搜索结果: 1-15 共查到“知识库 理学 Magma”相关记录38条 . 查询时间(0.046 秒)
The lunar magma ocean volatile signature recorded in chlorine-rich glasses in KREEP basalts 15382 and 15386
chlorine fluorine Moon water glass
2017/4/10
The last liquids of the lunar magma ocean, known as urKREEP, should be highly enriched in volatiles, such as water,
fluorine, and chlorine. We find chlorine-rich glasses in two pristine KREEP basalts...
The 3550 year BP-1944 A.D.magma-plumbing system of Somma-Vesuvius: constraints on its behaviour and present state through a review of Sr-Nd isotope data
Somma-Vesuvius magma chamber crustal contamination
2015/9/15
Vesuvius, dominating the densely-populated Neapolitan area, is one of the most dangerous volcanoes in the World. Its destructive power derives from energetic subplinian and plinian eruptions, such as ...
The relationship between volatile content and the eruptive style of basaltic magma: the Etna case
volatile content eruptive style
2015/9/14
Fourier Transform Infrared (FT-IR) spectroscopic analyses of melt inclusions from four explosive eruptions of Etna (Italy) were conducted to determine pre-eruptive dissolved volatile concentrations. T...
A possible model for initiationof ULF oscillation in magma
ULF oscillations magma volcano electromagnetic emission
2015/9/14
During the period just prior to an earthquake, an electomagnetic emission develops over seismic zones. In this paper, a model of excitation of magnetic fields over zones of volcanic activity is propos...
Noble gas solubility in silicate melts:a review of experimentation and theory, and implications regarding magma degassing processes
noble gases solubility degassing silicate melts
2015/9/10
Noble gas solubility in silicate melts and glasses has gained a crucial role in Earth Sciences investigations and
in the studies of non-crystalline materials on a micro to a macro-scale. Due to their...
The strong influence of physical conditions during magma formation on Fe equilibria offers a large variety of
possibilities to deduce these conditions from Fe-bearing phases and phase assemblages fou...
A Vent-Field-Scale Model of the East Pacific Rise 9°50'N Magma-Hydrothermal System
Vent-Field-Scale Model East Pacific Rise 9°50'N Magma-Hydrothermal System
2015/7/14
This paper describes a two-limb single-pass modeling approach constrained by vent temperature, heat flow, vent geochemistry, active-source seismology, and seismically inferred circulation geometry to ...
Formation of a laccolith by magma pulses: Evidence from modal and chemical composition of the 500 m long borehole section through the Permo-Carboniferous Landsberg laccolith (Halle Volcanic Complex)
laccolith formation magma pulses rhyolite Halle Volcanic Complex
2017/4/10
The 500 m long section through the upper part of the Permo-Carboniferous Landsberg laccolith (Halle Volcanic Complex)
was sampled every 25 meters. The modal proportions between plagioclase and K-feld...
Tracking the Evolution of Mid Cenozoic Silicic Magma Systems in the Southern Chocolate Mountains Region, California Using Zircon Geochemistry and Quartz and Zircon Geothermometry
Chocolate Mountains zircon quartz geothermometer geochemistry
2015/1/16
During the mid Cenozoic, the Chocolate Mountains region of southeastern California experienced crustal extension slightly before, during, and after the main pulse of magmatism. This combined with mid-...
Evidence of magma activation beneath the Harrat Lunayyir basaltic field (Saudi Arabia) from attenuation tomography
Seismic attenuation model and the earth's crust Cenozoic basalt the earthquake happened S wave seismograms damping structure
2015/1/6
We present a seismic attenuation model for the crust beneath the Cenozoic basaltic field of Harrat Lunayyir (western Saudi Arabia), where a strong seismic swarm occurred in 2009. The tomography invers...
Using the Oxidation State of Iron Plagioclase to Evaluate Magma Oxygen Fugacity: A microXANES Study
Oxidation State Iron Plagioclase Evaluate Magma Oxygen Fugacity A micro XANES Study
2014/10/22
The goal of this study is to explore the relationship between the oxygen fugacity of a melt and the Fe3+/FeTotal of plagioclase crystals produced from the melt. If the relationship between the two can...
High Pressure Liquidus Studies of the Inferred Magma Composition of the Kiglapait Layered Intrusion, Labrador, Canada
High Pressure Liquidus Studies Inferred Magma Composition Kiglapait Layered Intrusion Labrador Canada
2014/10/22
The depth and nature of the source region of the Kiglapait Layered Intrusion, Labrador, Canada, were experimentally explored using rocks representing the troctolitic bulk composition of the intrusion....
Evolution Of Volatile Content Of Th Parent Magma Of Th 1875 Eruption Of Askja Volcano, Iceland
Evolution Of Volatile Content Parent Magma The 1875 Eruption Askja Volcano, Iceland
2014/10/21
The Askja central volcano is located in the northeastern rift zone in central Iceland. The bulk of the eruption of Askja on March 28-29 1875 consisted of a plinian eruption that lasted 6-7 hours, prod...
Mantle-derived arc related mafic enclaves and host orthogneiss from the Shyok Suture Zone of NE Ladakh, India: An evidence of magma-mixing
mafic enclaves (ME) orthogneiss (OG) magma-mixing Shyok Suture Zone NE Ladakh
2017/4/11
The Shyok valley in the northern Ladakh is a linear NW-SE trending suture zone (Shyok Suture Zone) and separates
two distinct terranes, the southern continental margin of Eurasian Plate to north, and...
Newer Dolerite dykes, Jharkhand, India: a case study of magma generation, differentiation and metasomatism in a subduction zone setting
Newer Dolerite subduction clouded plagioclase decompression mantle
2017/4/11
The NE-SW, NW-SE and E-W trending Proterozoic Newer Dolerite dykes around Chaibasa, Jharkhand, India are
found to intrude Singhbhum Granites of late Archean age. Clouded plagioclase, bastitised ortho...