搜索结果: 1-15 共查到“地质学 9.0 GPa”相关记录18条 . 查询时间(0.193 秒)
利用多顶砧压机, 以青藏高原北喜马拉雅构造带的天然斜长角闪岩为样品, 在2.0 GPa, 800~1000℃条件下进行了两个系列的块状样品脱水部分熔融实验: (1) 保持压力p = 2.0 GPa, 加热时间t = 12 h不变, 改变温度(800℃~1000℃)的实验; (2) 保持压力p = 2.0 GPa, 温度T = 850℃不变, 改变加热时间(12~200 h)的实验. 结果表明, 2...
岩相学和矿物化学研究表明, 阿尔金英格利萨依一带片麻状(含)钾长石榴辉石岩中的粗粒石榴子石出溶单斜辉石和金红石. 统计石榴子石出溶的单斜辉石的面积比最高>5%, 重建出溶前该石榴子石(Grt1)单位分子式中的Si值高达3.061, 为含Na的超Si-石榴石或含有majorite分子的石榴子石. 依据石榴子石含辉石摩尔体积压力计和majoritic-石榴子石 Si-(Al+Cr)压力计估算其峰期变质...
Shock compression of liquid silicates to 125 GPa: The anorthite‐diopside join
Shock compression The anorthite‐diopside join
2014/4/8
We determined the equation of state (EOS) of three silicate liquid compositions by
shock compression of preheated samples up to 127 GPa. Diopside (Di; Ca2Mg2SiO6)
at 1773 K, anorthite (An; CaAl2Si2O...
Direct shock wave loading of Stishovite to 235 GPa: Implications for perovskite stability relative to an oxide assemblage at lower mantle conditions
perovskite stability ower mantle conditions Direct shock
2014/4/8
Pure stishovite and coesite samples with zero porosity
and dimensions appropriate for planar shock wave
experiments have been synthesized with multi-anvil highpressure techniques. The equation of st...
In situ X-ray diffraction study of enstatite up to 12 GPa and 1473 K and equations of state
X-ray diffraction study of enstatite 12 GPa 1473 K equations of state
2012/4/1
Crystal structures and phase transitions of enstatite (MgSiO ) were studied by in situ X-ray dif-fraction experiments using synchrotron radiation and a multi-anvil high-pressure apparatus at pres-/c t...
Elastic wave velocities of Mg3Al2Si3O12-pyrope garnet to 10 Gpa
Mg3Al2Si3O12 10 Gpa Elastic waveve locities
2012/3/30
ElasticwavevelocitiesofMg Al Si O pyropegarnetweremeasuredto10GPaat
3 2 3 12
ambienttemperature,usingultrasonicinterferometryina1000tonsplit-cylinder,multi-
anvilapparatus(USCA-1000).Thesampleusedi...
Subsolidus and melting experiments of a K-rich basaltic composition to 27 GPa: Implication for the behavior of potassium in the mantle
K-rich basaltic composition 27GPa Subsolidus and melting experiments
2012/3/30
SubsolidusandmeltingexperimentsofaK-richbasalticcompositionhavebeenper-
2wt%)at6¤C12.5GPaandabove22.5GPa,respectively.Bothpyroxeneandgarnetma
actasmainreservoirsforKinthemantle.Sanidine(KAlSi
O )or...
57Fe nuclear forward scattering of synchrotron radiation in hedenbergite CaFeSi2O6 at hydrostatic pressures up to 68 GPa
nuclear forward scattering CaFeSi2O6 hydrostatic pressures 68 GPa
2012/3/31
The Fenuclearforwardscattering(NFS)ofsynchrotronradiationandtheuseofdia-
mondanvilswithheliumaspressuremediumallowedstudyoftheelectronicstateofFe
inthechainsilicatehedenbergiteCaFeSi O atpressuresup...
Composition, stability, and structure of a new member of the aenigmatite group, Na2Mg4+xFe3+2-2xSi6+xO20, synthesized at 13–14 GPa
Na2Mg4+xFe3+2-2xSi6+xO20 aenigmatite group 13-14GPa
2012/3/30
Anewphaseisostructuralwiththemineralsoftheaenigmatitegroup3Na
Mg FeSi O with x 0.25 0.5wassynthesizedat13¤C14GPawithasplit
2 4x 6x 2022x
sphereanvilapparatus(USSA-2000).Thestructure(for x 0.4)wasde...
Melting experiments in the systems CaO-MgO-Al2O3-SiO2 and MgO-SiO2 at 3 to 15 GPa
Melting experiments CaO-MgO-Al2O3-SiO2 MgO-SiO2
2012/3/31
The results of multi-anvil melting experiments are reported for a range of compositions in the system CaO-MgO-Al2O3-SiO2. The liquidus crystallization fields for forsterite, or-thopyroxene, clinopyrox...
Sound velocities of polycrystalline MgSiO3 -orthopyroxene to 10 GPa at room temperature
Sound velocities polycrystalline MgSiO3 -orthopyroxene temperature
2012/3/31
A polycrystalline sample of MgSiO3-orthopyroxene was hot pressed at a pressure of 4 GPa and temperature of 975 8 C in a multi-anvil apparatus. The recovered specimen has a bulk density within 1% of th...
Experimental study of the system phlogopite-diopside from 3.5 to 17 GPa
Experimental study system phlogopite-diopside 3.5 to 17 GPa
2012/4/6
Onthebasisofbothnaturalsamplesandexperimentalstudies,clinopyroxeneisapo-tentialreservoirforpotassiumintheEarth!flsmantle.TheamountofKpartitioningint
clinopyroxenedependsonthephaseassemblagepresent,th...
Reaction between magnesiowüstite of lower mantle composition and core-forming Fe-Ni alloy at 1-40 Gpa
Reaction magnesiowüstite lower mantle composition core-forming Fe-Ni alloy 1-40 Gpa
2012/4/5
OneclassofmodelsfortheearlyhistoryoftheEarthrequiresthepresent-dayinventory
ofsiderophileelementsinthemantletohavebeenestablishedbyequilibriumpartitioning
betweencore-formingmetalandmantlemineralsat...
Single-crystal compression and crystal structure of clinopyroxene up to 10 GPa
Single-crystal compression crystal structure of clinopyroxene 10 GPa
2012/4/1
Thehydrostaticcompressionofsyntheticsinglecrystalsofdiopside,CaMgSi O ,and
hedenbergite,CaFeSi
O ,wasstudiedat33pressuresupto10GPabyX-raydiffraction.
,intensitydataforhedenbergitewerecollectedat12p...
Melting experiments on komatiite analog compositions at 5 GPa
Melting experiments komatiite analog compositions 5 GPa
2012/4/5
Theresultsofmulti-anvilmeltingexperimentsarereportedforawiderangeofkomatiite
analogmixeswithcompositionsinthesystemCaO-MgO-FeO-FeO Fe -Al O -SiO at
5GPa(CMASandCMFAS Fe ).Theliquiduscrystallization?...