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Can lamprophyres resolve the genetic controversy over mesothermal gold deposits?
Geology, 1988Associations between calc-alkaline lamprophyres and mesothermal gold deposits (Archean to Tertiary) in which the lamprophyres are coeval (as well as cospatial) with mineralization are increasingly recognized worldwide. Our suggested hypothesis regards lamprophyres as transporting agents for Au from Au-rich sources in the deep mantle, which then undergo
Nicholas M.S. Rock, David I. Groves
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Geology of the Hammer Down mesothermal gold deposit, Newfoundland Appalachians, Canada
Canadian Journal of Earth Sciences, 1996The Hammer Down gold deposit is one of the most significant mesothermal vein-type gold deposits in the Canadian Appalachians. It is located within a complex sequence of Ordovician, mafic-dominated tholeiitic and calc-alkalic and arc-related volcanic rocks, which was intruded by Silurian felsic porphyry dykes.
Gaboury, Damien +3 more
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Particles trapped in the Potential Well behind a Mesothermally Moving Satellite
Nature, 1967Anomalous LF plasma oscillation by particles trapped in potential well behind satellite applied to ionospheric ...
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Geodynamic setting of mesothermal gold deposits: An association with accretionary tectonic regimes
Geology, 1990Mesothermal gold provinces of Phanerozoic age are characteristically associated with regional structures along which allochthonous terranes have been accreted onto continental margins or arcs. A recurring sequence of transpressive deformation, uplift, late kinematic mineralization, and shoshonitic magmatism is consistent with thermal reequilibration of
Derek A. Wyman, Robert Kerrich
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Mesothermal gold veins and metamorphic devolatilization in the northwestern Alps: The temporal link
Geology, 1999A long-standing debate surrounds the source of hydrothermal fluids that form gold lodes late in the metamorphic history of orogenic belts. 40 Ar/ 39 Ar dating of hydrothermal muscovite shows that gold lodes in the northwestern Alps formed from 31.6 to 10.6 Ma.
Igor M. Villa +2 more
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Electron Properties in Collisionless Mesothermal Plasma Expansion: Fully Kinetic Simulations
IEEE Transactions on Plasma Science, 2015This paper presents a fully kinetic particle-in-cell simulation of collisionless mesothermal plasma expansion with a focus on the macroscopic electron properties. The results show that the electron thermal properties are anisotropic and nonuniform. In the beam core region, the electrons are thermalized due to interactions between the trapped electrons ...
Yuan Hu, Joseph Wang
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Prokaryotic Community Characterization in a Mesothermic and Water- Flooded Oil Reservoir in Colombia
Geomicrobiology Journal, 2016The prokaryotic community at the “La Cira-Infantas” oil field, located in Colombia's Middle Magdalena Valley Basin, was characterized using 16S rRNA gene sequence analysis. This characterization is a first-step in assessing the dynamics of microbial degradation and defining strategies that may increase oil recovery and quality at the site. Two 16S rRNA
Francisco Martínez-Pérez +8 more
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Ore mineralogy of the mesothermal gold lodes of the Dolgellau gold belt, North Wales
Applied Earth Science, 2002AbstractThe auriferous quartz-sulphide veins of the Dolgellau gold belt represent the finest example of a pre-Acadian, mesothermal gold-lode metallogenic province in the United Kingdom. The gold lodes are composite, multi-stage, ribbon-quartz bodies occupying shear zones in clastic marine sedimentary rocks, including black mudstones, of Middle to Upper
Richard E. Bevins +2 more
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Applied Earth Science, 2004
AbstractAntimony and arsenic are commonly mobilised into the environment from mesothermal mineral deposits. Both these metalloids are potentially toxic in the environment when dissolved in water at low levels (
Paul M. Ashley +2 more
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AbstractAntimony and arsenic are commonly mobilised into the environment from mesothermal mineral deposits. Both these metalloids are potentially toxic in the environment when dissolved in water at low levels (
Paul M. Ashley +2 more
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Quantitative classification of soil nutrient regimes of some mesothermal Douglas-fir ecosystems
1985Previous attempts to classify nutrient regimes of forest soil have been qualitative evaluations utilizing vegetation and/or physiographic site characteristics, morphological soil properties, and parent material. The major objective of this study was to describe and classify the soil nutrient regimes (SNR) of some Pseudotsuga menziesii ecosystems on ...
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