Results 71 to 80 of about 3,800 (187)

Editorial: “Metal Isotope Analytical Chemistry for Geological and Environmental Sample”

open access: yesFrontiers in Chemistry, 2021
Chaofeng Li   +3 more
doaj   +1 more source

Cassiterite U-Pb Dating with LA-MC-ICP-MS of the Laozhailing Cu-Sn Deposit, Yongzhou City, Hunan Province

open access: yesYankuang ceshi
Cassiterite is an important ore mineral in tin polymetallic deposits. Using cassiterite for dating tin polymetallic deposits has become one of the most direct methods to obtain the mineralization age of the deposits.
Yurong CUI   +7 more
doaj   +1 more source

Geology, petrography and U-Pb age of a NW-SE longitudinal dyke swarm from the Eastern Northpatagonian Massif, Río Negro [PDF]

open access: yes, 2014
En esta contribución se revisan las relaciones estratigráficas y la petrografía de un enjambre de diques longitudinales de rumbo NO-SE, en un amplio sector del Macizo Nordpatagónico oriental (Río Negro).
Gonzalez, Pablo Diego   +6 more
core   +1 more source

Petrogenesis Research of Basic Rock in the Hongliugou Area of the Altun Orogen Based on Baddeleyite Chronology and Whole-Rock Geochemical Analyses

open access: yesYankuang ceshi
Previous studies suggest that the Alton Block may have participated in the breakup of the Rodinia supercontinent, however, there have been no prior reports of intraplate basic-ultrabasic rock bodies in the region.
Yanguang LI   +3 more
doaj   +1 more source

Characterization of nuclear fuels by ICP mass-spectrometric techniques [PDF]

open access: yes, 2018
Isotopic analyses of radioactive materials such as irradiated nuclear fuel are of major importance for the optimization of the nuclear fuel cycle and for safeguard aspects.
Günther-Leopold, Ines   +3 more
core  

234U/238U Disequilibrium along stylolitic discontinuities in deep Mesozoic limestone formations of the Eastern Paris basin: evidence for discrete uranium mobility over the last 1–2 million years [PDF]

open access: yesHydrology and Earth System Sciences, 2004
The (234U/238) equilibrium state of borehole core samples from the deep, low-permeability limestone formations surrounding the target argilite layer of the Meuse/Haute-Marne experimental site of the French agency for nuclear waste management -ANDRA-
P. Deschamps   +12 more
doaj  

Improving the utility of LA-ICP-MS for isotope ratio analyses of single particles with application to uranium oxide [PDF]

open access: yes, 2016
The determination of the isotopic composition of single uranium oxide particles, size 0.3-2 μm, for nuclear safeguards is current performed by either thermal ionisation mass spectrometry (TIMS) or Secondary Ion Mass Spectrometry (SIMS).
Grant Craig (5743340)
core  

Closed-system behaviour of the Re-Os isotope system recorded in primary and secondary platinum-group mineral assemblages : evidence from a mantle chromitite at Harold's Grave (Shetland ophiolite complex, Scotland) [PDF]

open access: yes, 2015
This study evaluates in detail the mineral chemistry, wholerock and mineral separate Os-isotope compositions of distinct platinumgroup mineral (PGM) assemblages in an isolated chromitite pod at Harold's Grave which occurs in mantle tectonite in the ...
Badanina, Inna Yu.   +4 more
core   +1 more source

Bunker Cave stalagmites: an archive for central European Holocene climate variability [PDF]

open access: yes, 2012
Holocene climate was characterised by variability on multi-centennial to multi-decadal time scales. In central Europe, these fluctuations were most pronounced during winter. Here we present a record of past winter climate variability for the last 10.8 ka
Fohlmeister, Jens   +11 more
core   +2 more sources

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