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  • 2015-2019  (5,900)
  • 1945-1949  (3)
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Year
  • 1
    Publication Date: 2019
    Description: 〈span〉〈div〉Abstract〈/div〉A few, thin, Mississippian siliciclastic limestone beds, interbedded with ammonoid (uppermost 〈span〉Eumorphoceras〈/span〉 Zone)-bearing shales within the South Syncline Ridge section on the Nuclear Test Site in southern Nevada, contain an abundant, low-diversity assemblage of late Serpukhovian/late Chesterian calcareous foraminifers dominated by the archaediscaceans 〈span〉Neoarchaediscus altiluminis〈/span〉, 〈span〉Brenckleina rugosa〈/span〉, 〈span〉Eosigmoilina robertsoni〈/span〉, and 〈span〉Betpakodiscus〈/span〉 of the group 〈span〉B〈/span〉. 〈span〉attenuatus〈/span〉. These limestone beds were deposited in a shallow-water, clastic facies of the Scotty Wash Formation and, based on common conodont occurrences, correlate southeast to the Bird Spring Formation below the Mississippian-Pennsylvanian GSSP at Arrow Canyon, Nevada. The South Syncline Ridge foraminifers are comparable to those found in coeval beds at Arrow Canyon and represent the only other known foraminiferal assemblage to exist in association with uppermost 〈span〉Eumorphoceras〈/span〉 Zone ammonoids in North America outside of Arkansas in the southern Midcontinent. Reconciliation of regional conodont and ammonoid zonations shows that the range of eosigmoiline foraminifers (〈span〉E〈/span〉. 〈span〉robertsoni〈/span〉 and 〈span〉B〈/span〉. 〈span〉rugosa〈/span〉), now generally considered an upper Serpukhovian index, extends from a position either just below or at the lower-upper boundary of the Serpukhovian Stage into the lower part of the Bashkirian Stage in North America; their upper range falls within the lower part of the 〈span〉Homoceras〈/span〉 ammonoid zone beginning in the upper part of the Serpukhovian Stage. Discussion of the foraminiferal taxa includes support for retaining the genus 〈span〉Betpakodiscus〈/span〉 rather than synonymizing it under 〈span〉Tubispirodiscus〈/span〉, as proposed by some specialists during the past few years.〈/span〉
    Print ISSN: 0096-1191
    Electronic ISSN: 1943-264X
    Topics: Geosciences
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  • 2
    Publication Date: 2019
    Description: 〈span〉〈div〉Abstract〈/div〉Pyrite (FeS〈sub〉2〈/sub〉) is a typical container of Pt in ores of magmatic and hydrothermal origin and in some carbonrich ores of sedimentary-diagenetic origin. Knowledge of the state of Pt disseminated in the matrix of pyrite, including local atomic environment (type of atoms in the nearest and distant coordination shells, coordination numbers, interatomic distances) and oxidation state, is necessary for physical-chemical modeling of platinum group element mineralization and for the improvement of Pt ore extraction and processing technologies. Here we report results of an investigation of local atomic structure of synthetic Pt-bearing pyrites by means of X-ray absorption spectroscopy (XAS). Synthesis experiments, performed at 580° and 590°C in a Pt-saturated system by means of salt-flux method, yielded crystals of pyrite with concentrations of Pt up to 4 wt %. Scanning electron microscopy (SEM) and electron probe microanalysis (EPMA) showed that the distribution of Pt within the pyrite grains is of zonal character, but within the distinct zones Pt is distributed homogeneously. Negative correlation between the concentrations of Pt and Fe was observed in the synthesized pyrite grains. The slope of the correlation line corresponds to the formation of the solid solution in the Pt-Fe-S system and/or to the formation of PtS〈sub〉2〈/sub〉. The XAS experiments revealed the existence of two forms of Pt in pyrite. The main form is the solid solution Pt(IV), which isomorphically substitutes for Fe. The Pt-S distance in pyrite is ~0.1 Å longer than that of Fe-S in pure pyrite. The distortion of the pyrite crystal structure disappears at 〈span〉R〈/span〉 〉2.5 Å. The second Pt-rich form was identified by means of high-resolution transmission electron microscopy (HRTEM) as nanosized inclusions of PtS〈sub〉2〈/sub〉. Heating experiments with in situ registration of X-ray absorption spectra resulted in partial decomposition (dissolution) of PtS〈sub〉2〈/sub〉 nanosized inclusions with the formation of the solid solution (Fe〈sub〉1–x〈/sub〉Pt〈sub〉x〈/sub〉)S〈sub〉2〈/sub〉. Therefore, the PtS〈sub〉2〈/sub〉 nanosized particles can be considered as a quench product. Our data demonstrate that both Pt solid solution and PtS〈sub〉2〈/sub〉 nanosized inclusions (at high Pt content) can exist in natural Pt-bearing pyrites.〈/span〉
    Print ISSN: 0361-0128
    Electronic ISSN: 1554-0774
    Topics: Geosciences
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  • 3
    facet.materialart.
    Unknown
    PANGAEA
    In:  Oceanography Center, University of Cyprus, Nicosia
    Publication Date: 2023-01-13
    Description: The aim of CNCY201614913 mission presented here (part of the CRELEV-2016 experiment) was to focus on the transport and convection processes occurring in the area of the Eastern Mediterranean Sea. These processes are important for the nutrients injection in the surface waters, the consequent phytoplankton growth and fisheries. The main objective of the CRELEV-2016 cruise was to examine a comprehensive set of parameters in the Eastern Mediterranean Sea in order to quantify variability and trends of physical and biogeochemical properties. These data will be used to better understand the role of natural and anthropogenic pressures. The data were collected with glider SG-149, after being launched from Paphos on 23 March, 2016, and recovered by the R/V Aegaeo near Crete on 6 June 2016. Parameters measured include pressure, temperature, conductivity, dissolved oxygen, optical backscatter at 470 nm, 700 nm, and optical fluorescence at 695 nm at depths up to 1000 m.
    Keywords: Calculated from pressure; CNCY201614913; CNCY201614913_001; CNCY201614913_002; CNCY201614913_003; CNCY201614913_004; CNCY201614913_005; CNCY201614913_006; CNCY201614913_007; CNCY201614913_008; CNCY201614913_009; CNCY201614913_010; CNCY201614913_011; CNCY201614913_012; CNCY201614913_013; CNCY201614913_014; CNCY201614913_015; CNCY201614913_016; CNCY201614913_017; CNCY201614913_018; CNCY201614913_019; CNCY201614913_020; CNCY201614913_021; CNCY201614913_022; CNCY201614913_023; CNCY201614913_024; CNCY201614913_025; CNCY201614913_026; CNCY201614913_027; CNCY201614913_028; CNCY201614913_029; CNCY201614913_030; CNCY201614913_031; CNCY201614913_032; CNCY201614913_033; CNCY201614913_034; CNCY201614913_035; CNCY201614913_036; CNCY201614913_037; CNCY201614913_038; CNCY201614913_039; CNCY201614913_040; CNCY201614913_041; CNCY201614913_042; CNCY201614913_043; CNCY201614913_044; CNCY201614913_045; CNCY201614913_046; CNCY201614913_047; CNCY201614913_048; CNCY201614913_049; CNCY201614913_050; CNCY201614913_051; CNCY201614913_052; CNCY201614913_053; CNCY201614913_054; CNCY201614913_055; CNCY201614913_056; CNCY201614913_057; CNCY201614913_058; CNCY201614913_059; CNCY201614913_060; CNCY201614913_061; CNCY201614913_062; CNCY201614913_063; CNCY201614913_064; CNCY201614913_065; CNCY201614913_066; CNCY201614913_067; CNCY201614913_068; CNCY201614913_069; CNCY201614913_070; CNCY201614913_071; CNCY201614913_072; CNCY201614913_073; CNCY201614913_074; CNCY201614913_075; CNCY201614913_076; CNCY201614913_077; CNCY201614913_078; CNCY201614913_079; CNCY201614913_080; CNCY201614913_081; CNCY201614913_082; CNCY201614913_083; CNCY201614913_084; CNCY201614913_085; CNCY201614913_086; CNCY201614913_087; CNCY201614913_088; CNCY201614913_089; CNCY201614913_090; CNCY201614913_091; CNCY201614913_092; CNCY201614913_093; CNCY201614913_094; CNCY201614913_095; CNCY201614913_096; CNCY201614913_097; CNCY201614913_098; CNCY201614913_099; CNCY201614913_100; CNCY201614913_101; CNCY201614913_102; CNCY201614913_103; CNCY201614913_104; CNCY201614913_105; CNCY201614913_106; CNCY201614913_107; CNCY201614913_108; CNCY201614913_109; CNCY201614913_110; CNCY201614913_111; CNCY201614913_112; CNCY201614913_113; CNCY201614913_114; CNCY201614913_115; CNCY201614913_116; CNCY201614913_120; CNCY201614913_121; CNCY201614913_122; CNCY201614913_123; CNCY201614913_124; CNCY201614913_125; CNCY201614913_126; CNCY201614913_127; CNCY201614913_128; CNCY201614913_129; CNCY201614913_130; CNCY201614913_131; CNCY201614913_132; CNCY201614913_133; CNCY201614913_134; CNCY201614913_135; CNCY201614913_136; CNCY201614913_137; CNCY201614913_138; CNCY201614913_139; CNCY201614913_140; CNCY201614913_141; CNCY201614913_142; CNCY201614913_143; CNCY201614913_144; CNCY201614913_145; CNCY201614913_146; CNCY201614913_147; CNCY201614913_148; CNCY201614913_149; CNCY201614913_150; CNCY201614913_151; CNCY201614913_152; CNCY201614913_153; CNCY201614913_154; CNCY201614913_155; CNCY201614913_156; CNCY201614913_157; CNCY201614913_158; CNCY201614913_159; CNCY201614913_160; CNCY201614913_161; CNCY201614913_162; CNCY201614913_163; CNCY201614913_164; CNCY201614913_165; CNCY201614913_166; CNCY201614913_167; CNCY201614913_168; CNCY201614913_169; CNCY201614913_170; CNCY201614913_171; CNCY201614913_172; CNCY201614913_173; CNCY201614913_174; CNCY201614913_175; CNCY201614913_176; CNCY201614913_177; CNCY201614913_178; CNCY201614913_179; CNCY201614913_180; CNCY201614913_181; CNCY201614913_182; CNCY201614913_183; CNCY201614913_184; CNCY201614913_185; CNCY201614913_186; CNCY201614913_187; CNCY201614913_188; CNCY201614913_189; CNCY201614913_190; CNCY201614913_191; CNCY201614913_192; CNCY201614913_193; CNCY201614913_194; CNCY201614913_195; CNCY201614913_196; CNCY201614913_197; CNCY201614913_198; CNCY201614913_199; CNCY201614913_200; CNCY201614913_201; CNCY201614913_202; CNCY201614913_203; CNCY201614913_204; CNCY201614913_205; CNCY201614913_206; CNCY201614913_207; CNCY201614913_208; CNCY201614913_209; CNCY201614913_210; CNCY201614913_211; CNCY201614913_212; CNCY201614913_213; CNCY201614913_214; CNCY201614913_215; CNCY201614913_216; CNCY201614913_217; CNCY201614913_218; CNCY201614913_219; CNCY201614913_220; CNCY201614913_221; CNCY201614913_222; CNCY201614913_223; CNCY201614913_224; CNCY201614913_225; CNCY201614913_226; CNCY201614913_227; CNCY201614913_228; CNCY201614913_229; CNCY201614913_230; CNCY201614913_231; CNCY201614913_232; CNCY201614913_233; CNCY201614913_234; CNCY201614913_235; CNCY201614913_236; CNCY201614913_237; CNCY201614913_238; CNCY201614913_239; CNCY201614913_240; CNCY201614913_241; CNCY201614913_242; CNCY201614913_243; CNCY201614913_244; CNCY201614913_245; CNCY201614913_246; CNCY201614913_247; CNCY201614913_248; CNCY201614913_249; CNCY201614913_250; CNCY201614913_251; CNCY201614913_252; CNCY201614913_253; CNCY201614913_254; CNCY201614913_255; CNCY201614913_256; CNCY201614913_257; CNCY201614913_258; CNCY201614913_259; CNCY201614913_260; CNCY201614913_261; CNCY201614913_262; CNCY201614913_263; CNCY201614913_264; CNCY201614913_265; CNCY201614913_266; CNCY201614913_267; CNCY201614913_268; CNCY201614913_269; CNCY201614913_270; CNCY201614913_271; CNCY201614913_272; CNCY201614913_273; CNCY201614913_274; CNCY201614913_275; CNCY201614913_276; CNCY201614913_277; CNCY201614913_278; CNCY201614913_279; CNCY201614913_280; CNCY201614913_281; CNCY201614913_282; CNCY201614913_283; CNCY201614913_284; CNCY201614913_285; Date/Time of event; DEPTH, water; Event label; GLD; Glider; Latitude of event; Longitude of event; Mediterranean Sea, Eastern Basin; Oxygen; Pressure, water; Salinity; Seaglider, SG-149; SG149_Mission_13; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 391876 data points
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  • 4
    facet.materialart.
    Unknown
    PANGAEA
    In:  Oceanography Center, University of Cyprus, Nicosia
    Publication Date: 2023-02-18
    Keywords: CNCY201614913; CNCY201614913_001; CNCY201614913_002; CNCY201614913_003; CNCY201614913_004; CNCY201614913_005; CNCY201614913_006; CNCY201614913_007; CNCY201614913_008; CNCY201614913_009; CNCY201614913_010; CNCY201614913_011; CNCY201614913_012; CNCY201614913_013; CNCY201614913_014; CNCY201614913_015; CNCY201614913_016; CNCY201614913_017; CNCY201614913_018; CNCY201614913_019; CNCY201614913_020; CNCY201614913_021; CNCY201614913_022; CNCY201614913_023; CNCY201614913_024; CNCY201614913_025; CNCY201614913_026; CNCY201614913_027; CNCY201614913_028; CNCY201614913_029; CNCY201614913_030; CNCY201614913_031; CNCY201614913_032; CNCY201614913_033; CNCY201614913_034; CNCY201614913_035; CNCY201614913_036; CNCY201614913_037; CNCY201614913_038; CNCY201614913_039; CNCY201614913_040; CNCY201614913_041; CNCY201614913_042; CNCY201614913_043; CNCY201614913_044; CNCY201614913_045; CNCY201614913_046; CNCY201614913_047; CNCY201614913_048; CNCY201614913_049; CNCY201614913_050; CNCY201614913_051; CNCY201614913_052; CNCY201614913_053; CNCY201614913_054; CNCY201614913_055; CNCY201614913_056; CNCY201614913_057; CNCY201614913_058; CNCY201614913_059; CNCY201614913_060; CNCY201614913_061; CNCY201614913_062; CNCY201614913_063; CNCY201614913_064; CNCY201614913_065; CNCY201614913_066; CNCY201614913_067; CNCY201614913_068; CNCY201614913_069; CNCY201614913_070; CNCY201614913_071; CNCY201614913_072; CNCY201614913_073; CNCY201614913_074; CNCY201614913_075; CNCY201614913_076; CNCY201614913_077; CNCY201614913_078; CNCY201614913_079; CNCY201614913_080; CNCY201614913_081; CNCY201614913_082; CNCY201614913_083; CNCY201614913_084; CNCY201614913_085; CNCY201614913_086; CNCY201614913_087; CNCY201614913_088; CNCY201614913_089; CNCY201614913_090; CNCY201614913_091; CNCY201614913_092; CNCY201614913_093; CNCY201614913_094; CNCY201614913_095; CNCY201614913_096; CNCY201614913_097; CNCY201614913_098; CNCY201614913_099; CNCY201614913_100; CNCY201614913_101; CNCY201614913_102; CNCY201614913_103; CNCY201614913_104; CNCY201614913_105; CNCY201614913_106; CNCY201614913_107; CNCY201614913_108; CNCY201614913_109; CNCY201614913_110; CNCY201614913_111; CNCY201614913_112; CNCY201614913_113; CNCY201614913_114; CNCY201614913_115; CNCY201614913_116; CNCY201614913_117; CNCY201614913_118; CNCY201614913_119; CNCY201614913_120; CNCY201614913_121; CNCY201614913_122; CNCY201614913_123; CNCY201614913_124; CNCY201614913_125; CNCY201614913_126; CNCY201614913_127; CNCY201614913_128; CNCY201614913_129; CNCY201614913_130; CNCY201614913_131; CNCY201614913_132; CNCY201614913_133; CNCY201614913_134; CNCY201614913_135; CNCY201614913_136; CNCY201614913_137; CNCY201614913_138; CNCY201614913_139; CNCY201614913_140; CNCY201614913_141; CNCY201614913_142; CNCY201614913_143; CNCY201614913_144; CNCY201614913_145; CNCY201614913_146; CNCY201614913_147; CNCY201614913_148; CNCY201614913_149; CNCY201614913_150; CNCY201614913_151; CNCY201614913_152; CNCY201614913_153; CNCY201614913_154; CNCY201614913_155; CNCY201614913_156; CNCY201614913_157; CNCY201614913_158; CNCY201614913_159; CNCY201614913_160; CNCY201614913_161; CNCY201614913_162; CNCY201614913_163; CNCY201614913_164; CNCY201614913_165; CNCY201614913_166; CNCY201614913_167; CNCY201614913_168; CNCY201614913_169; CNCY201614913_170; CNCY201614913_171; CNCY201614913_172; CNCY201614913_173; CNCY201614913_174; CNCY201614913_175; CNCY201614913_176; CNCY201614913_177; CNCY201614913_178; CNCY201614913_179; CNCY201614913_180; CNCY201614913_181; CNCY201614913_182; CNCY201614913_183; CNCY201614913_184; CNCY201614913_185; CNCY201614913_186; CNCY201614913_187; CNCY201614913_188; CNCY201614913_189; CNCY201614913_190; CNCY201614913_191; CNCY201614913_192; CNCY201614913_193; CNCY201614913_194; CNCY201614913_195; CNCY201614913_196; CNCY201614913_197; CNCY201614913_198; CNCY201614913_199; CNCY201614913_200; CNCY201614913_201; CNCY201614913_202; CNCY201614913_203; CNCY201614913_204; CNCY201614913_205; CNCY201614913_206; CNCY201614913_207; CNCY201614913_208; CNCY201614913_209; CNCY201614913_210; CNCY201614913_211; CNCY201614913_212; CNCY201614913_213; CNCY201614913_214; CNCY201614913_215; CNCY201614913_216; CNCY201614913_217; CNCY201614913_218; CNCY201614913_219; CNCY201614913_220; CNCY201614913_221; CNCY201614913_222; CNCY201614913_223; CNCY201614913_224; CNCY201614913_225; CNCY201614913_226; CNCY201614913_227; CNCY201614913_228; CNCY201614913_229; CNCY201614913_230; CNCY201614913_231; CNCY201614913_232; CNCY201614913_233; CNCY201614913_234; CNCY201614913_235; CNCY201614913_236; CNCY201614913_237; CNCY201614913_238; CNCY201614913_239; CNCY201614913_240; CNCY201614913_241; CNCY201614913_242; CNCY201614913_243; CNCY201614913_244; CNCY201614913_245; CNCY201614913_246; CNCY201614913_247; CNCY201614913_248; CNCY201614913_249; CNCY201614913_250; CNCY201614913_251; CNCY201614913_252; CNCY201614913_253; CNCY201614913_254; CNCY201614913_255; CNCY201614913_256; CNCY201614913_257; CNCY201614913_258; CNCY201614913_259; CNCY201614913_260; CNCY201614913_261; CNCY201614913_262; CNCY201614913_263; CNCY201614913_264; CNCY201614913_265; CNCY201614913_266; CNCY201614913_267; CNCY201614913_268; CNCY201614913_269; CNCY201614913_270; CNCY201614913_271; CNCY201614913_272; CNCY201614913_273; CNCY201614913_274; CNCY201614913_275; CNCY201614913_276; CNCY201614913_277; CNCY201614913_278; CNCY201614913_279; CNCY201614913_280; CNCY201614913_281; CNCY201614913_282; CNCY201614913_283; CNCY201614913_284; CNCY201614913_286; CNCY201614913_287; CNCY201614913_288; CNCY201614913_289; CNCY201614913_290; CNCY201614913_291; CNCY201614913_292; CNCY201614913_293; CNCY201614913_294; CNCY201614913_295; CNCY201614913_296; CNCY201614913_297; CNCY201614913_298; CNCY201614913_299; CNCY201614913_300; CNCY201614913_301; CNCY201614913_302; CNCY201614913_303; CNCY201614913_304; CNCY201614913_305; CNCY201614913_306; CNCY201614913_307; CNCY201614913_308; CNCY201614913_309; CNCY201614913_310; CNCY201614913_311; CNCY201614913_312; CNCY201614913_313; CNCY201614913_314; CNCY201614913_315; CNCY201614913_316; CNCY201614913_317; CNCY201614913_318; CNCY201614913_319; CNCY201614913_320; CNCY201614913_321; CNCY201614913_322; CNCY201614913_323; CNCY201614913_324; CNCY201614913_325; CNCY201614913_326; CNCY201614913_327; CNCY201614913_328; Comment; Event label; File name; File size; GLD; Glider; Latitude of event; Longitude of event; Mediterranean Sea, Eastern Basin; SG149_Mission_13; Uniform resource locator/link to file
    Type: Dataset
    Format: text/tab-separated-values, 1027 data points
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  • 5
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 68 (1946), S. 2753-2753 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Industrial & engineering chemistry 39 (1947), S. 438-439 
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 7
    Publication Date: 2019-09-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
    Format: application/pdf
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  • 8
    facet.materialart.
    Unknown
    Geophysical Institute, University of Bergen
    In:  EPIC3Bergen, Geophysical Institute, University of Bergen
    Publication Date: 2016-07-26
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
    Format: application/pdf
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  • 9
    facet.materialart.
    Unknown
    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Publication Date: 2016-11-07
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
    Format: application/zip
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  • 10
    facet.materialart.
    Unknown
    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Publication Date: 2016-11-02
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
    Format: image/png
    Format: image/png
    Format: image/png
    Format: image/png
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