Item talk:Q48292
From geokb
ORCID:
'@context': http://schema.org '@id': https://orcid.org/0000-0003-4190-0278 '@reverse': creator: '@id': https://doi.org/10.3390/min11111166 '@type': CreativeWork identifier: '@type': PropertyValue propertyID: doi value: 10.3390/min11111166 name: 'Pb-Pb and U-Pb Dating of Cassiterite by In Situ LA-ICPMS: Examples Spanning ~1.85 Ga to ~100 Ma in Russia and Implications for Dating Proterozoic to Phanerozoic Tin Deposits' '@type': Person familyName: Neymark givenName: leonid mainEntityOfPage: https://orcid.org/0000-0003-4190-0278
OpenAlex:
created_date: '2023-07-21' display_name: Leonid A. Neymark display_name_alternatives: - Leonid A. Neymark - Leonid Neymark - L. Neymark - L. A. Neymark ids: openalex: https://openalex.org/A5050939502 orcid: https://orcid.org/0000-0003-4190-0278 last_known_institutions: - country_code: US display_name: United States Geological Survey id: https://openalex.org/I1286329397 lineage: - https://openalex.org/I1286329397 - https://openalex.org/I1335927249 ror: https://ror.org/035a68863 type: government orcid: https://orcid.org/0000-0003-4190-0278 topics: - count: 51 display_name: Tectonic and Geochronological Evolution of Orogens domain: display_name: Physical Sciences id: https://openalex.org/domains/3 field: display_name: Earth and Planetary Sciences id: https://openalex.org/fields/19 id: https://openalex.org/T10001 subfield: display_name: Geophysics id: https://openalex.org/subfields/1908 - count: 36 display_name: Machine Learning for Mineral Prospectivity Mapping domain: display_name: Physical Sciences id: https://openalex.org/domains/3 field: display_name: Computer Science id: https://openalex.org/fields/17 id: https://openalex.org/T12157 subfield: display_name: Artificial Intelligence id: https://openalex.org/subfields/1702 - count: 35 display_name: Climate Change and Paleoclimatology domain: display_name: Physical Sciences id: https://openalex.org/domains/3 field: display_name: Earth and Planetary Sciences id: https://openalex.org/fields/19 id: https://openalex.org/T10017 subfield: display_name: Atmospheric Science id: https://openalex.org/subfields/1902 - count: 17 display_name: Seismicity and Tectonic Plate Interactions domain: display_name: Physical Sciences id: https://openalex.org/domains/3 field: display_name: Earth and Planetary Sciences id: https://openalex.org/fields/19 id: https://openalex.org/T10110 subfield: display_name: Geophysics id: https://openalex.org/subfields/1908 - count: 17 display_name: Geochemistry and Petrology of Gemstones domain: display_name: Physical Sciences id: https://openalex.org/domains/3 field: display_name: Earth and Planetary Sciences id: https://openalex.org/fields/19 id: https://openalex.org/T13443 subfield: display_name: Geochemistry and Petrology id: https://openalex.org/subfields/1906 - count: 12 display_name: Chemistry of Actinide and Lanthanide Elements domain: display_name: Physical Sciences id: https://openalex.org/domains/3 field: display_name: Chemistry id: https://openalex.org/fields/16 id: https://openalex.org/T10973 subfield: display_name: Inorganic Chemistry id: https://openalex.org/subfields/1604 - count: 9 display_name: Environmental Impacts of Fukushima Nuclear Disaster domain: display_name: Physical Sciences id: https://openalex.org/domains/3 field: display_name: Environmental Science id: https://openalex.org/fields/23 id: https://openalex.org/T11089 subfield: display_name: Global and Planetary Change id: https://openalex.org/subfields/2306 - count: 8 display_name: Mantle Dynamics and Earth's Structure domain: display_name: Physical Sciences id: https://openalex.org/domains/3 field: display_name: Earth and Planetary Sciences id: https://openalex.org/fields/19 id: https://openalex.org/T10413 subfield: display_name: Geophysics id: https://openalex.org/subfields/1908 - count: 8 display_name: Stable Isotope Analysis of Groundwater and Precipitation domain: display_name: Physical Sciences id: https://openalex.org/domains/3 field: display_name: Earth and Planetary Sciences id: https://openalex.org/fields/19 id: https://openalex.org/T10398 subfield: display_name: Geochemistry and Petrology id: https://openalex.org/subfields/1906 - count: 8 display_name: Groundwater Flow and Transport Modeling domain: display_name: Physical Sciences id: https://openalex.org/domains/3 field: display_name: Environmental Science id: https://openalex.org/fields/23 id: https://openalex.org/T10894 subfield: display_name: Environmental Engineering id: https://openalex.org/subfields/2305 - count: 5 display_name: Application of Stable Isotopes in Trophic Ecology domain: display_name: Physical Sciences id: https://openalex.org/domains/3 field: display_name: Environmental Science id: https://openalex.org/fields/23 id: https://openalex.org/T12073 subfield: display_name: Ecology id: https://openalex.org/subfields/2303 - count: 5 display_name: Geological Evolution of the Arctic Region domain: display_name: Physical Sciences id: https://openalex.org/domains/3 field: display_name: Earth and Planetary Sciences id: https://openalex.org/fields/19 id: https://openalex.org/T13193 subfield: display_name: Geology id: https://openalex.org/subfields/1907 - count: 5 display_name: Sources and Effects of Ionizing Radiation on Human Health domain: display_name: Health Sciences id: https://openalex.org/domains/4 field: display_name: Health Professions id: https://openalex.org/fields/36 id: https://openalex.org/T10946 subfield: display_name: Radiological and Ultrasound Technology id: https://openalex.org/subfields/3614 - count: 4 display_name: Paleoceanography and Geology of the Black Sea domain: display_name: Physical Sciences id: https://openalex.org/domains/3 field: display_name: Earth and Planetary Sciences id: https://openalex.org/fields/19 id: https://openalex.org/T14047 subfield: display_name: Oceanography id: https://openalex.org/subfields/1910 - count: 4 display_name: Water Quality and Hydrogeology Research domain: display_name: Physical Sciences id: https://openalex.org/domains/3 field: display_name: Environmental Science id: https://openalex.org/fields/23 id: https://openalex.org/T12773 subfield: display_name: Water Science and Technology id: https://openalex.org/subfields/2312 - count: 4 display_name: Toxicology and Environmental Impacts of Mercury Contamination domain: display_name: Physical Sciences id: https://openalex.org/domains/3 field: display_name: Environmental Science id: https://openalex.org/fields/23 id: https://openalex.org/T10819 subfield: display_name: Health, Toxicology and Mutagenesis id: https://openalex.org/subfields/2307 - count: 4 display_name: Environmental Impact of Heavy Metal Contamination domain: display_name: Physical Sciences id: https://openalex.org/domains/3 field: display_name: Environmental Science id: https://openalex.org/fields/23 id: https://openalex.org/T10139 subfield: display_name: Pollution id: https://openalex.org/subfields/2310 - count: 4 display_name: Geochemistry of Manganese Oxides in Sedimentary Environments domain: display_name: Physical Sciences id: https://openalex.org/domains/3 field: display_name: Earth and Planetary Sciences id: https://openalex.org/fields/19 id: https://openalex.org/T11740 subfield: display_name: Geochemistry and Petrology id: https://openalex.org/subfields/1906 - count: 4 display_name: Sedimentary Processes in Earth's Geology domain: display_name: Physical Sciences id: https://openalex.org/domains/3 field: display_name: Earth and Planetary Sciences id: https://openalex.org/fields/19 id: https://openalex.org/T10965 subfield: display_name: Earth-Surface Processes id: https://openalex.org/subfields/1904 - count: 3 display_name: Characterization of Shale Gas Pore Structure domain: display_name: Physical Sciences id: https://openalex.org/domains/3 field: display_name: Engineering id: https://openalex.org/fields/22 id: https://openalex.org/T10399 subfield: display_name: Mechanics of Materials id: https://openalex.org/subfields/2211 - count: 2 display_name: Global Methane Emissions and Impacts domain: display_name: Physical Sciences id: https://openalex.org/domains/3 field: display_name: Environmental Science id: https://openalex.org/fields/23 id: https://openalex.org/T11588 subfield: display_name: Global and Planetary Change id: https://openalex.org/subfields/2306 - count: 2 display_name: Diversity and Applications of Cyperus Species domain: display_name: Life Sciences id: https://openalex.org/domains/1 field: display_name: Agricultural and Biological Sciences id: https://openalex.org/fields/11 id: https://openalex.org/T13015 subfield: display_name: Plant Science id: https://openalex.org/subfields/1110 - count: 2 display_name: Importance of Mangrove Ecosystems in Coastal Protection domain: display_name: Physical Sciences id: https://openalex.org/domains/3 field: display_name: Environmental Science id: https://openalex.org/fields/23 id: https://openalex.org/T10779 subfield: display_name: Ecology id: https://openalex.org/subfields/2303 - count: 2 display_name: Formation and Evolution of the Solar System domain: display_name: Physical Sciences id: https://openalex.org/domains/3 field: display_name: Physics and Astronomy id: https://openalex.org/fields/31 id: https://openalex.org/T10325 subfield: display_name: Astronomy and Astrophysics id: https://openalex.org/subfields/3103 - count: 2 display_name: Landslide Hazards and Risk Assessment domain: display_name: Physical Sciences id: https://openalex.org/domains/3 field: display_name: Environmental Science id: https://openalex.org/fields/23 id: https://openalex.org/T10535 subfield: display_name: Management, Monitoring, Policy and Law id: https://openalex.org/subfields/2308 updated_date: '2024-05-20T02:16:05.532253'
USGS Staff Profile:
'@context': https://schema.org '@type': Person affiliation: - '@type': Organization name: American Geophysical Union - '@type': Organization name: Geological Society of America - '@type': Organization name: International Geochemistry Association - '@type': Organization name: Geochemical Society description: - '@type': TextObject abstract: Research Chemist with the Geology, Geophysics, and Geochemistry Science Center additionalType: short description - '@type': TextObject abstract: Leonid Neymark is a Scientist Emeritus with the Geology, Geophysics, and Geochemistry Science Center. additionalType: staff profile page introductory statement - '@type': TextObject abstract: 'I am currently a Scientist Emeritus in the Geology, Geophysics, and Geochemistry Science Center after being transferred from the Geochemistry Team, Yucca Mountain Project Branch where I conducted U-series studies of soils, fracture minerals and water-rock interaction processes.I conduct a wide spectrum of isotope-geochemical studies involving radiogenic isotopes of U, Pb, Sr, and Nd and using ICP-MS and TIMS techniques. Before 2010 I was a principal investigator and a member of the Geochemistry Team in the Yucca Mountain Project Branch, WRD. The teams task was to evaluate geochemical aspects of the hydrogeologic suitability of Yucca Mountain to permanently store high-level radioactive waste. My focus was on the history of secondary mineral deposition (largely calcite and silica) in soil and unsaturated- and saturated-zone settings and on isotope-geochemical indicators of water-rock interaction as evidence of past water flow. These studies used U-Pb and U-series and other isotope-geochemical methods to characterize the timing of low-temperature surface processes of mineral deposition and to evaluate past water-rock interaction. In 2004 I was closely involved in the installation and detailed testing of a new ThermoFinnigan thermal-ionization mass-spectrometer Triton. I developed reproducible mass-spectrometric methods of U-series isotope measurements for whole rock samples with large Th/U and 232Th/230Th ratios. Previous YMPB work included systematic characterization of subsurface and soil hydrogenic minerals to provide a basis for understanding past hydrologic and climate variability in the Yucca Mountain region.Current ProjectsSources of Pb contamination in domestic well water in SW MissouriMatrix Pore Waters - Ultracentrifugation Method for Low-Permeability Sedimentary and Crystalline RocksThe U-Th-Pb whole-rock isotope system in the Chalk River core and past redox conditionsImpact of Exhalative Hydrothermal Systems on Marine Chemistry: Applications for Mineral AssessmentConditions and Processes Affecting Radionuclide Transport (writing a chapter for the GSA Memoir devoted to Yucca Mountain, volume 2' additionalType: personal statement email: lneymark@usgs.gov hasCredential: - '@type': EducationalOccupationalCredential name: Ph.D. in Geochemistry, St. Petersburg, Russia - '@type': EducationalOccupationalCredential name: MS degree in Radiochemistry, St. Petersburg, Russia hasOccupation: - '@type': OrganizationalRole affiliatedOrganization: '@type': Organization name: Geology, Geophysics, and Geochemistry Science Center url: https://www.usgs.gov/centers/gggsc roleName: Research Chemist startDate: '2024-05-12T16:21:23.845295' - '@type': Occupation additionalType: self-claimed professional experience name: Research Chemist, Geology, Geophysics, and Geochemistry Science Center, USGS - '@type': Occupation additionalType: self-claimed professional experience name: Principal investigator and member of the Geochemistry Team in the Yucca Mountain Project Branch, USGS - '@type': Occupation additionalType: self-claimed professional experience name: 2001-2004. S.M. Stoller Corporation, Senior Geochemist - '@type': Occupation additionalType: self-claimed professional experience name: 1996-2001. Pacific Western Technologies, Ltd. Senior Scientist - '@type': Occupation additionalType: self-claimed professional experience name: 1993-1996. US Geological Survey Visiting Research Scientist - '@type': Occupation additionalType: self-claimed professional experience name: 1985-1993. Institute of Precambrian Geology and Geochronology (IPGG), St. Petersburg, Russian Academy of Sciences - '@type': Occupation additionalType: self-claimed professional experience name: 1971-1985. All Union Geological Research Institute, Leningrad (USSR Ministry of Geology). Engineer (1971-1981) and Junior Research Scientist (1981-1985) identifier: - '@type': PropertyValue propertyID: GeoKB value: https://geokb.wikibase.cloud/entity/Q48292 - '@type': PropertyValue propertyID: ORCID value: 0000-0003-4190-0278 jobTitle: Research Chemist knowsAbout: - '@type': Thing additionalType: self-claimed expertise name: geochemistry - '@type': Thing additionalType: self-claimed expertise name: soil chemistry - '@type': Thing additionalType: self-claimed expertise name: water chemistry - '@type': Thing additionalType: self-claimed expertise name: mineral resources - '@type': Thing additionalType: self-claimed expertise name: isotopic analysis - '@type': Thing additionalType: self-claimed expertise name: isotope geochemistry - '@type': Thing additionalType: self-claimed expertise name: geochronology memberOf: '@type': OrganizationalRole member: '@type': Organization name: U.S. Geological Survey name: staff member startDate: '2024-05-12T16:21:23.842675' name: Leonid Neymark url: https://www.usgs.gov/staff-profiles/leonid-neymark
