Results 1 to 10 of about 394,950 (321)

A high throughput Rb-Sr dating method using solution tandem ICP-MS/MS (87Sr/86Sr) and standard addition calibration ICP-MS (Rb/Sr) [PDF]

MethodsX, 2021
Routine generation of large Rb-Sr age datasets has been limited by the time-consuming requirement of chromatographic isolation of Sr from Rb to avoid the isobaric interference of 87Rb+ on 87Sr+. Recently, direct measurement of interference-free 87Sr/86Sr
Christiaan T. Laureijs, Laurence A. Coogan, Jody Spence   +2 more
doaj   +2 more sources

On the age of pyrochlore carbonatites from the Ilmeno-Vishnevogorsky Alkaline Complex, the Southern Urals (insights from Rb-Sr and Sm-Nd isotopic data)

Литосфера, 2020
Research subject. In this research, we carried out Sm-Nd- и Rb-Sr-dating of pyrochlore carbonatite from the Vishnevogorsky niobium deposit, Ilmeno-Vishnevogorsky Alkaline Complex, Southern Urals.
I. L. Nedosekova, V. A. Koroteev, T. B. Bayanova, P. A. Serov, V. I. Popova, M. V. Chervyakovskaya   +5 more
doaj   +3 more sources

AGE AND GEODYNAMIC SETTINGS OF MIASKITE-PEGMATITES, CARBONATITES, AND Nb-Zr MINERALIZATION OF THE ILMENO-VISHNEVOGORSKY ALKALINE COMPLEX, SOUTH URAL (U-Pb AND Rb-Sr ISOTOPE DATA)

Геодинамика и тектонофизика, 2022
The Ilmeno-Vishnevogorsky miaskite-phenite-carbonatite complex (IVС), located in the Urals folded region, is a representative of "linear type" carbonatite complexes, with which Nb-Zr deposits are associated.
I. L. Nedosekova, V. S. Chervyakovsky, M. V. Chervyakovskaya, V. A. Bulatov   +3 more
doaj   +3 more sources

On the viability of detrital biotite Rb–Sr geochronology [PDF]

Geochronology
Abstract. Re-examination of International Ocean Discovery Program (IODP) sediment samples collected from the Bay of Bengal via laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) Rb–Sr geochronology demonstrates the viability of the biotite Rb–Sr system for use as a detrital chronometer. The age population defined by the Rb–Sr dates
Kyle P. Larson, Brendan Dyck, Sudip Shrestha, Mark Button, Yani Najman   +4 more
openaire   +2 more sources

Efficient removal of Sr²⁺, V⁵⁺, and Rb⁺ ions from groundwater using a hybrid Mg-MCM-41/Talc composite; Siwa Oasis in Egypt as case study [PDF]

Scientific Reports
This study presents the development and application of a hybrid inorganic adsorbent composed of mesoporous Mg-MCM-41 integrated with exfoliated talc nanosheets (MCM/talc composite)—for the efficient removal of Sr²⁺, V⁵⁺, and Rb⁺ ions from contaminated ...
Hussein A. ELsayed, Mohamed Hamdy Eid, Umer Farooq, Ahmad Al-Qawasmeh, Abdehamid Albiad, Fahad Abdulaziz, Ahmed Mehaney, Péter Szűcs, Mostafa R. Abukhadra   +8 more
doaj   +2 more sources

Ab initio study of the reactivity of ultracold RbSr + RbSr collisions

New Journal of Physics, 2022
We performed ab initio calculations in order to assess the reactivity of ultracold RbSr $({}^{2}{\Sigma}^{+})$ + RbSr $({}^{2}{\Sigma}^{+})$ collisions occurring on the singlet as well as the triplet potential.
Marijn P Man, Tijs Karman, Gerrit C Groenenboom   +2 more
doaj   +1 more source

Mass fractionation of Rb and Sr isotopes during laser ablation-multicollector-ICPMS: in situ observation and correction

Journal of Analytical Science and Technology, 2021
Background One of the most critical issues concerning in situ mass spectrometry lies in accounting for elements and molecules that overlap target isotopes of analytical interest in a sample. This study traced the instrumental mass fractionation of Rb and
Sung-Gyun Yim, Min-Ji Jung, Youn-Joong Jeong, Yeongmin Kim, Albert Chang-sik Cheong   +4 more
doaj   +1 more source

Elemental and K-Ar Isotopic Signatures of Glauconite/Celadonite Pellets from a Metallic Deposit of Missouri: Genetic Implications for the Local Deposits

Geosciences, 2022
In the course of attempting to date the host rocks of Viburnum metal deposits from the US state of Missouri, the purpose was here a detailed examination and contribution of the constitutive minerals of glauconite-rich pellets to the isotopic dating of ...
Norbert Clauer, I. Tonguç Uysal, Amélie Aubert   +2 more
doaj   +1 more source

Microscale Petrographic, Trace Element, and Isotopic Constraints on Glauconite Diagenesis in Altered Sedimentary Sequences: Implications for Glauconite Geochronology

Geochemistry, Geophysics, Geosystems, 2023
Glauconite is an authigenic clay mineral that is common in marine sedimentary successions. Dating of glauconite to determine the depositional age of sedimentary sequences has a long history but has fallen into disfavor due to the difficulty of obtaining “
M. Rafiei, S. C. Lӧhr, O. Alard, A. Baldermann, J. Farkaš, G. A. Brock   +5 more
doaj   +1 more source

Preparation of the Reference Materials for Rb-Sr and Sm-Nd Isotope Analysis

Yankuang ceshi, 2021
BACKGROUND: One Rb-Sr certified reference materials (GBW04411) and one Sm-Nd certified reference materials (GBW04419) for geological age, which are potash feldspar and basalt respectively, were produced and certified about 30 years ago.
TANG Suo-han, LI Jin, PAN Chen-xu, LIU Hui, YAN Bin   +4 more
doaj   +1 more source