Ayuso, Robert A.

About the author

ORCID: 0000-0002-8496-9534
LCCN: n82223963
Mesoproterozoic, Aluminum, Antimony, Arsenic, Atomic absorption analysis, Atomic emission spectroscopy, Barium, Beryllium, Bismuth, Boron, Cadmium, Calcium, Carbon, Cerium, Cesium, Chemical analysis, Chlorine, Chromium, Cobalt, Contamination and pollution, Copper, Drilling and coring, Dysprosium, Economic geology, Erbium, Europium, Fission-track dating, Fluorine, Gadolinium, Gallium, Geochemistry, Geochronology, Geologic history, Geospatial datasets, Germanium, Gold, Groundwater quality, Hafnium, Holmium, Igneous rocks, Indium, Iridium, Iron, Isotopic analysis, Lanthanide series elements, Lanthanum, Lead, Lithium, Lutetium, Magnesium, Manganese, Maps and atlases, Mass spectroscopy, Mercury, Metallic mineral resources, Mineral deposits, Mineralogy, Molybdenum, Natural resource exploration, Neodymium, Neutron activation analysis, Nickel, Niobium, Palladium, Particle-beam spectroscopy, Petrography, Phosphorus, Platinum, Potassium, Praseodymium, Promethium, Radiometric dating, Rare earth elements, Reports, Rhodium, Rubidium, Rubidium-strontium analysis, Ruthenium, Samarium, Scandium, Selenium, Silicon, Silver, Sodium, Strontium, Study areas, Subsampling, Sulfur, Tantalum, Tellurium, Terbium, Thallium, Thorium, Thulium, Tin, Titanium, Tungsten, Uranium, Uranium-lead analysis, Vanadium, Volcanic rocks, Water properties, X-ray fluorescence, Ytterbium, Yttrium, Zinc, Zirconium, Mineral deposit areas, Reserves, Streams, Metasedimentary rock, DBF, Microsoft Access format, Microsoft Excel format, Portable Document Format, Comma-delimited text, File geodatabase (Esri), Shapefile, Tab-delimited text, Rare earths

Lead and strontium isotopes as monitors of anthropogenic contaminants in the surficial environment: Chapter 12

Isotopic discrimination can be an effective tool in establishing a direct link between sources of Pb contamination and the presence of anomalously high concentrations of Pb in waters, soils, and organisms. Residential wells supplying water containing up t

A geochemical isotopic (Nd-Pb) comparison of volcanic rocks erupted during the last 3,550 yrs. B.P. of interplinian activity of Somma-Vesuvius Volcano, southern Italy

Nd and Pb isotopic analyses from stratigraphic sampling from Somma-Vesuvius volcanic complex, Italy, during the last 3550 years point to contributions from heterogeneous lithosphere, continental crust, and magma mixing.

Pb isotopes and toxic metal abundances in the floodplain and stream sediments from the Volturno River basin (Campania, Italy); natural and anthropogenic contributions

An environmental study of a river basin. Includes geochemical and isotopic analyses in order to understand sources of contamination.

Geological assessment of cores from the Great Bay National Wildlife Refuge, New Hampshire

Gold deposits of the Carolina Slate Belt, southeastern United States--Age and origin of the major gold producers

Gold- and iron sulfide-bearing deposits of the southeastern United States have distinctive mineralogical and geochemical features that provide a basis for constructing models of ore genesis for exploration and assessment of gold resources. The largest (hi

Geochemical Database for Iron Oxide-Copper-Cobalt-Gold-Rare Earth Element Deposits of Southeast Missouri

Geochemical analysis of samples from IOCG-REE type deposits in this area to facilitate petrologic studies, mineral resource assessments, and the definition and statistics of geochemical baseline values. Data are provided in Microsoft Access, Microsoft Excel, and tab-delimited text formats.

Geochemical and Pb isotopic characterization of soil, groundwater, human hair, and corn samples from the Domizio Flegreo and Agro Aversano area (Campania region, Italy)

<p id="sp0080">A geochemical survey was carried out to investigate metal contamination in the Domizio Littoral and Agro Aversano area (Southern Italy) by means of soil, groundwater, human hair and corn samples. Pb isotope ratios were also determined to id

Beryllium—A critical mineral commodity—Resources, production, and supply chain

Beryllium is a lightweight metallic element used in a wide variety of specialty and industrial applications. As a function of its unique chemical and physical properties, such as a high stiffness-to-weight ratio, resistance to temperature extremes, and hi

GIS and data tables for focus areas for potential domestic nonfuel sources of rare earth elements

Locations of focus areas to be used for planning and collection of geophysical, geological, and topographic (lidar) data pertaining to the study of rare earth element resources in the US.

U-Pb Isotopic Data and Ages of Detrital Zircon Grains, Whole Rock Major and Trace-element Geochemistry, and Whole Rock Isotopic Data from Selected Rocks from the Western Alaska Range, Medfra area, and Livengood area, Alaska

U-Pb isotopic data and associated ages, whole rock major and trace-element geochemistry, and whole rock Sr, Nd, and Pb isotopic data to understand history and process of formation of these rocks. Data are provided in CSV format.

Geochemistry, geochronology, mineralogy, and geology suggest sources of and controls on mineral systems in the southern Toquima Range, Nye County, Nevada

Geochemical analysis of rock samples in DBF tables from the PLUTO database. Maps are provided in PDF only.

Geochemical and Modal Data for Mesoproterozoic Igneous Rocks of the St. Francois Mountains, Southeast Missouri

A compilation of new and previously published geochemical and modal analyses of Mesoproterozoic igneous rocks in this area. Includes major and trace element geochemistry and mineralogical composition as well as sample locations and characteristics. Data for 618 unaltered samples and 549 altered samples are provided as Microsoft Excel and as tab-delimited text.