1) high pressure and ultrahigh pressure metamorphism
高压超高压变质作用
1.
Fluid released during the high pressure and ultrahigh pressure metamorphism plays an important role in the evolution of subducted slab and may connect directly with igneous activity in island arcs.
在高压超高压变质作用过程中所释放的流体对俯冲板块的演化起着重要作用,与岛弧岩浆活动有着直接联系。
2) UHP metamorphism
超高压变质作用
1.
The fluid-rock interaction of UHP metamorphism:Oxygen isotopic study of the core rocks from the main hole (0~2050 m) of the Chinese Continental Scientific Drilling Project;
超高压变质作用过程中的流体岩石相互作用——中国大陆科学钻探工程主孔(0~2050m)岩心的氧同位素证据
3) Ultrahigh-pressure metamorphism
超高压变质作用
1.
Coesite is an important mineral often used to judge the ultrahigh-pressure metamorphism.
柯石英是石英的高压同质多相变体,是超高压变质作用的产物,它是识别超高压变质作用的重要标志矿物。
2.
Generally, the end members of ompacites are Jd = 20 mol%- 52 mol% The garnet composition, mineral assemblage of eclogite facies and oriented quartz exsoluiton in Na-clinopyroxene indicate the eclogites here underwent a Triassic ultrahigh-pressure metamorphism.
石榴子石成分特征及钠质单斜辉石中石英针状出溶体的出现表明,本区榴辉岩早期可能经历过超高压变质作用,且至少经历了3个变质阶段,即:①榴辉岩相峰期变质阶段,主要矿物共生组合为石榴子石+绿辉石+金红石±蓝晶石+石英(或柯石英假象?),p≥2。
3.
Many references show that the water is indispensable to the ultrahigh-pressure metamorphism.
大量资料表明水参与了超高压变质作用过程 。
4) Ultra-high pressure metamorphism
超高压变质作用
1.
This paper reviews progress and problems of ultra-high pressure metamor-phism on the basis of the mineralogy,P-T-t path and mechanisms of uplift of ultra- highpressure metamorphic terrain,Mineralogical study of ultra-high pressure metamorphismwill be of interest in the future.
本文从超高压变质作用的矿物学、P-T-t轨迹和超高压地体抬升、保存机制三个方面总结了近年来超高压变质作用研究所取得的重要进展和存在的问题。
5) UHPM
超高压变质作用
1.
A 705-m-deep hole (CCSD-PP3) was drilled on the Gangshang garnet peridotite body in the Sulu UHPM belt, of northern Jiangsu Province.
榴辉岩石榴石中发现柯石英假象,表明岩石经历超高压变质作用。
2.
Extraneous ~(40)Ar within UHPM phengite:Interpretation for the ~(40)Ar-~(39)Ar results of phengites by laser stepwise heating from Bixiling eclogite,southern Dabieshan;
Reg-Ⅰ对应的年龄为436~463Ma,与榴辉岩石榴子石原生流体包裹体年龄基本一致,可能代表了榴辉岩超高压变质作用峰期的年龄;Reg-Ⅲ对应的年龄为541~659Ma,最高年龄值小于02BX030MS的年龄,表明超高压变质作用使多硅白云母产生了不同程度的放射成因40Ar部分丢失。
补充资料:超高压
超高压
一般指高于一万大气压的压强。在超高压下,物质的物理化学性质发生显著变化。利用超高压和高温可使物质结构改变,或者合成自然界尚未发现过的物质,如固体氮和性质极硬的氮化硼等。
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