Results 141 to 150 of about 21,944 (246)

U-Pb Ages of Lunar Apatites [PDF]

, 2006
Apatite is one of the minerals that is rarely utilized in U-Pb geochronology, compared to some other U-rich accessory phases. Relatively low U concentration, commonly high proportion of common Pb and low closure temperature of U-Pb system of apatite ...
Meyer, Charles, Nemchin, A. A., Pidgeon, R. T., Vaughan, J.   +3 more
core   +1 more source

Managing Fractured Ceramic Restorations: Current Evidence and Best Practices—A Scoping Review

Journal of Esthetic and Restorative Dentistry, Volume 38, Issue 5, Page 1032-1071, May 2026.
ABSTRACT Objective This scoping review aims to assess the effect of different protocols on the outcome of ceramic restoration repairs. Materials and Methods An electronic search was conducted in three databases (PubMed, Cochrane Library, and Embase), up to July 31st 2025, with previously identified MeSH terms. Results Out of the 2423 records, title and
Gabriela Almeida, Joana A. Marques, Markus B. Blatz, Rui I. Falacho   +3 more
wiley   +1 more source

Timing of Metamorphism and Deformation in the Neoarchean Quetico Metasedimentary Belt, Superior Craton, Constrained by Garnet Trace‐Element Mapping and Lu–Hf Geochronology

Journal of Metamorphic Geology, Volume 44, Issue 4, Page 265-286, May 2026.
ABSTRACT The Quetico subprovince of the Superior Province is among the largest metasedimentary belts globally and provides evidence of tectonic processes at play during the final stages of Archean cratonization. Although previous studies have shown that deformation and metamorphism of the 2.7‐Ga turbiditic protolith resulted in regional subvertical ...
Adrian G. Rehm, Antoine Godet, Doug Tinkham, Carl Guilmette, Matthijs A. Smit   +4 more
wiley   +1 more source

A >300 Myr Long‐Lived Topographic Highland Along the Northern North China Craton Margin Driven by Multistage Continental Convergence

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Topographic highlands commonly develop along convergent plate boundaries through long‐term processes such as subduction and continental collision. However, the pre‐Cenozoic mountain‐building history of deep‐time orogenic systems in northeastern Pangaea remains poorly constrained due to later tectonic overprinting and denudation.
Heng Peng, Licheng Wang, Jianqiang Wang, Yazuo Niu, Yahui Yue, Jingbo Sun, Bitian Wei, Chiyang Liu, Massimiliano Zattin, Lin Ding   +9 more
wiley   +1 more source

New insights from U–Pb zircon dating of Early Ordovician magmatism on

, 2008
The Central Iberian–Ossa-Morena transition zone (SW Iberian Massif) represents a segment of the northern Gondwana margin with a long geodynamic evolution, characterized by the superposition of Cadomian and Variscan events. The Early Ordovician is mainly represented by porphyritic felsic volcaniclastic rocks (the Urra Formation) that pass up into a ...
Sola, A. Rita, Pereira, M. Francisco, Williams, Ian S., Ribeiro, Luisa, Neiva, Ana M.R., Montero, Pilar, Bea, Fernando, Zinger, T.   +7 more
openaire   +1 more source

P-T-t path for the Archean Pikwitonei Granulite Domain and Cross Lake Subprovince, Manitoba, Canada [PDF]

The rationale was outlined for constructing pressure-temperature-time (P-T-t) paths by using U-Pb dating of garnet produced in thermobarometrically sensitive reactions. In an example from the Pikwitonei granulites of the Northwestern Superior Province of
Bohlen, S. R., Hanson, G. N., Mezger, K.
core   +1 more source

Photoelectrochemical Hydrogen Peroxide Production via Simultaneous Reduction and Oxidation Processes

Chemistry – A European Journal, Volume 32, Issue 14, 15 April 2026.
Hydrogen peroxide (H2O2) is an important chemical substance and also a promising carbon‐free clean fuel. The design of a sophisticated photoelectrochemical (PEC) reaction system enables the solar‐driven H2O2 production through simultaneous water oxidation and oxygen reduction processes (H2O2/H2O2‐PEC cells).
Tetsuro Soejima, Shin‐ichi Naya, Hiroaki Tada   +2 more
wiley   +1 more source

U-Pb dating of zircon in Mesosiderite Asuka-882023

U-Pb dating of zircon in Mesosiderite Asuka-882023
第4回極域科学シンポジウム 個別セッション：[OA] 南極隕石 11月14日（木）～15日（金） 国立国語研究所 ２階ラウンジ（講堂前）
openaire  

A database of detrital zircon U–Pb ages in the North China Craton from the Paleoproterozoic to the early Palaeozoic

Geoscience Data Journal
U–Pb dating of detrital zircon is widely used in geology to identify the source of sediments and constrain palaeogeography and tectonic history. We collected the detrital zircon from the Paleoproterozoic to early Palaeozoic strata to understand the North
Yiming Dong, Pengfei Zuo, Zihan Xiao, Yilan Zhao, Deshun Zheng, Fengbo Sun, Yu Li   +6 more
doaj   +1 more source

Zircon U-Pb Dating and its Applicability toward Engineering Geology

Journal of the Japan Society of Engineering Geology, 2017
Hisatoshi ITO, Shuichi HASEGAWA
openaire   +2 more sources