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Knobloch coal resource unit - main coal bed split, 1999 National Coal Resource Assessment (knsplitg.shp) This ArcView shapefile contains a polygon representation of the Knobloch coal resource unit - main coal bed split. This theme was created specifically for the National Coal Resources Assessment in the Northern Rocky Mountains and Great Plains Region. Categories: Data, pre-SM502.8; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Ashland coalfield, Big Horn County, Knobloch coal resource unit, Montana, Powder River County, All tags... USGS Science Data Catalog (SDC), coal, coal-bed splitting, economy, environment, geoscientificInformation, nca2000, nrockiescoal, powderbasincoal, Fewer tags Faults in the Lower White River coal field, Colorado Plateau (lwrfltg) This file depicts the geologic faults contained within the Lower White River coal field. Categories: Data, pre-SM502.8; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Colorado Plateau, Colorado Plateau, Deserado, Deserado, Faults, All tags... Lower White River, Lower White River, Piceance Basin, Piceance Basin, USGS Science Data Catalog (SDC), coal, cplateaucoal, economy, environment, geoscientificInformation, lwhiterivercoal, nca2000, Fewer tags National Assessment of Oil and Gas Project - Powder River Basin Province (033) Slack Lineaments This dataset represents lineaments in the Powder River Basin as identified in the following publication: Slack, P. B., 1981, Paleotectonics and hydrocarbon accumulation, Powder River basin, Wyoming: American Association of Petroleum Geologists Bulletin, v. 65, no. 4, p. 730-743. A lineament is defined as a linear topographic feature of regional extent that is believed to reflect crustal structure (Hobbs et al., 1976, p. 267). Lineament features were transferred from the publication to a hard-copy base map by province geologist, then digitized and referenced for use in a Geographic Information System (GIS). Lineaments may: 1) enhance secondary reservoir permeability and 2) provide migration pathways in unconventional... Categories: Data, pre-SM502.8; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: 503301 = Tertiary-Upper Cretaceous Coalbed Methane, 50330101 = Eastern Basin Margin Upper Fort Union Sandstone, 50330181 = Wasatch Formation, 50330182 = Upper Fort Union Formation, 50330183 = Lower Fort Union-Lance Formations, All tags... 503302 = Mowry, 50330261 = Mowry Continuous Oil Assessment Unit, 503303 = Niobrara, 50330361 = Niobrara Continuous Oil Assessment Unit, 503304 = Cretaceous Biogenic Gas, 50330461 = Shallow Continuous Biogenic Gas Assessment Unit, Coalbed methane resources, Earth Science, Economic geology, Energy Resources, Gas hydrate resources, Geology, MT, Mature Source Rock, National Assessment of Oil and Gas, Natural Gas, Natural Resources, Natural gas resources, Oil, Oil sand resources, Oil shale resources, Pod(s) of Mature Source Rock, Powder River Basin, Powder River Basin, Resource Assessment, Rocky Mountains and Northern Great Plains, Schenk, C.J., Total Petroleum System, U.S. Geological Survey, US30 = Montana, US56 = Wyoming, USGS, USGS Science Data Catalog (SDC), USGS World Energy Region 5, USGS World Energy Region 5, United States, WY, geoscientificInformation, noga2000, nogapowder, oilgas, Fewer tags Powder River Basin boundary, 1999 Coal Resource Assessment (prbbndg.shp) This ArcView shapefile contains a polygon representing the boundary of the Powder River Basin based on a generalized contact of Cretaceous and Tertiary rocks. This theme was created specifically for the National Coal Resource Assessment in the Northern Rocky Mountains and Great Plains Region. Categories: Data, pre-SM502.8; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Basin, Big Horn County, Campbell County, Coal, Converse County, All tags... Crook County, Custer County, Johnson County, Montana, NCRA Assessment Area, Natrona County, Niobrara County, Northern Rocky Mountain and Great Plains Fort Union Coal Resources Assessment, Northern Rocky Mountain and Great Plains Region, Powder River Basin, Powder River Basin, Powder River Basin boundary, Powder River County, Rosebud County, Sheridan County, Tertiary, Treasure County, USGS National Coal Resource Assessment, USGS Science Data Catalog (SDC), Weston County, Wyoming, coal, economy, environment, geoscientificInformation, nca2000, nrockiescoal, powderbasincoal, Fewer tags U.S. Forest Service land in the Powder River Basin (prbfsg.shp) This shapefile contains a representation forest service land in the Powder River Basin. This theme was created specifically for the National Coal Resources Assessment in the Northern Rocky Mountains and Great Plains Region. Categories: Data, pre-SM502.8; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Ashland Coalfield, Big Horn County, Forest Service, Knobloch Coal Zone, Montana, All tags... Northern Rocky Mountains and Great Plains Fort Union Coal Resources Assessment, Northern Rocky Mountains and Great Plains Fort Union Coal Resources Assessment, Powder River Basin, Powder River Basin, Powder River County, Surface Management, Surface Ownership, USGS Science Data Catalog (SDC), coal, economy, environment, geoscientificInformation, nca2000, nrockiescoal, powderbasincoal, Fewer tags Unioned layer of Sheridan coalfield, Wyodak-Anderson, Wyoming (shrfing.shp) This ArcView shapefile contains a polygon representation of numerous themes associated with the Wyodak-Anderson coal zone in the Sheridan coalfield. The purpose of this theme is to allow the user to perform multiple theme queries. This theme was created specifically for the National Coal Resource Assessment in the Northern Rocky Mountains and Great Plains Region. Categories: Data, pre-SM502.8; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Coal, Northern Rocky Mountains and Great Plains Fort Union Coal Resources Assessment, Northern Rocky Mountains and Great Plains Region, Powder River Basin, Sheridan County, All tags... Sheridan coalfield, Sheridan coalfield, Spatial query layer, USGS National Coal Resource Assessment, USGS Science Data Catalog (SDC), Union coverage, Wyodak-Anderson coal zone, Wyoming, coal, economy, environment, geoscientificInformation, nca2000, nrockiescoal, powderbasincoal, Fewer tags Overburden above the Hanna 77, 78, 79 and 81 coal zones, Hanna Basin, Wyoming (ha*ovbg) These ArcView shapefiles contain representations of the overburden thckness above the Hanna 77, 78, 79 and 81 coal zones in the Hanna coalfield, Hanna Basin, Wyoming. These shapefiles were created specifically for the National Coal Resource Assessment in the Northern Rocky Mountains and Great Plains Region. Categories: Data, pre-SM502.8; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Carbon County, Coal, Hanna 77 coal zone, Hanna 77 study limit, Hanna 78 coal zone, All tags... Hanna 78 study limit, Hanna 79 coal zone, Hanna 79 study limit, Hanna 81 coal zone, Hanna 81 study limit, Hanna Basin, Hanna Formation, Hanna coalfield, Minimum overburden, Northern Rocky Mountain and Great Plains Fort Union Coal Resources Assessment, Northern Rocky Mountains and Great Plains Region, Overburden, Overburden isopach map, Overburden thickness, USGS Science Data Catalog (SDC), Wyoming, coal, economy, environment, geoscientificInformation, hannabasincoal, nca2000, nrockiescoal, Fewer tags Coal fields and outlines of coal-bearing strata in the Colorado Plateau coal assessment study area (cpcf*g) These are shapefiles and ARC/INFO coverages of coal fields and coal-bearing formations in the Colorado Plateau. These GIS layers were created by combining numerous ARC/INFO coverages created for the Colorado Plateau coal assessment. The coal field outlines are approximate boundaries based on criteria provided below under Data Quality Information, Process Steps. These coal field outlines may not overlap exactly with other published coal field boundaries or with criteria used in the geochemistry data. We used existing polygons taken from numerous digital geologic maps, as described in Process Steps, but did not use overburden cutoffs. Categories: Data, pre-SM502.8; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arizona, Colorado, Colorado Plateau, Colorado Plateau, Colorado Plateau coal assessment, All tags... Colorado Plateau coal assessment study area, NCRA Assessment Area, NCRA assessment type, NCRA study areas, National Coal Resource Assessment (NCRA), New Mexico, USGS Science Data Catalog (SDC), Utah, coal, coal extent, coal fields, coal rank, coal-bearing formations, cplateaucoal, economy, environment, geoscientificInformation, land-use planning, nca2000, Fewer tags Geologic Provinces of Africa, 2000 (prv7_2ag) This coverage includes arcs, polygons and polygon labels that describe U.S. Geological Survey defined geologic provinces of the Africa. Each province has a set of geologic characteristics distinguishing it from surrounding provinces. These characteristics may include the dominant lithologies, the age of the strata, and the structural style. Some provinces include multiple genetically-related basins. Offshore province boundaries are generally defined by the 2000 meter bathymetric contour, but where appropriate are defined by the 4000 meter bathymetric contour. In some cases province boundaries are delineated by political boundaries, as in the case of The United States and Canada, because United States petroleum resources... Categories: Data, pre-SM502.8; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Aaiun-Tarfaya Basin, Province 2066, Abu Gharadiq Basin, Province 2038, Africa, Amhara Plateau, Province 7161, Atlas Basin, Province 2062, All tags... Atlas Uplift, Province 2053, Baffa, Province 7105, Benue, Province 7136, Canary Islands, Province 2065, Chad, Province 7066, Cyrenacia Basin, Province 2041, Cyrenaica Uplift, Province 2040, Damer Belt, Province 7311, Earth Science, East African Rift, Province 7246, East Kalahari Precambrian Belt, Province 7331, East Zaire Precambrian Belt, Province 7231, Economic geology, Erdis Kufra, Province 7075, Essaouni Basin, Province 2064, Etosha, Province 7285, Fezzan Uplift, Province 2046, Gas province, Geologic province, Geology, Grand Erg/Ahnet Basin, Province 2058, Guercif Basin, Province 2069, Gulf of Guinea, Province 7183, Hamra Basin, Province 2047, Hauts Basin, Province 2051, Hoggar, Province 7041, Illizi Basin, Province 2056, Iullemmeden, Province 7055, Kalahari, Province 7325, Karoo, Province 7355, Khartoum, Province 7087, Luffillian Arc, Province 7291, Madagascar Offshore, Province 7403, Madagascar, Province 7381, Mediterranean Basin, Province 2070, Morondava, Province 7373, Mozambique Coastal, Province 7343, Murzuk Basin, Province 2045, Natural Gas, Natural Resources, Natural gas resources, Nefusa Uplift, Province 2049, Niger Delta, Province 7192, Nigerian Massive, Province 7121, Nile Delta Basin, Province 2035, North Egypt Basin, Province 2039, North Red Sea Shield, Province 2073, Nubian Uplift, Province 2044, Oil, Oil and gas province, Oil and gas resource assessment, Oil province, Oil sand resources, Oil shale resources, Orange River Coastal, Province 7303, Ougarta Uplift, Province 2061, Pelagian Basin, Province 2048, Petroleum, Rabat Basin, Province 2063, Red Sea Basin, Province 2071, Reggane Basin, Province 2060, Reguibate Uplift, Province 2068, Resource Assessment, Rif Basin, Province 2072, Senegal, Province 7013, Seychelles, Province 7417, Sirte Basin, Province 2043, Somali Deep Sea, Province 7263, Somali, Province 7255, South African Coastal, Province 7363, South Red Sea Shield, Province 7091, Sud, Province 7146, Syrian Arch, Province 2036, Tamatave, Province 7396, Tanzania Coastal, Province 7273, Taoudeni Basin, Province 7035, Tellian Foredeep, Province 2052, Tellian Uplift, Province 2050, Thiemboka Uplift, Province 2057, Tindouf Basin, Province 2067, Trias/Ghadames Basin, Province 2054, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), Upper Egypt Basin, Province 2037, Volta, Province 7114, West African Coastal, Province 7173, West African Shield, Province 7021, West Zaire Precambrian Belt, Province 7211, West-Central Coastal, Province 7203, Western Nubian Shield, Province 7151, Zaire, Province 7225, africa, environment, geoscientificInformation, oilgas, wep, worldgeologicmaps, Fewer tags Zebra Mussel Mortality - Assessment of uncontained Zequanox applications in a Midwestern lake data We applied Zequanox using a custom-engineered, boat mounted application system to replicated 0.30 Hectare plots within a small inland lake. The objectives of these applications were to determine if uncontained, open-water Zequanox applications could effectively control zebra mussel populations and protect native unionid mussel populations within zebra mussel infested systems. The datasets included are as follows: Exposure Water Chemistry Hardness and Alkalinity Native Mussel Sonde Water Chemistry Zebra Mussel Density Zebra Mussel Length Zebra Mussel Mortality Zequanox Concentration ShapeFiles: PLOTS, UNIONID, ZEQUANOX CONCENTRATION, ZM_DENSITY, ZM_MORTALITY Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Round Lake, Emmet County, Michigan, USA, USGS Science Data Catalog (SDC), Zebra Mussel, Zequanox USGS Denver Micro-fossil collection: Fossil Algae The Denver fossil algae database were gathered from the inception of Denver Region in 1953 by Richard Rezak. His specialty was algae, carbonate platforms, and off-shore modern reefs. He developed a very useful litho-stratigraphic tool while studying Proterozoic algae and stromatolites in Glacier National Park. This lead to his studies of modern analogs in the Caribbean and South Seas. His catalogs were converted into digital form, Excel and Filemaker Pro database. The Catalog consist of 1001 fossil localities. His supplementary data has been added whenever possible - sources field map locality points, E&R files with enhanced faunal lists, as well as formal publications Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Eastern Asia, USGS Science Data Catalog (SDC), United States, algae, biota, All tags... fossils, litho-stratigraphy, none, stromatolites, Fewer tags Airborne Geophysical Surveys over the Eastern Adirondacks, New York State Airborne geophysical surveys were conducted in the eastern Adirondacks from Dec. 7, 2015 - Dec. 21, 2015, by Goldak Airborne Surveys. The area was flown along a draped surface with a nominal survey height above ground of 200 meters. The flight line spacing was 250 meters for traverse lines and 2500 meters for control lines. Here we present downloadable magnetic and radiometric (gamma spectrometry) data from those surveys as image (Geotiff) and flight line data (csv format). Background The Eastern Adirondacks region was known for iron mining in the 1800's and 1900's but it also contains deposits of rare earth minerals. Rare earth minerals are used in advanced technology such as in cell phones, rechargeable batteries... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Adirondack Mountains, CGGSC, Crustal Geophysics and Geochemistry Science Center, Essex County, Geophysics, All tags... MRP, Mineral Resources, Mineral Resources Program, New York, Remote Sensing, USGS Science Data Catalog (SDC), United States, aeromagnetic maps, aeromagnetic surveying, aeroradiometric surveying, airborne magnetics, economy, geologic mapping, geologic maps, geoscientificInformation, magnetic anomaly maps, magnetic field (earth), magnetics, mineral resources, mineral resources, subsurface imaging, subsurface maps, Fewer tags Audiomagnetotelluric sounding data, stations 1-9, Taos Plateau Volcanic Field, New Mexico, 2009 This dataset includes the audio-magnetotelluric (AMT) sounding data collected in 2009 in and near the San Luis Basin, New Mexico. The U.S. Geological Survey conducted a series of multidisciplinary studies, including AMT surveys, in the San Luis Basin to improve understanding of the hydrogeology of the Santa Fe Group and the nature of the sedimentary deposits comprising the principal groundwater aquifers of the Rio Grande rift. The shallow unconfined and the deeper confined Santa Fe Group aquifers in the San Luis Basin are the main sources of municipal water for the region. The population of the San Luis Basin region is growing rapidly and water shortfalls could have serious consequences. Future growth and land management... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: AMT, Cerro, Cerro De La Olla, GGGSC, GPS measurement, All tags... Geology, Geophysics, and Geochemistry Science Center, Geophysics, Guadalupe Mountain, Hydrogeology, MRP, MT, Mineral Resources Program, New Mexico, No Agua Peaks, Questa, Rio Grande, Rio Grande Basin, Rio Grande rift, San Luis Basin, Sangre de Cristo Mountains, Santa Fe Group, Taos County, Taos Plateau Volcanic Field, USGS Science Data Catalog (SDC), Water Resources, apparent resistivity, aquifer, audiomagnetotelluric, deformation (geologic), electromagnetic surveying, geologic framework, geophysics, geoscientificInformation, groundwater, hydrogeology, impedance, impedance phase, impedance strike, magnetic field (earth), magnetic surveying, magnetotelluric surveying, regional fluid flow, sedimentary deposits, sedimentation, sounding, tipper, Fewer tags Pb-Pb and U-Pb data of Proterozoic to Phanerozoic cassiterite deposits in Russia Cassiterite (SnO2), a main ore mineral in tin deposits, was collected by multiple Russian geologists or obtained from museum collections in both the USA and Russia and dated at the U.S. Geological Survey. The dated samples represent four different mining districts spanning the entire country from the village of Pitkäranta in the west (31° E Longitude) to the Merekskoe Deposit in the Russian Far East (134°E Longitude). The samples were recovered from a variety of host deposit types that range from the Proterozoic to Phanerozoic. Cassiterite (in the form of mounted loose grains) was prepared and analyzed for direct age dating on a laser ablation inductively coupled plasma mass spectrometer (LA-ICP-MS) system at the... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: GGGSC, Geology, Geophysics, and Geochemistry Science Center, LA-ICP-MS, MRP, Mineral Resources Program, All tags... Pitkäranta, Russia, Siberia, U-Pb, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), cassiterite, geochronology, geoscientificInformation, laser ablation inductively coupled plasma mass spectrometer, lead, mineral deposits, thorium, uranium, uranium-lead analysis, Fewer tags Root thread strength, landslide headscarp geometry, and observed root characteristics at the monitored CB1 landslide, Oregon, USA This data release supports interpretations of field-observed root distributions within a shallow landslide headscarp (CB1) located below Mettman Ridge within the Oregon Coast Range, approximately 15 km northeast of Coos Bay, Oregon, USA. (Schmidt_2021_CB1_topo_far.png and Schmidt_2021_CB1_topo_close.png). Root species, diameter (greater than or equal to 1 mm), general orientation relative to the slide scarp, and depth below ground surface were characterized immediately following landsliding in response to large-magnitude precipitation in November 1996 which triggered thousands of landslides within the area (Montgomery and others, 2009). The enclosed data includes: (1) tests of root-thread failure as a function of... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Botany, Forestry, Geomorphology, Oregon, Soil Sciences, All tags... Southern Oregon Coastal, USGS Science Data Catalog (SDC), United States, biota, environment, geoscientificInformation, landslide, landslide susceptibility assessment, plant, root, Fewer tags Magnetotelluric data from northern Harrat Rahat, Saudi Arabia, 2016 This dataset consists of 122 magnetotelluric (MT) soundings collected in 2016 in the northern Harrat Rahat, located near the holy city of Al-Madinah Al-Munawarah in Saudi Arabia. These data were collected as part of a joint project between the U.S. Geological Survey and the Saudi Geological Survey examining the volcanic hazard associated with the harrat. Imaging the 3-D electrical resistivity structure of the crust and upper mantle beneath the harrat will help in understanding the magmatic system at depth. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Earth magnetic field, Electromagnetic surveying, GGGSC, Geology, Geophysics, and Geochemistry Science Center, Geophysics, All tags... Geophysics, GeoscientificInformation, MT, Saudi Arabia, USGS Science Data Catalog (SDC), VHP, Volcano Hazards Program, Volcanology, apparent resistivity, conductivity, impedance, magnetotellurics, phase, time series, tipper, Fewer tags Passive seismic depth to bedrock data collected along streams of the Farmington River watershed, CT, USA Using the horizontal-to-vertical spectral-ratio (HVSR) method, we infer regolith thickness (i.e., depth to bedrock) throughout the Farmington River Watershed, CT, USA. Between Nov. 2019 and Nov. 2020, MOHO Tromino Model TEP-3C (MOHO, S.R.L.) three-component seismometers collected passive seismic recordings along the Farmington River and the upstream West Branch of Salmon Brook. From these recordings, we derived resonance frequencies using the GRILLA software (MOHO, S.R.L.), and then inferred potential regolith thicknesses based on likely shear wave velocities, Vs, intrinsic to the underlying sediment. Three potential shear wave velocities (Vs = 300m/s, 337m/s, 362 m/s) were considered for Farmington River watershed... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Connecticut, Farmington River, Hydrology, USGS Science Data Catalog (SDC), groundwater, All tags... groundwater and surface-water interaction, health, hydrogeology, hydrology, imageryBaseMapsEarthCover, regolith thickness, surface water (non-marine), Fewer tags Biogeochemical and source characteristics of preferential groundwater discharge in the Farmington River watershed (Connecticut and Massachusetts, 2017 - 2021) We used spatial data from previously mapped preferential groundwater discharges throughout the Farmington River watershed in Connecticut and Massachusetts (https://doi.org/10.5066/P915E8JY) to guide water sample collection at known locations of groundwater discharging to surface water. In 2017 and 2019 - 2021, samples were collected during general river baseflow conditions (July – November, <30.9 cms mean daily discharge (USGS gage 01189995, statistics 2010-2022) when the riverbank discharge points were exposed. We collected a suite of dissolved constituents and stable isotopes of water directly in the shallow saturated sediments of active points of discharge, and coincident stream chemical samples were also collected... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Connecticut, Farmington River, Hydrology, Massachusetts, USGS Science Data Catalog (SDC), All tags... groundwater, groundwater and surface-water interaction, groundwater and surface-water interaction, inlandWaters, nutrient content (water), Fewer tags Mean of the Top Ten Percent of NDVI Values in the Yuma Proving Ground during Monsoon Season, 1986-2011 This study uses growth in vegetation during the monsoon season measured from LANDSAT imagery as a proxy for measured rainfall. NDVI values from 26 years of pre- and post-monsoon season Landsat imagery were derived across Yuma Proving Ground (YPG) in southwestern Arizona, USA. The LANDSAT imagery (1986-2011) was downloaded from USGS’s GlobeVis website (http://glovis.usgs.gov/). Change in NDVI was calculated within a set of 2,843 Riparian Area Polygons (RAPs) up to 1 km in length defined in ESRI ArcMap 10.2. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arizona, Landsat TM, NDVI, Normalized Difference Vegetation Index, Sonoran Desert, All tags... Southwestern United States, USGS Science Data Catalog (SDC), Yuma Proving Ground, biota, climatologyMeteorologyAtmosphere, ephemeral stream channels, monsoon season, Fewer tags Density and magnetic properties of selected plutons (granitoids) in the Great Basin, parts of Arizona, California, Idaho, Nevada, Oregon, and Utah The U.S. Geological Survey (USGS) collected over 1,840 physical property measurements on selected plutons in the Great Basin, primarily in California and Nevada. Data include station identifier, geographic coordinates, rock type, density, magnetic susceptibility, remanent magnetization, declination, and inclination where available. Data are presented in ASCII format and include density and magnetic property data in pluton_data.csv, a data dictionary describing the data fields in data_dictionary.csv, and a rock data dictionary listing rock types in rock_dictionary.csv. Preliminary results and interpretation were described by Ponce and others (2010) and some samples are from Sikora and others (1991). References: Ponce,... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Density, Energy Resources, Geophysical studies, Geophysics, Great Basin, parts of California, Nevada, Oregon, Utah, and Arizona, All tags... Magnetic properties, Mineral Resources, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), Volcanology, geoscientificInformation, Fewer tags « 1 2 3 4 5 ... 28 »