Results 31 to 40 of about 22,117 (186)

Balancing organic carbon supply and consumption in the ocean's interior: Evidence from repeated biogeochemical observations conducted in the subarctic and subtropical western North Pacific

open access: yesLimnology and Oceanography, Volume 63, Issue 5, Page 2015-2027, September 2018., 2018
Abstract The heterotrophic prokaryotic carbon demand (PCD) in the ocean's interior often substantially exceeds (by up to two orders of magnitude) the amount of organic carbon supplied by sinking particulate organic carbon (POC). A hypothesis to explain this carbon imbalance proposes that some non‐steady‐state processes have not been considered in ...
Mario Uchimiya   +7 more
wiley   +1 more source

Potential for Porphyry Copper Deposits in Northern Tōhoku (or the Exploration Potential for Base and Precious Metal Deposits in Japan 2020)

open access: yesResource Geology, Volume 68, Issue 2, Page 144-163, April 2018., 2018
Japan is a land rich in mineral deposits, with a long mining history. Exploration for metallic deposits on land essentially stopped 25 years ago. Modern exploration for porphyry copper deposits was minimal. We conclude that the exploration potential of Japan is high because exploration stopped too early and certainly before it could have benefited from
Antonio Arribas, Toshio Mizuta
wiley   +1 more source

Geology, Mineralogy, Fluid Inclusion, and H–O–S–Pb Isotope Constraints on Ore Genesis of the Keyue Sb–Pb–Zn–Ag Deposit in Southern Tibet

open access: yesGeofluids, Volume 2018, Issue 1, 2018., 2018
The Keyue deposit is a medium‐sized deposit similar to the Zhaxikang deposit within the North Himalayan Metallogenic Belt (NHMB). The ore formation can be divided into Pb–Zn mineralization (stages 1 and 2), Sb–Ag mineralization (stages 3 and 4), and Sb–Hg mineralization (stages 5 and 6).
Da Wang   +4 more
wiley   +1 more source

Modelling Seismically Induced Mesothermal Goldfields along the Deep‐Rooted Cadillac‐Larder Lake Fault, Abitibi, Canada

open access: yesGeofluids, Volume 2018, Issue 1, 2018., 2018
Gold deposits are not uniformly distributed along major faults due to complex (and long‐debated) interactions between seismicity, hydrothermalism, and structural heterogeneities. Here, we use static stress modelling (SSM) to quantitatively investigate these interactions, by exploring the role of Cadillac‐Larder Lake Fault (CLLF) Archean seismicity in ...
Pierre Bedeaux   +4 more
wiley   +1 more source

Plasmonic Gold Helices for the visible range fabricated by oxygen plasma purification of electron beam induced deposits [PDF]

open access: yes, 2016
Electron beam induced deposition (EBID) currently provides the only direct writing technique for truly three-dimensional nanostructures with geometrical features below 50 nm. Unfortunately, the depositions from metal-organic precursors suffer from a substantial carbon content.
arxiv   +1 more source

Molecular dynamics simulation of gold cluster growth during sputter deposition [PDF]

open access: yesJ. Appl. Phys. 119, 185301 (2016), 2016
We present a molecular dynamics simulation scheme that we apply to study the time evolution of the self-organized growth process of metal cluster assemblies formed by sputter-deposited gold atoms on a planar surface. The simulation model incorporates the characteristics of the plasma-assisted deposition process and allows for an investigation over a ...
arxiv   +1 more source

Genesis of the Bairendaba Ag‐Zn‐Pb Deposit, Southern Great Xing’an Range, NE China: A Fluid Inclusion and Stable Isotope Study

open access: yesGeofluids, Volume 2017, Issue 1, 2017., 2017
The Bairendaba deposit is the largest Ag‐Zn‐Pb deposit in Inner Mongolia. Vein and disseminated ores occur in biotite‐plagioclase gneiss and quartz diorite along regional EW trending faults. Microthermometric data for H2O‐NaCl ± CH4 ± CO2 fluid inclusions record a decrease in homogenization temperature and salinity of ore‐forming fluids with time ...
Shunda Li   +5 more
wiley   +1 more source

Ore geology problems and the human factor. Part 2. Magmatism and mesothermal ore-formation

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2018
The relevance of the research. The coexistence of the granitic, basaltic, metamorphic, polygenetic hypotheses of one and the same hydrothermal deposits of gold, coloured metals (Sn, W, Mo, Cu, Pb, Zn, Ni, Co) formation stimulates investigations directed ...
Igor Vasilyevich Kucherenko
doaj   +2 more sources

Laser Ablation ICPMS Analysis of Pyrite and U-Pb Zircon Dating of Host Rocks From the Tersang Gold Deposit, Malaysia

open access: yesAIMS Geosciences, 2017
The Central gold belt of peninsular Malaysia comprises a number of gold deposits located in the east of the N-S striking Bentong-Raub Suture Zone. The Tersang gold deposit is a mesothermal, orogenic gold deposit, which is hosted in sandstone, shale ...
Charles Makoundi, Khin Zaw, R.R. Large
doaj   +1 more source

Functionalization of Amorphous Chalcogenide and Titanium Oxide Layers by Gold Nanoparticles [PDF]

open access: yes, 2014
The technology problems of fabricating different, nanometers sized gold particles in the layered composites like light-sensitive chalcogenide glass/gold nanoparticles/transparent substrate or titanium/titanium oxide/gold nanoparticles were investigated in our work.
arxiv   +1 more source

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