搜索结果: 1-15 共查到“理学 olivine”相关记录19条 . 查询时间(0.064 秒)
Evidence for the solar wind in lunar magmas: A study of slowly cooled samples of the Apollo 12 olivine basalt suite
hydrogen isotopes melt inclusions mare basalts SIMS lunar olivine
2017/4/10
While it is now recognized that the Moon has indigenous water and volatiles, their total abundances are unclear, with
current literature estimates ranging from nearly absent to Earth-like levels. Sim...
Morphology and surface features of olivine in kimberlite: implications for ascent processes
Morphology surface features olivine kimberlite ascent processes
2015/1/6
Most kimberlite rocks contain large proportions of ellipsoidal-shaped xenocrystic olivine grains that are derived mainly from disaggregation of peridotite. Here, we describe the shapes, sizes and surf...
Experimental deformation and recrystallization of olivine – processes and timescales of damage healing during postseismic relaxation at mantle depths
Experimental deformation recrystallization of olivine
2015/1/5
. Experiments comprising sequences of deformation (at 300 or 600◦C) and annealing at varying temperature (700 to 1100◦C), time (up to 144 h) and stress (up
to 1.5 GPa) were carried out in...
Mineral magnetism of dusty olivine: A credible recorder of pre-accretionary remanence
chondrules dusty olivine electron holography first-order reversal curves magnetic properties transmission electron microscopy
2014/5/20
The magnetic properties of olivine-hosted Fe-Ni particles have been studied to assess the potential of “dusty olivine” to retain a pre-accretionary remanence in chondritic meteorites. Both body-center...
What olivine,the neglected mineral,tells us about kimberlite petrogenesis
olivine neglected mineral kimberlite petrogenesis
2009/10/22
We report here the results of a petrographic and geochemical study of remarkably well-preserved kimberlites from the Kangamiut region in Greenland. The samples contain between 5 and 45% of olivine in ...
Combining [3He] cosmogenic dating with U–Th/He eruption ages using olivine in basalt
U–Th/He cosmogenic helium Snake River Basalts Idaho olivine
2014/4/8
This paper presents new U–Th/He crystallization and 3He exposure ages on olivine for a suite of basalt samples from the Snake River Plain, Idaho. The results provide the first demonstration that U–Th/...
What olivine, the neglected mineral, tells us about kimberlite petrogenesis
What olivine the neglected mineral kimberlite petrogenesis
2010/9/28
We report here the results of a petrographic and geochemical study of remarkably well-preserved kimberlites from the Kangamiut region in Greenland. The samples contain between 5 and 45% of olivine in ...
Shock-compressed MgSiO3 glass, enstatite, olivine, and quartz: Optical emission, temperatures, and melting
enstatite olivine quartz
2014/4/8
Optical emission of MgSiO3 glass, enstatite, olivine, and quartz under shock wave
compression was investigated with optical pyrometry at discrete wavelengths ranging
from visible to near infrared. W...
Temperature dependence of Fe,Mg partitioning in Acapulco olivine
Temperature dependence Fe Mg partitioning Acapulco olivine
2012/4/1
The temperature dependence of the intracrystalline Fe,Mg partitioning (K ) in two olivine crys-
tals (Fa) separated from the Acapulco meteorite was determined by single-crystal X-ray structure
analy...
Magnetite lamellae in olivine and clinohumite from Dabie UHP ultramafic rocks, central China
Ultrahigh-pressure rocks olivine and clinohumite central China
2012/3/31
Ultrahigh-pressure (UHP) minerals of the Maowu mafic-ultramafic complex in the Dabieshan,
east-central China exhibit many exsolution textures. Magnetite lamellae are common in olivines and
Ti clinoh...
Systematics of Ni and Co in olivine from planetary melt systems: Lunar mare basalts
planetary melt systems:Luna rmare basalts Co Ni
2012/3/31
ThesystematicsofCoandNiinolivinefromsixApollo12olivinebasaltswerestudied
bySIMStechniquesandcorrelatedwithmajorandminorelementdataobtainedwiththe
electronmicroprobe.Ourresults,togetherwithpreviousst...
The effect of trace elements on the olivine-wadsleyite transformation
trace elements olivine-wadsleyite transformation
2012/4/1
Multianvil experiments were conducted at 1400 to 1600 8 C on olivine and peridotite starting compositions to determine the partitioning of Ti, Al, Cr, Ni, Ca, and Na between coexisting olivine and wad...
Solid-solid reactions mediated by a gas phase: An experimental study of reaction progress and the role of surfaces in the system olivine+iron metal
Solid-solid reactions olivine+iron metal
2012/4/1
The intergranular fluid involved in solid-solid reactions is tacitly assumed to be a melt or a (C-O-H-S-Cl-F)-bearing phase. We have studied the system olivine 1metal using dif-fusion couple experimen...
The systematics of Cr3+ and Cr2+ partitioning between olivine and liquid in the presence of spinel
Cr3+ Cr2+ spinel
2012/3/31
The partitioning behavior of Cr into olivine in basaltic systems has been parameterized and can now be modeled over a wide range of redox conditions and liquid compositions.The Cr21/Cr31 in spinel-sat...
Distribution of cations and vacancies and the structure of defects in oxidized intermediate olivine by atomic-resolution TEM and image simulation
Distribution of cations vacancies atomic-resolution TEM image simulation
2012/4/1
The Fe, Mg, and vacancy distributions in oxidized olivine of intermediate composition and the crystal structures of associated planar defects were examined by a combination of atomic-resolution transm...