cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5066/p9jgodo2
title: U-Pb data for: Monazite and cassiterite U-Pb dating of the Abu Dabbab rare-metal granite, Egypt: Late Cryogenian metalliferous granite magmatism in the Arabian-Nubian Shield

description: Cassiterite (SnO2) samples were collected from alluvial ore concentrate from the Abu Dabbab Granite in eastern Egypt. Samples (in the form of mounted loose grains) were prepared and analyzed for direct age dating on a laser ablation inductively coupled plasma mass spectrometer (LA-ICPMS) system at the U.S. Geological Survey in Denver, Colorado in February 2019. This data release accompanies the publication, 'Monazite and cassiterite U-Pb dating of the Abu Dabbab rare-metal granite, Egypt: Late Cryogenian metalliferous granite magmatism in the Arabian-Nubian Shield.' (Lehmann and others, 2020). The publication constrains the timing of the magmatic-hydrothermal processes of the Abu Dabbab Granite which represents the oldest, highly-evolved granite recognized thus far in the Pan-African Arabian-Nubian Shield.
DOI: 10.5066/p9lifrf0
title: Multi-element geochemical analyses of samples from the Mesoproterozoic Nonesuch Formation and Copper Harbor Conglomerate at the Copperwood copper deposit, Western Syncline, Michigan, USA

description: This data release provides multi-element data for drill core samples from the Mesoproterozoic Nonesuch Formation and Copper Harbor Conglomerate at the Copperwood copper deposit, Michigan, USA. Copper was determined by assay, and sulfur by inductively coupled plasma-optical emission spectrometry (ICP-OES) after aqua regia digestion for most samples. Multi-element whole rock analyses were determined for selected samples. The Copperwood copper deposit is a sediment-hosted stratiform copper deposit in the Presque Isle Syncline of the Upper Peninsula of Michigan. The deposit has a 2018 mineral resource estimate of 42.2 million metric tons (Mt) of measured plus indicated mineral resources in the Lower Copper Bearing Sequence at an average grade of 1.60 percent Cu and 3.84 grams per ton (g/t) Ag. The measured plus indicated mineral resource in the Upper Copper Bearing Sequence is estimated to be 7.1 Mt at an average grade of 1.21 percent Cu and 3.26 g/t Ag (Gignac, 2018). The mineral reserves for the Copperwood Project are estimated at 25.4 Mt at an average grade of 1.43 percent Cu and 3.83 g/t Ag (Gignac, 2018). Reference: Gignac, L.P., 2018, Feasibility Study Copperwood Project Michigan, USA, NI 43-101 technical report prepared for Highland Copper Company Inc. [Effective Date June 14, 2018]: G Mining Services Inc., 468 p., accessed September 13, 2019, at https://docs.wixstatic.com/ugd/62921a_41a8193d4db1498e8a2d5b1d1391308f.pdf.
DOI: 10.5066/p9lo38i3
title: Ground-based time-domain electromagnetic data and resistivity models near Manistee National Forest, Michigan, 2020

description: Ground-based transient electromagnetic (TEM) data were acquired by the U.S. Geological Survey (USGS) in selected locations near Manistee National Forest, Michigan, to define the resistivity structure of the subsurface. Data were acquired using the ABEM WalkTEM system (Guideline Geo Ab, Sundbyberg, Sweden). TEM data were processed and numerically inverted to derive one-dimensional resistivity structure using SPIA (Aarhus Geosoftware, Aarhus, Denmark). This release includes raw and processed TEM data and resistivity models for each data location. Also includes information on WalkTEM channel mapping for moment and receiver types USF files (49 files) - raw, unprocessed data files with naming convention [LONGDATE] and [_UNIQUEID] and [_STATIONID].usf, where LONGDATE (ex.20200916), UNIQUEID (ex. 230145_828), STATIONID (ex. Station1), MIT_TEM, AarhusInv_manual_TEM.txt - manual describing the TEM file format, TEM files (196 files) - processed data files with naming convention [MIT_TEM] and [_DATE] and [_MI] and [_SITE] and [_SIZE] and [_MOMENT] and [-RECEIVER].tem, where DATE (ex. 091620), SITE (ex. 756), SIZE (a='100m*100m', b='40m*40m'), MOMENT (ex. LM), RECEIVER (ex. RC005), Models, MIT_Model_Plots, Image files of model plots (49 files) - Images of model plots with naming convention [MIT_TEM] + [_DATE] + [_MI] + [_SITE].png, where DATE (ex. 091620), SITE (ex. 756), SIZE (a,b), TEM_model_data_dictionary.csv - Data dictionary describing all channels in tabulated model file, MIT_TEM_models.csv - tabulated model file. All channels are described in the model data dictionary MIT_TEM_2020_SoundingLocationsModels.gdb.zip - file geodatabase containing all sounding locations, model information, and has the model plots linked to each site.
DOI: 10.5066/p9ltqefl
title: Airborne Electromagnetic (AEM) Survey Inventory

description: The U.S. Geological Survey (USGS) has been engaged in airborne electromagnetics (AEM) since the 1970s, playing a role in the development of early acquisition systems, developing calibration methods, refining standards for data acquisition, improving data processing, modeling, and interpretation methods, and expanding the range of AEM applications. However, USGS AEM survey visibility and data accessibility has not advanced as rapidly as our use of the technique. This data release catalogs AEM surveys in the United States that have contributed to studies under USGS programs including Water, Geologic Mapping, Minerals, Energy, Environmental Health, Ecosystems, Hazards, and Climate. This dataset contains locations for known and inventoried surveys, shows the footprints of the survey area, and summarizes basic survey specifications and publication status. It deviates from the national airborne geophysical survey inventory (https://mrdata.usgs.gov/airborne/ ): the AEM-specific data release catalogs completed and contracted AEM surveys including those that have not been published to date. This release also includes an indicator of activity status with the intent of improving utility and leading to regular updates; inactive (studies utilizing these data are complete), active (data are currently being used as part of on-going USGS research), and planned (acquisition is currently in progress at publication date).
DOI: 10.5066/p9mjli0x
title: Hydrologic reconnaissance to identify areas of emergent groundwater, Mineral Creek, near Silverton, Colorado, June 2020

description: Hydrologic reconnaissance of Mineral Creek near Silverton, Colo., was conducted from June 25-27, 2020. Both banks of Mineral Creek and the adjacent hillsides were walked, starting near the ghost town of Chattanooga and proceeding downstream to the confluence of Mineral Creek with the Middle Fork of Mineral Creek. The purpose of this reconnaissance was to identify areas of emergent groundwater on the right (EGR) and left (EGL) banks, a task that was accomplished by following observed surface flows (seeps and springs) upgradient to the point at which they emanated from the subsurface. Coordinates, using a handheld global positioning system (GPS) device, and photographs were obtained at these locations of emergent groundwater. Water temperature and specific conductance were measured at a subset of locations. Elevation for each location was subsequently assigned using an existing LIDAR data set. Similar procedures were followed at additional sites such as where surface flows entered Mineral Creek (right (RBI) and left (LBI) bank inflows) and the main stem of Mineral Creek (STR). These data are provided in a visual format through the associated KMZ file (224 MB), which provides an HTML formatted pop-up of unique point data and photograph when a waypoint is selected. This release is complementary to a synoptic study conducted in 1999 (Kimball and others, 2007). References: Kimball, B.A., Walton-Day, K. and Runkel, R.L., 2007, Quantification of metal loading by tracer injection and synoptic sampling, 1996-2000, chap. E9 of Church, S.E., von Guerard, P., and Finger, S.E., eds., Integrated investigations of environmental effects of historical mining in the Animas River Watershed, San Juan County, Colorado: U.S. Geological Survey Professional Paper 1651, p. 417-495. https://doi.org/10.3133/pp1651.
DOI: 10.5066/p9mvnp5g
title: Data for generating statistical maps of soil lanthanum concentrations in the conterminous United States

description: The product data are six statistics that were estimated for the chemical concentration of lanthanum in the soil C horizon of the conterminous United States (Smith and others, 2013). The estimates are made at 9998 locations that are uniformly distributed across the conterminous United States. The six statistics are the mean for the isometric log-ratio transform of the concentrations, the equivalent mean for the concentrations, the standard deviation for the isometric log-ratio transform of the concentrations, the probability of exceeding a concentration of 48.8 milligrams per kilogram, the 0.95 quantile for the isometric log-ratio transform of the concentrations, and the equivalent 0.95 quantile for the concentrations. Each statistic may be used to generate a statistical map that shows an attribute of the distribution of lanthanum concentration. Smith, D.B., Cannon, W.F., Woodruff, L.G., Solano, Federico, Kilburn, J.E., and Fey, D.L., 2013, Geochemical and mineralogical data for soils of the conterminous United States: U.S. Geological Survey Data Series 801, 19 p., https://pubs.usgs.gov/ds/801/
DOI: 10.5066/p9nacn2e
title: Argon geochronology data for La Garita caldera

description: This dataset accompanies publication 'A supervolcano and its sidekicks: A 100 ka eruptive chronology of the Fish Canyon Tuff and associated units of the La Garita magmatic system', in review in Geology, which analyzed eruptive products from the La Garita caldera.
DOI: 10.5066/p9nbgpuz
title: In situ geochemical data related to the gold-quartz veins of Grass Valley, California, 2014-2015

description: In situ geochemical data were obtained for pyrite crystals and native gold from two distinct vein sets in the Grass Valley gold district, California. Samples of the N-S veins were collected underground at the Empire Mine State Historic Park and samples of the E-W veins were collected from drill core provided by the Idaho-Maryland Mining Corporation in 2008. These geochemical data were analyzed to better understand paragenesis of quartz veins in orogenic gold deposits. Data includes electron probe microanalysis (EPMA) and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) chemistry and LA-ICP-MS sulfur isotope values for pyrite crystals, and EPMA geochemistry of native gold grains found within the orogenic gold veins. The geochemical results presented in this data release were analyzed at the U.S. Geological Survey in Denver, Colorado. Electron probe microanalyses were performed using a JEOL 8900 electron microprobe with five wavelength dispersive X-ray spectrometers. Operating conditions included a beam current of 100 nano-ampere (nA) measured on the Faraday cup, a focused electron beam, and an accelerating voltage of 20 kiloelectron-volt(keV). Minor and trace element geochemistry was determined by LA-ICP-MS using a Photon Machines Analyte (193-nanometer (nm) excimer) coupled to a PerkinElmer DRC-e ICP-MS using a spot size of 25 micrometers (um). In situ sulfur isotope data was collected using a Nu Instruments high-resolution MC-ICP-MS via a 193-nm wavelength GS excimer laser ablation system with spot sizes varying from approximately 25-55 um.
DOI: 10.5066/p9o8gg0m
title: Table of Electron Probe Microanalyses of Cassiterite from the Sullivan Pb-Zn-Ag Deposit, British Columbia

description: This dataset contains results from electron microprobe analyses of cassiterite from the Sullivan Pb-Zn-Ag deposit, British Columbia. These data were collected from two samples and may not reflect the overall variability present at the deposit. An ASCII text file of results is provided in comma-separated by value (csv) format. The file has the name &quot;2019-07-09_Sullivan_Cassiterite&quot;.
DOI: 10.5066/p9oleu17
title: Airborne electromagnetic and magnetic survey data, Stillwater Complex, Montana, May 2000

description: A helicopter-borne electromagnetic/magnetic survey was flown over the Stillwater area, southwest Montana from May 5 to May 16, 2000. The survey was conducted over the Stillwater Igneous Complex, a Precambrian layered mafic-ultramafic intrusion which is characterized by igneous layering. Electromagnetic data were acquired using DIGHEM helicopter-borne electromagnetic system. Magnetic data were collected with optically pumped Cesium Vapor Geometrics G822 magnetometer. Sensor elevation above ground was measured with Honeywell/Sperry AA220 radar. The nominal elevation of the sensor was 60 meters. Survey coverage comprises 1,914 line kilometers, including tie lines. Flight lines were flown in an azimuthal direction of 020 degrees with a nominal line separation of 200 meters. In the southeastern portion of the survey area, in-fill lines were flown for coverage every 100 meters. Two tie lines were flown perpendicular to the flight lines.
DOI: 10.5066/p9onokkx
title: Digital map of iron sulfate minerals, other mineral groups, and vegetation of the San Juan Mountains, Colorado, and Four Corners Region derived from automated analysis of Landsat 8 satellite data

description: Multispectral remote sensing data acquired by the Landsat 8 Operational Land Imager (OLI) sensor were analyzed using a new, automated technique to generate a map of exposed mineral and vegetation groups in the western San Juan Mountains, Colorado and the Four Corners Region of the United States (Rockwell and others, 2021). Spectral index (e.g. band-ratio) results were combined into displayed mineral and vegetation groups using Boolean algebra. New analysis logic has been implemented to exploit the coastal aerosol band in Landsat 8 OLI data and identify concentrations of iron sulfate minerals. These results may indicate the presence of near-surface pyrite, which can be a potential non-point source of acid rock drainage. Map data, in ERDAS IMAGINE (.img) thematic raster format, represent pixel values with mineral and vegetation group classifications, and can be queried in most image processing and GIS software packages. Rockwell, B.W., Gnesda, W.R., and Hofstra, A.H., 2021, Improved automated identification and mapping of iron sulfate minerals, other mineral groups, and vegetation from Landsat 8 Operational Land Imager Data: San Juan Mountains, Colorado, and Four Corners Region: U.S. Geological Survey Scientific Investigations Map 3466, scale 1:325,000, 51 p. pamphlet, https://doi.org/10.3133/sim3466.
DOI: 10.5066/p9ovm0ae
title: Magnetotelluric sounding data in the Silverton Caldera complex, Colorado, 2018

description: This data release includes magnetotelluric (MT) sounding data collected in July 2018 in the Silverton Caldera complex, Colorado, in the Southern Rocky Mountain Volcanic Field, by the U.S. Geological Survey (USGS). Along with geologic mapping, airborne magnetics, airborne electromagnetics, and audiomagnetotellurics, the USGS collected MT data at 22 sites along four profiles ranging from 3 to 6 kilometers in length across the north-western structural margin of the Silverton caldera in Mineral Basin (MB01-MB05), across the south-eastern margin of the caldera along Cunningham Creek (CC01-CC05), within the caldera in Eureka Graben (EG01-EG05), and within the caldera along upper Cement Creek near the Gold King mine (GK01-GK09).
DOI: 10.5066/p9p6du50
title: Argon data for Amazon Craton

description: This dataset accompanies planned publication 'Genesis of early Neoproterozoic gold deposits, southwestern Amazon Craton, western Brazil'. The Ar/Ar data is for samples that record the mineralization of the area. The geochronology provides time constraints for the mineralization studied in the manuscript. Samples were collected from the Amazon Craton region, and collection was done by Rodrigo Prudente de Melo of the Univ. Federal de Goias, who sent them to the USGS Denver Argon Geochronology Laboratory for Ar/Ar analysis.
DOI: 10.5066/p9syhguv
title: U-Pb detrital zircon data for: lower Paleozoic sedimentary rocks near Silverton, CO USA

description: This Laser ablation ICPMS U-Pb detrital zircon data set supports mapping and stratigraphic interpretations of the Upper Devonian Ignacio Formation in southwestern Colorado (Silverton area). All samples were collected from a measured stratigraphic section called "Sultan Creek South" located at 37.710010 and -107.67530 (Evans and others, 2019). The Ignacio Formation was previously interpreted as Cambrian, but evidence that it is Devonian includes reexamined fossil data and detrital zircon U-Pb geochronology. The Ignacio Formation has a stratigraphic trend of detrital zircon ages shifting from a single ca. 1.7 Ga age peak to bimodal ca. 1.4 Ga and ca. 1.7 Ga age peaks, which represents local source-area unroofing history. Specifically, the upper plate of a Proterozoic thrust system (ca. 1.7 Ga Twilight Gneiss) was eroded prior to exposure of the lower plate (ca. 1.4 Ga Uncompahgre Formation). These results are a significant alternative interpretation of the geologic history of the southern Rocky Mountains.
DOI: 10.5066/p9tewhie
title: U-Pb data for: U-Pb geochronology of tin deposits associated with the Cornubian Batholith of southwest England: Direct dating of cassiterite by in situ LA-ICPMS

description: Cassiterite (SnO2) samples were collected throughout Devon and Cornwall Counties in southwest England, United Kingdom. Samples were prepared and analyzed for direct age dating on a laser ablation inductively coupled plasma mass spectrometer (LA-ICPMS) system at the U.S. Geological Survey in Denver, Colorado in February and April 2018. This data release accompanies the publication, 'U-Pb geochronology of tin deposits associated with the Cornubian Batholith of southwest England: Direct dating of cassiterite by in situ LA-ICPMS' (Moscati and Neymark, 2018). The publication describes a greater chronologic control and refinement of Cornubian tin ore deposition and allows comparison of its timing with previously published ages for the granitic intrusions that host the cassiterite.
DOI: 10.17638/datacat.liverpool.ac.uk/1581
title: Drosophila obscura
DOI: 10.5066/p9uvymvw
title: Data for generating statistical maps of soil lithium concentrations in the conterminous United States

description: The product data are six statistics that were estimated for the chemical concentration of lithium in the soil C horizon of the conterminous United States. The estimates are made at 9998 locations that are uniformly distributed across the conterminous United States. The six statistics are the mean for the isometric log-ratio transform of the concentrations, the equivalent mean for the concentrations, the standard deviation for the isometric log-ratio transform of the concentrations, the probability of exceeding a concentration of 55 milligrams per kilogram, the 0.95 quantile for the isometric log-ratio transform of the concentrations, and the equivalent 0.95 quantile for the concentrations. Each statistic may be used to generate a statistical map that shows an attribute of the distribution of lithium concentration.
DOI: 10.5066/p9w7jbfq
title: Environmental tracer data from surface water and groundwater samples collected in Redwell Basin near Crested Butte, Colorado, 2017-2019

description: This dataset contains environmental tracer data from surface water and groundwater samples collected by the U.S. Geological Survey in Redwell Basin, an alpine watershed in the Elk Mountains near the town of Crested Butte, Colorado. The basin is underlain by interbedded shale and sandstone that have been variably hydrothermally altered and silicified by local magmatic intrusions. Samples were collected from 2017 to 2019 from bedrock monitoring wells completed at multiple depths, shallow hand-installed piezometers and mini boreholes, springs, mine adits, and streams. The tracer data include stable isotopes of water (oxygen-18 and deuterium), tritium, dissolved noble gases (He, Ne, Ar, Kr, Xe, and helium-3/helium-4 ratio), sulfur hexafluoride, and other dissolved atmospheric gases.
DOI: 10.5066/p9wc9j0m
title: Water, Soil, Rock, and Sediment Geochemistry Data from the Vicinity of Yellow Pine, Idaho, 2015-2017

description: Water and sediment samples were collected by the U.S. Geological Survey in cooperation with the U.S. Environmental Protection Agency at or near baseflow conditions from 2015-2017 in the East Fork South Fork Salmon River watershed near Yellow Pine, Valley County, Idaho. Soil, rock and tailings samples were collected in June 2015. Sampling focused on Cinnabar Creek, which flows through the Cinnabar mine site, and Sugar Creek, with additional sites selected to place the data into a larger watershed context. Grab samples were taken of the snowpack in January 2017. The water, soil, sediment, and rock samples were as described and the results are presented as separate water and solid data sets.
DOI: 10.5066/p9woei1n
title: Argon geochronology data for Multiproxy Cretaceous-Paleogene boundary event stratigraphy: an Umbria-Marche basin-wide perspective

description: This dataset accompanies publication 'Multiproxy Cretaceous-Paleogene boundary event stratigraphy: an Umbria-Marche basin-wide perspective'.
DOI: 10.5066/p9x33770
title: Principal facts of gravity data from the Stillwater Complex, Montana, 2013-2014 and 2020

description: Gravity data were collected during three separate campaigns during July of 2013, August and September of 2014, and September and October of 2020 at 168 sites on and around the Stillwater layered mafic complex in southern Montana. Measurements were taken with Lacoste & Romberg G-64, G-550, and G-161 gravimeters and reduced to obtain the complete Bouguer anomaly, with reference ties to absolute base stations at U.S. Post Offices in Spokane, Washington (2014), Billings (2013-2014) and Livingston (2020), Montana. This data release includes principal facts for 168 new gravity stations and shapefiles with field locations.
DOI: 10.5066/p9xandrn
title: Tellurium Deposits in the United States

description: This dataset is part of an ongoing effort by the U.S. Geological Survey (USGS) to understand the attributes and geologic distribution of critical mineral resources, both globally, and in particular, within the United States. The United States continues to become more dependent on imports to meet the domestic demands for an increasing number of mineral commodities. Many mineral commodities are now produced primarily or entirely outside of the United States, creating the potential for supply interruptions in the foreseeable future, or in the long term. These important but highly dependent mineral commodities are deemed critical and (or) strategic resources. As a part of the process set forth by Executive Order 13817, the USGS National Minerals Information Center (NMIC) identified tellurium as a critical mineral (Department of the Interior, 2018) due to the import reliance and importance in the sectors of defense, energy, and telecommunications (Fortier and others, 2018). Tellurium is principally recovered from anode slimes as a byproduct of electrolytic copper refining, and in the U.S., the main deposits of tellurium are likely the porphyry Cu deposits of the western U.S. This dataset was compiled to provide base layers of information that identify and describe the known tellurium deposits in the United States. This compilation is intended to contribute to our geologic understanding of tellurium deposits in the United States, and to assist in evaluating their resource potential. References Cited Department of the Interior, 2018, Final list of critical minerals 2018: Federal Register v. 83, no. 97, p. 23295-23296, https://www.federalregister.gov/d/2018-10667. Fortier, S.M., Nassar, N.T., Lederer, G.W., Brainard, Jamie, Gambogi, Joseph, and McCullough, E.A., 2018, Draft critical mineral list-Summary of methodology and background information-U.S. Geological Survey technical input document in response to Secretarial Order No. 3359: U.S. Geological Survey Open-File Report 2018-1021, 15 p., https://doi.org/10.3133/ofr20181021.