Results 31 to 40 of about 110,450 (295)

Using perovskite to determine the pre-shallow level contamination magma characteristics of kimberlite [PDF]

, 2014
It remains difficult to obtain reliable geochemical signatures of uncontaminated kimberlite magma from bulk rock studies due to the combined effects of crustal assimilation and element mobility during post-emplacement alteration processes.
Hawkesworth, Chris J., Sarkar, Chiranjeeb, Storey, Craig   +2 more
core   +2 more sources

Research Progress on the Application of Strontium Isotope Analysis Techniques in Geology: A Review

Yankuang ceshi
Strontium (Sr) isotopes have unique geochemical properties, such as time dependence and environmental sensitivity. With the development of testing technology and theoretical systems, using Sr isotopes has become a key technique in geoscience research ...
Wuhui JIA, Kai LIU, Chenghua YU, Wei ZHU, Yuefei DENG   +4 more
doaj   +1 more source

Sr-isotope analysis of speleothems by LA-MC-ICP-MS: High temporal resolution and fast data acquisition [PDF]

, 2017
Speleothems are well established climate archives. A wide array of geochemical proxies, including stable isotopes and trace elements are present within speleothems to reconstruct past climate variability.
Breitenbach, Sebastian, Jochum, Klaus Peter, Oster, Jessica, Scholz, Denis, Wassenburg, Jasper A., Weber, Michael   +5 more
core   +3 more sources

Sr-Nd-Pb isotope systematics of fine sediments from the modern rivers in SW Japan: Implications for sediment provenance of the Northwest Pacific

Journal of Asian Earth Sciences: X, 2020
As reference data for comprehensive provenance analyses of deep-sea sediments in the Northwest Pacific region, we present Sr-Nd-Pb isotopic compositions of fine sediments sampled from 48 rivers in southwest Japan.
Yu Saitoh, Masaharu Tanimizu, Tsuyoshi Ishikawa   +2 more
doaj   +1 more source

Comparison and Optimization of Sr Isotope Analysis in Carbonate Rocks by Multiple-step Leaching Method

Yankuang ceshi, 2023
BACKGROUNDMarine sedimentary carbonate rock is an important carrier for recording seawater information. The Sr isotope composition (87Sr/86Sr) of carbonate rocks can reflect the relative contribution of the continental crust and mantle to the Sr isotope ...
Xu PAN, Ziwei SUN, Jiwei GAO, Hongmei GONG, Xiaohong WANG, Meng DUAN, Yuanyuan XIAO   +6 more
doaj   +1 more source

Уран-свинцевий ізотопний вік гранітів Вознесенського масиву (Інгульський мегаблок Українського щита) [PDF]

, 2016
Уран-свинцевим ізотопним методом датовано монацити із гранітів Вознесенського масиву. Вік монациту, а отже і гранітів, становить 2034,6 ± 6,6 млн років.
Бондаренко, С.М., Довбуш, Т.І., Донський, М.О., Курило, С.І., Степанюк, Л.М., Сьомка, В.О.   +5 more
core   +2 more sources

Determination of strontium isotope ratios in plant samples by wet ashing digestion

Results in Earth Sciences
Strontium isotope provenance analysis has been widely applied across multiple disciplines, including archaeology, food science, and forensics. The establishment of bioavailable ⁸⁷Sr/⁸⁶Sr maps, known as isoscapes, which rely on a substantial number of ...
Wenyan Cheng, Youlian Li, Yili Jin, Zihua Tang   +3 more
doaj   +1 more source

Conservation of 87Sr/86Sr During Wine-Making of White Wines: A Geochemical Fingerprint of Geographical Provenance and Quality Production

Frontiers in Environmental Science, 2020
The measuring of 87Sr/86Sr in wine, grape, and bioavailable soil fraction samples with the same uncertainty of geological materials allows fully comparing the whole wine-production chain with the peculiar geochemical isotope signature of any geographic ...
Ines Tescione, Ines Tescione, Martina Casalini, Sara Marchionni, Eleonora Braschi, Massimo Mattei, Sandro Conticelli, Sandro Conticelli   +7 more
doaj   +1 more source

The IRHUM (Isotopic Reconstruction of Human Migration) database – bioavailable strontium isotope ratios for geochemical fingerprinting in France [PDF]

Earth System Science Data, 2014
Strontium isotope ratios (87Sr / 86Sr) are a key geochemical tracer used in a wide range of fields including archaeology, ecology, food and forensic sciences.
M. Willmes, L. McMorrow, L. Kinsley, R. Armstrong, M. Aubert, S. Eggins, C. Falguères, B. Maureille, I. Moffat, R. Grün   +9 more
doaj   +1 more source

Accurate spectroscopy of Sr atoms

, 2005
We report the frequency measurement with an accuracy in the 100 kHz range of several optical transitions of atomic Sr : $^1S_0- ^3P_1$ at 689 nm, $^3P_1- ^3S_1$ at 688 nm and $^3P_0- ^3S_1$ at 679 nm.
28, 31, 69, 69, 76, 79, 8, 82, 82, 82, 82, 91, 91, 92, 92, 92, A. Brusch, A. Quessada-Vial, Alzetta, Bauch, Bauschlicher, Berkeland, Buchinger, Celikov, Clairon, Cundiff, D. Kolker, G. D. Rovera, Gupta, Hall, I. Courtillot, Ishikawa, Katori, P. Lemonde, Porsev, Putlitz, Rubbmark, Takamoto, Udem, Uzan   +39 more
core   +3 more sources