Results 81 to 90 of about 5,096 (207)

Grey Hill Zircon – A Natural High 176Yb/177Hf Zircon Reference Material for LA‐MC‐ICP‐MS Hf Isotope Measurement

Geostandards and Geoanalytical Research, Volume 49, Issue 4, Page 799-819, December 2025.
Key Points New natural high REE/Hf zircon reference material for in situ Hf isotopic measurement. Hf isotope ratio is independent of zircon textural domains. Stable Hf isotope ratio despite Pb and REE variability. Accurate measurements of Hf isotope ratios in zircon rely on adequate correction for isobaric interferences, which increase in complexity as
Piero A.B. de Sampaio, Hugo K.H. Olierook, Denis Fougerouse, Bradley J. McDonald, Ninna K. Jensen, James N. Connelly, William D.A. Rickard, David W. Saxey, Noreen J. Evans, Martin Bizzarro, Nicholas J. Gardiner, Joshua M. Garber, Luc S. Doucet, Zheng‐Xiang Li   +13 more
wiley   +1 more source

Caracterização mineralógica, geoquímica e potencial econômico de ocorrências de terras raras do maciço granítico Serra do Mendes, Goiás [PDF]

, 2017
Dissertação (mestrado)—Universidade de Brasília, Instituto de Geociências, Programa de Pós-Graduação em Geologia, 2017.O Maciço Granítico Serra do Mendes (MGSM) está localizado na Província Estanífera de Goiás (PEG), que é caracterizada por corpos de ...
Zapata Montoya, Angélica María
core   +1 more source

Deep Seek to the Excited States: A Thermally‐Activated Jahn–Teller Effect Achieves Superior Sensitivity for Thermometry at Cryogenic Temperature

Advanced Optical Materials, Volume 13, Issue 32, November 14, 2025.
A Sb3+‐activated bismuth‐based halide single crystal shifts the onset temperature by ≈200 K. The confluence of the spin‐orbit interaction and the dynamic Jahn–Teller effect is responsible for maximizing the opposite emission changes at different temperatures. A high relative sensitivity (Sr) value of 18.9 % K−1 is obtained at 77 K.
Weihao Wang, Fang Zeng, Guixin Liu, Shihan Xia, Yuhui Zheng, Markus Suta, Qianming Wang   +6 more
wiley   +1 more source

An investigation to locate and correct errors in the card file prepared by the Joint Committee on Powder Diffraction Standards (JCPDS) [PDF]

, 1982
No ...
Tilton, Jeffrey A.
core  

Tectonothermal Evolution of the NW Wyoming Province: Insights From Coupled Garnet Lu‐Hf and Sm‐Nd Geochronology

Journal of Metamorphic Geology, Volume 43, Issue 8, Page 839-862, October 2025.
ABSTRACT Understanding how Paleoproterozoic orogenic processes shaped the assembly of Laurentia remains a critical puzzle in deciphering Earth's ancient tectonic history. To address this challenge, the Montana metasedimentary terrane in the northwest Wyoming Province, which preserves a complex record of multiple metamorphic episodes, provides a unique ...
Tsai‐Wei Chen, Jeff Vervoort, Julia Baldwin, Peter Baker   +3 more
wiley   +1 more source

Fluid or Melt? Distinguishing Syn‐Deformational Interaction Pathways

Journal of Metamorphic Geology, Volume 43, Issue 8, Page 810-838, October 2025.
ABSTRACT Understanding whether deformation occurred in the presence of aqueous fluid or silicate melt is crucial for interpreting ductile shear zones, impacting their thermal and geochemical evolution, and having rheological consequences. To identify the syn‐deformational fluid type, we investigate contrasting shear zones active during the Alice ...
Hindol Ghatak, Nathan R. Daczko, Sandra Piazolo, Tom Raimondo   +3 more
wiley   +1 more source

Optimization of the process of obtaining RE 2 O 3 from xenotime using statistical design

Cerâmica
The study of the production of the mixed rare earth oxide (RE2O3) from xenotime via hydrometallurgy was performed to evaluate the significance of the effects of three factors including the melting temperature (A), the ratio of NaOH/xenotime (B), and time
Y. F. Gomes, S. Ribeiro, M. C. B. Costa, F. V. Motta   +3 more
doaj   +1 more source

Interactions of rare earth elements with living organisms and emerging biotechnical applications

PLANTS, PEOPLE, PLANET, Volume 7, Issue 5, Page 1251-1274, September 2025.
Rare earth elements (REEs) are critical resources required to achieve net‐zero carbon emission targets and energy security. However, rising demand for REEs coupled with significant extraction and processing challenges and geopolitical risks restricts access to REE resources.
Samantha A. McGaughey, Shagufta Iqbal, Annamaria De Rosa, Jessica A. Caley, Anna H. Kaksonen, Denys Villa‐Gomez, Caitlin S. Byrt   +6 more
wiley   +1 more source

The Occurences of Heavy Mineral Placer at Kendawangan and Its Surrounding, West Kalimantan Province [PDF]

, 2017
The main objective of this study is to identify and to determine the variation and content of heavy mineral placer of Kendawangan coastal, offshore and its surrounding area.
Setyanto, A. (Agus), Surachman, M. (Maman)   +1 more
core   +3 more sources

The Tubotomaculum Enigma and the Rise of Benthic Life During the Opening of the Western Mediterranean Basin

Geobiology, Volume 23, Issue 5, September/October 2025.
ABSTRACT Large‐scale geological processes shape microbial habitats and drive the evolution of life on Earth. During the Oligocene, convergence between Africa and Europe led to the opening of the Western Mediterranean Basin, a deep‐ocean system characterized by fluid venting, oxygen depletion, and the absence of benthic fauna.
Simone Bernardini, Anas Abbassi, Paola Cipollari, Giancarlo Della Ventura, Cesareo Saiz‐Jimenez, Enrico Mugnaioli, Luigi Jovane, Armida Sodo, Fabio Bellatreccia, Mohamed N. Zaghloul, Domenico Cosentino   +10 more
wiley   +1 more source