Geochemistry and U–Pb Age Dating of Zircon as a Petrogenetic Tool for Magmatic and Hydrothermal Processes in Wadi Ras Abda Syenogranite, Eastern Desert, Egypt

2021 ◽  
Author(s):  
Ahmed E. Abdel Gawad ◽  
Sergey G. Skublov ◽  
Ekaterina V. Levashova ◽  
Mohamed M. Ghoneim
Keyword(s):  
Eastern Desert ◽  
Age Dating ◽  
Hydrothermal Processes

scholarly journals Hydrogeochemical characteristics and age dating of groundwater in the Quaternary and Nubian aquifer systems in Wadi Qena, Eastern Desert, Egypt

2015 ◽  
Vol 1 (3) ◽  
pp. 213-232 ◽  
Author(s):  
A. A. Abdel Moneim ◽  
E. M. Seleem ◽  
S. A. Zeid ◽  
S. G. Abdel Samie ◽  
Sameh Zaki ◽  
...  
Keyword(s):  
Eastern Desert ◽  
Age Dating ◽  
Aquifer Systems ◽  
Nubian Aquifer ◽  
Wadi Qena

Radiocarbon Age Dating of 1,000-Year-Old Pearls from the Cirebon Shipwreck (Java, Indonesia)

2017 ◽  
Vol 35 (8) ◽  
pp. 728-736 ◽  
Author(s):  
Michael S. Krzemnicki ◽  
Laurent E. Cartier ◽  
Irka Hajdas
Keyword(s):  
Age Dating ◽  
Radiocarbon Age

Dimensionally-Controlled Hydrothermal Tm3+-doped Oxidic Nanocrystals and Their Photoluminescence Properties

2010 ◽  
Vol 1247 ◽  
Author(s):  
Rocío Calderón-Villajos ◽  
Carlos Zaldo ◽  
Concepción Cascales
Keyword(s):  
Single Crystals ◽  
Fluorescence Lifetimes ◽  
Photoluminescence Properties ◽  
Reaction Conditions ◽  
Hydrothermal Processes ◽  
Bulk Single Crystals ◽  
Template Free ◽  
Reaction Media

AbstractControlled reaction conditions in simple, template-free hydrothermal processes yield Tm-Lu2O3 and Tm-GdVO4 nanocrystals with well-defined specific morphologies and sizes. In both oxide families, nanocrystals prepared at pH 7 reaction media exhibit photoluminescence in ∼1.95 μm similar to bulk single crystals. For the lowest Tm3+ concentration (0.2 % mol) in GdVO4 measured 3H4 and 3F4 fluorescence lifetimes τ are very near to τrad.

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