Results 41 to 50 of about 5,382 (223)

Controls on zircon age distributions in volcanic, porphyry and plutonic rocks [PDF]

Geochronology
The distribution of zircon crystallisation ages in igneous rocks has been proposed to provide insights into the dynamics of underlying magma reservoirs.
C. Nathwani, D. Szymanowski, L. Tavazzani, S. Markovic, A. L. Virmond, C. Chelle-Michou   +5 more
doaj   +1 more source

Lattice and Surface Engineering of Transition Metal Oxide Photoanodes for Efficient Photoelectrochemical Water Splitting

EcoEnergy, EarlyView.
This review highlights phase control, facet control, and atomic vacancy engineering as key strategies to enhance charge transport, light harvesting, and surface activity in PEC photoanodes. ABSTRACT Photoelectrochemical (PEC) water splitting is a promising approach for converting solar energy into hydrogen, yet the performance of transition metal oxide
Seonmi Ko, Jehoon Lee, Tae Sung Kim, Taeuk Park, Hyo Jin Park, Junyeob Yeo   +5 more
wiley   +1 more source

Fabrication of a Zircon Microfiltration Membrane for Culture Medium Sterilization

Membranes, 2023
Multilayer ceramic membranes to be used for bacteria removal by filtration were prepared from ceramic materials. They consist of a macro-porous carrier, an intermediate layer and a thin separation layer at the top.
Zineb Khebli, Ferhat Bouzerara, Nourddine Brihi, Alberto Figoli, Francesca Russo, Francesco Galiano, Sadek Chahredine   +6 more
doaj   +1 more source

Thermochronologic Constraints on the Extensional History of the Ibex Hills, Southeastern Black Mountains, Death Valley, California

Geological Journal, EarlyView.
A. Modeled T‐t paths for samples in the northern Ibex Hills, showing steady cooling throughout much of the Cenozoic, until rapid Miocene cooling. B. Weighted mean paths for each sample in this study. Note that all show a rapid cooling event at or just after 10 Ma, which is interpreted to represent exhumation as a result of regional extenstion ...
Zachariah D. Fleming
wiley   +1 more source

Zircon Solubility, Metamict ZrSiO4 Replacement, and Hydrothermal Zircon Formation at Upper Crustal Pressures

Geochemistry, Geophysics, Geosystems
Stable and inert under most conditions, zircon can be dissolved and precipitated by aqueous fluids in the upper crust. Geochemical models using currently available thermodynamic properties for Zr aqueous species at 0.2 GPa predict that zircon solubility ...
John C. Ayers, Chen Zhu
doaj   +1 more source

Effects and mechanism of different grinding media on the flotation behaviors of typical silicate minerals

工程科学学报, 2016
The flotation behavior of typical silicates was studied at wet grinding conditions with different grinding media (iron ball and zircon ball) when dodecylamine or sodium oleate was chosen as a collector.
HU Zhen-feng, SUN Chuan-yao
doaj   +1 more source

Notable Impact of Paleotectonic Stress on Gold Mineralisation in the West Qinling Orogen

Geological Journal, EarlyView.
By applying fuzzy clustering and multiple inverse methods, we systematically processed the data of vein and fault slip in this ore deposit to reveal the transition of orogenic geological environment and paleotectonic stress field. Our research results show two different stress states: the northwest–southeast extensional stress field and the northeast ...
Hongyan Wang, Aibing Chen, Jian Yang, Yuan Zhang   +3 more
wiley   +1 more source

Sr-Nd isotopic characteristic, U-Pb zircon geochronology, and petrogenesis of Najmabad Granodiorite batholith, Eastern Iran

Journal of Economic Geology, 2012
The study area is located south of Ghonabad in Eastern Iran. This area is situated between two major faults, Darouneh to the north and Dashtbyaz to the south. The movements of these faults cased major dislocation of this block.
Mehrab Moradi Noghondar, Mohammad Hassan Karimpour, G. Lang Farmer, Charles R. Stern   +3 more
doaj   +1 more source

Geochronology of the Suomenniemi rapakivi granite complex revisited: Implications of point-specific errors on zircon U-Pb and refined λ₈₇ on whole-rock Rb-Sr [PDF]

Bulletin of the Geological Society of Finland, 2015
Multi-grain isotope dilution and secondary ion microprobe zircon U-Pb as well as wholerock Rb-Sr isotope dilution data on the late Paleoproterozoic Suomenniemi rapakivi granite complex (exposed on the northern flank of the Wiborg batholith in ...
O.T. Rämö, I. Mänttäri
doaj   +1 more source

Geochemical and Geological Investigation of Skarn‐Type Pb–Zn Mineralization in Hastanetepe (Balya‐Balıkesir, Türkiye): An Approach Based on Fluid Inclusions, Sulphur Isotopes and Geochemical Data

Geological Journal, EarlyView.
Integrated petrographic, mineralogical and geochemical data from the Hastanetepe Pb–Zn deposit (Balya, Türkiye) reveal multi‐stage hydrothermal alteration and a magmatic sulphur source. Fluid inclusion and sulphur isotope results indicate a complex fluid evolution responsible for skarn‐type Pb–Zn mineralization along limestone–dacite contacts ...
Esra Ünal‐Çakır
wiley   +1 more source