Evidence from plutonic xenoliths for magma differentiation, mixing and storage in a volatile-rich crystal mush beneath St. Eustatius, Lesser Antilles [0.03%]
圣尤斯特歇斯岛玄武岩包体中挥发份富集晶体浆的岩浆分异、混合和储存作用的证据
George F Cooper,Jon D Blundy,Colin G Macpherson et al.
George F Cooper et al.
Quantifying the storage conditions and evolution of different magmatic components within sub-volcanic plumbing systems is key to our understanding of igneous processes and products. Whereas erupted magmas represent a portion of the eruptibl...
Christian J Renggli,Sebastian Wiesmaier,Cristina P De Campos et al.
Christian J Renggli et al.
A time series of experiments at high temperature have been performed to investigate the influence of particle settling on magma mixing. A natural rhyolite glass was held above a natural basalt glass in a platinum crucible. After melting of ...
Melt segregation from silicic crystal mushes: a critical appraisal of possible mechanisms and their microstructural record [0.03%]
硅质晶体凝固层熔离析机制及其显微构造记录的再研究
Marian B Holness
Marian B Holness
One of the outstanding problems in understanding the behavior of intermediate-to-silicic magmatic systems is the mechanism(s) by which large volumes of crystal-poor rhyolite can be extracted from crystal-rich mushy storage zones in the mid-...
How deceptive are microstructures in granitic rocks? Answers from integrated physical theory, phase equilibrium, and direct observations [0.03%]
岩石的微观结构具有欺骗性吗?物理理论、相平衡和直接观测给出了答案
M B Holness,J D Clemens,R H Vernon
M B Holness
In this contribution, we address the vexed question of the extent to which microstructures in granitic rocks reflect their igneous histories or have been masked by later events. The previous works have tended to address the problem either u...
Metasomatism and the crystallization of zircon megacrysts in Archaean peridotites from the Lewisian complex, NW Scotland [0.03%]
太古代地幔岩石中的大型锆石晶体的形成与交代作用——来自苏格兰西北部Lewisian杂岩系的证据
John W Faithfull,Tim J Dempster,John M MacDonald et al.
John W Faithfull et al.
Zircon megacrysts are locally abundant in 1-40 cm-thick orthopyroxenite veins within peridotite host rocks in the Archaean Lewisian gneiss complex from NW Scotland. The veins formed by metasomatic interaction between the ultramafic host and...
Microstructural evidence for crystallization regimes in mafic intrusions: a case study from the Little Minch Sill Complex, Scotland [0.03%]
苏格兰Little Minch岩墙群辉长质侵入体结晶模式的显微构造证据
Gautier Nicoli,Marian Holness,Jerome Neufeld et al.
Gautier Nicoli et al.
The magma forming the 20 m thick crinanitic/picrodoleritic Dun Raisburgh sill, part of the Little Minch Sill Complex of NW Scotland, comprised a mafic carrier liquid with a crystal cargo of plagioclase and olivine (1 vol%). The olivine comp...
The accuracy of standard enthalpies and entropies for phases of petrological interest derived from density-functional calculations [0.03%]
从密度泛函计算中获得的地质界面对应的标准焓和熵的准确性
Artur Benisek,Edgar Dachs
Artur Benisek
The internal energies and entropies of 21 well-known minerals were calculated using the density functional theory (DFT), viz. kyanite, sillimanite, andalusite, albite, microcline, forsterite, fayalite, diopside, jadeite, hedenbergite, pyrop...
Source and fractionation controls on subduction-related plutons and dike swarms in southern Patagonia (Torres del Paine area) and the low Nb/Ta of upper crustal igneous rocks [0.03%]
南巴塔哥尼亚(托雷斯德尔派恩地区)与俯冲相关的花岗岩和岩墙群的源区及分异作用以及上地壳火成岩Nb/Ta比值偏低的原因
Othmar Müntener,Tanya Ewing,Lukas P Baumgartner et al.
Othmar Müntener et al.
The subduction system in southern Patagonia provides direct evidence for the variability of the position of an active continental arc with respect to the subducting plate through time, but the consequences on the arc magmatic record are les...
Effect of water on the fluorine and chlorine partitioning behavior between olivine and silicate melt [0.03%]
水对橄榄石和硅酸盐熔体中氟氯分配行为的影响研究
Bastian Joachim,André Stechern,Thomas Ludwig et al.
Bastian Joachim et al.
Halogens show a range from moderate (F) to highly (Cl, Br, I) volatile and incompatible behavior, which makes them excellent tracers for volatile transport processes in the Earth's mantle. Experimentally determined fluorine and chlorine par...
The effect of liquid composition on the partitioning of Ni between olivine and silicate melt [0.03%]
液相组成对Ni在橄榄石和硅酸盐熔体间的分配系数的影响
Andrew K Matzen,Michael B Baker,John R Beckett et al.
Andrew K Matzen et al.
We report the results of experiments designed to separate the effects of temperature and pressure from liquid composition on the partitioning of Ni between olivine and liquid, [Formula: see text]. Experiments were performed from 1300 to 160...