Results 91 to 100 of about 7,496 (223)
Iraqi Geological Journal, 2017 This study was conducted to evaluate the zircon minerals in Wadi Al-Mezrab, South Jordan. Zircon at the study area belongs to the Middle member of the Dubaydib Formation of the Middle Ordovician age.
Ahmad Al-Malabeh
doaj +1 more source
New Zealand Geological Timescale 2025
New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.New Zealand Geological Timescale 2025 (NZGT 2025) is the first comprehensive update and revision of the New Zealand Geological Timescale in a decade. The criteria used to establish age ranges of New Zealand Stages within the NZGT have been reviewed, calibrated, and revised where required against the 2023/04 International Chronostratigraphic Chart and ...
Christopher D. Clowes +13 more
wiley +1 more source
REE-bearing minerals in the Rapakavi Grante, Southern Finland
Open Geosciences, 2015 The studied rock samples belong to the classic1615–1645 Ma Wiborg Rapakivi granite terrane of southeasternFinland. Geochemical studies show that the rapakivigranites and associated rocks form metaluminousto peraluminous A-type granites and plot in the ...
Al-Ani Thair
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The influence of strontium content and sintering temperature on monazite stability [PDF]
Science of SinteringThis paper shows a simple way to synthesize a series of Ce1-xSrxPO4 ceramic materials using acetate solutions of Ce and Sr instead of nitrate which were used so far.
Mirković Miljana +4 more
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Interpreting granulite facies events through rare earth element partitioning arrays [PDF]
, 2017 The use of rare earth element (REE) partition coefficients is an increasingly common tool in metamorphic studies, linking the growth or modification of accessory mineral geochronometers to the bulk silicate mineral assemblage.
Clark, C. +5 more
core +1 more source
New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.Late Cenozoic silty and sandy sediments in the semi‐arid Mackenzie basin have been eroded and redeposited almost entirely from nearby Mesozoic greywacke basement. Fine (commonly micron scale) phyllosilicate flakes, including clays, are randomly distributed and randomly oriented, and the sediments are porous.
Dave Craw, Cathy Rufaut, Marshall Palmer
wiley +1 more source
Materials & Design, 2020 Thorium (Th) is an associated ore of rare earth metals that is radioactive and harmful to the environment, but it is also a potential nuclear fuel replacement for uranium.
Hao Zhang +6 more
doaj +1 more source
Mineralogy and Formation of a Platinum Placer Deposit, Southern South Island, New Zealand
New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.Placer platinum group minerals (PGM), with subordinate detrital gold, have been concentrated in Pleistocene coastal sands near the present Foveaux Strait shoreline. This study characterises the PGM in what is New Zealand's only identified PGM deposit.
Marshall Palmer, Dave Craw
wiley +1 more source
Research of the thorium purification at monazite refinement processes [PDF]
, 2016 This paper is aimed to the research of the thorium purification processes at monazite refinement processes. We have investigated different solution containing thorium with different mix of rare-earth elements.
Malin, A. V. +3 more
core +1 more source
Tectonics, Volume 45, Issue 3, March 2026.Abstract In the Afghan Hindu Kush, the 223–209 Ma (≤800°C) Salang batholith is part of the Silk‐Road magmatic arc that was built on ∼40‐km‐thick Turan‐Karakum block continental crust. The batholith constitutes the hanging wall of the Herat‐Panjshir‐Badakhshan—the Paleo‐Tethys—suture zone, vestige of the subducted Paleozoic‐early Mesozoic Paleo‐Tethys ...
Lothar Ratschbacher +8 more
wiley +1 more source