Results 51 to 60 of about 19,693 (231)

A normalised seawater strontium isotope curve: possible implications for Neoproterozoic-Cambrian weathering rates and the further oxygenation of the Earth [PDF]

, 2007
The strontium isotope composition of seawater is strongly influenced on geological time scales by changes in the rates of continental weathering relative to ocean crust alteration.
Shields, GA
core   +1 more source

Early Neoproterozoic limestones from the Gwna Group, Anglesey [PDF]

, 1998
Limestone megaclasts up to hundreds of metres in size are present within the Gwna Group mélange, North Wales, UK. The mélange has been interpreted as part of a Peri-Gondwanan fore-arc accretionary complex although the age of deposition remains ...
JANA M. HORÁK, JANE A. EVANS, O'Brian, Blatt, Matthew, Shackleton, Dickin, Gibbons, Denison, McCausland, Montañez, Schuster, Shackleton, Shields, Walter, White, Wood   +16 more
core   +4 more sources

Identification of multiple natural and anthropogenic sources of dust in snow from Zhongshan Station to Dome A, East Antarctica

Journal of Glaciology, 2018
The stable oxygen isotope composition, major ions and isotopic compositions of strontium (Sr), neodymium (Nd) and lead (Pb) in insoluble dust from recent surface snow samples along the transect from the Zhongshan and Progress stations (located on the ...
ZHIHENG DU, CUNDE XIAO, MINGHU DING, CHUANJIN LI   +3 more
doaj   +1 more source

Does depleted mantle form an intrinsic part of the Iceland plume? [PDF]

, 2003
Icelandic basalt ranges in composition from voluminous tholeiite, erupted in the rift zones, to small-volume, mildly alkaline basalt erupted off-axis.
Andrew D. Saunders, Björn S. Hardarson, Blichert-Toft, Breddam, Chauvel, Chauvel, Einarsson, Elliott, Fitton, Fitton, Furman, Gee, Hanan, Hanan, Hardarson, Hards, Hofmann, Hémond, J. Godfrey Fitton, Jakobsson, Johnson, Johnson, Kempton, Kempton, Kempton, Kerr, McDonough, Nowell, Pamela D. Kempton, Prestvik, Pálmason, Saunders, Schilling, Schilling, Skovgaard, Slater, Thirlwall, Zindler   +37 more
core   +1 more source

Sensitivity of a tonne-scale NEXT detector for neutrinoless double beta decay searches

, 2021
The Neutrino Experiment with a Xenon TPC (NEXT) searches for the neutrinoless double-beta decay of Xe-136 using high-pressure xenon gas TPCs with electroluminescent amplification.
Adams, C., Arazi, L., Arnquist, I. J., Azevedo, C. D. R, Bailey, K., Ballester, F., Benlloch-Rodríguez, J. M., Borges, F. I. G. M., Byrnes, N., Carrión, J. V., Cebrián, S., Church, E., Conde, C. A. N., Contreras, T., Cárcel, S., Denisenko, A. A., Díaz, G., Díaz, J., Escada, J., Esteve, R., Felkai, R., Fernandes, L. M. P., Ferrario, P., Ferreira, A. L., Foss, F., Freitas, E. D. C., Freixa, Z., García, Y. Rodríguez, Generowicz, J., Goldschmidt, A., González, R., González-Díaz, D., Gosh, S., Guenette, R., Gutiérrez, R. M., Gómez-Cadenas, J. J., Haefner, J., Hafidi, K., Hauptman, J., Henriques, C. A. O., Herrero, P., Herrero, V., Ho, J., Ifergan, Y., Jones, B. J. P., Kekic, M., Labarga, L., Laing, A., Lebrun, P., Losada, M., López-March, N., Mano, R. D. P., Martín-Albo, J., Martínez, A., Martínez-Lema, G., Martínez-Vara, M., McDonald, A. D., Meziani, Z. E., Monrabal, F., Monteiro, C. M. B., Mora, F. J., Morata, J. A. Hernando, Newhouse, C., NEXT Collaboration, Novella, P., Nygren, D. R., Oblak, E., Palmeiro, B., Para, A., Pérez, J., Querol, M., Redwine, A., Renner, J., Ripoll, L., Rivilla, I., Rodríguez, J., Rogero, C., Rogers, L., Romeo, B., Romo-Luque, C., Santos, F. P., Santos, J. M. F. dos, Simón, A., Sorel, M., Stanford, C., Teixeira, J. M. R., Thapa, P., Toledo, J. F., Torrent, J., Usón, A., Veloso, J. F. C. A., Vidal, J. Muñoz, Vuong, T. T., Webb, R., Weiss-Babai, R., White, J. T., Woodruff, K., Yahlali, N., Álvarez, V.   +98 more
core   +1 more source

Petrogenesis of Granitoids, U-Pb zircon geochronology, Sr-Nd Petrogenesis of granitoids, U-Pb zircon geochronology, Sr-Nd isotopic characteristics, and important occurrence of Tertiary mineralization within the Lut block, eastern Iran

Journal of Economic Geology, 2012
Tertiary intrusive granitoids within the Lut block in the Khorasan Razavi and South Khorasan provinces are mainly sub-volcanic with porphyry texture and their composition varies from granite to diorite but monzonite is dominant.
Mohammad Hassan Karimpour, Ferdowsi University of Mashhad , G. Lang Farmer, Colorado   +3 more
doaj   +3 more sources

Late Quaternary Mediterranean Outflow Water: implications from radiogenic Nd, Sr, Pb isotopes and clay minerals [PDF]

, 2010
Mediterranean Outflow Water (MOW) is characterised by higher temperatures and salinities than other ambient water masses. MOW spreads at water depths between 500 and 1500 m into the eastern North Atlantic and has been a source of salinity for the ...
Frank, Martin, Haley, Brian A., Stumpf, Roland   +2 more
core  

Proposal for International Agreement on Ca Notation resulting from discussion at workshops on stable isotope measurement held in Davos (Goldschmidt 2002) and Nice (EGS-AGU-EUG 2003) [PDF]

, 2004
A proposal is made to standardise the reporting of Ca isotope data to the δ44Ca/40Ca notation (or δ44Ca/42Ca) and to adopt NIST SRM 915a as the reference ...
Bock, Barbara, Eisenhauer, Anton, Fietzke, Jan, Gussone, Nikolaus, Hippler, Dorothee, Kramers, Jan, Nägler, Thomas F., Schmitt, Anne-Désirée, Stille, Peter   +8 more
core   +1 more source

Peixe Zircon as a Quality Control Reference Material in U‐Pb Geochronology by LA‐ICP‐MS

Geostandards and Geoanalytical Research, Volume 50, Issue 2, Page 369-389, June 2026.
Key Points Peixe#0 zircon was characterised for U‐Pb geochronology using CA‐ID‐TIMS, SIMS and a long‐term LA‐ICP‐MS data set. The consistent results establish Peixe#0 as a reference material for U‐Pb quality control. Trace element heterogeneity requires careful, CL‐guided spot selection.
Margareth Sugano Navarro, Erica Martini Tonetto, Elson P. Oliveira, Mauricio Ibañez‐Mejia, Cristina Talavera, Neal J. McNaughton, Jacinta Enzweiler, Michael Wiedenbeck   +7 more
wiley   +1 more source

Monogenetic Near‐Island Seamounts in the Galápagos Archipelago

Geochemistry, Geophysics, Geosystems, 2020
Rarely have small seamounts on the flanks of hotspot derived ocean‐island volcanoes been the targets of sampling, due to sparse high‐resolution mapping near ocean islands.
D. M. Schwartz, V. D. Wanless, S. A. Soule, M. D. Schmitz, M. D. Kurz   +4 more
doaj   +1 more source