Terrestrial Habitats & Connectivity Work Group's Pilot Area's Post-Fiscal Year 2023 Forest Habitat Connectivity
This dataset is the fourth installment of a yearly connectivity update for forested habitat within the Great Lakes Restoration Initiative's (GLRI) Terrestrial Habitats & Connectivity (TH&C) work group's Pilot Area. The Pilot Area is a region of the northern Great Lakes Basin between Ashland, WI and the Keweenaw Peninsula and is bounded by Lake Superior in the north and the basin boundary...