The Genesis and Evolution of Alpine-Type Ultrabasic Rocks in Western Junggar, Xinjiang

来源 :Acta Geologica Sinica(English Edition) | 被引量 : 0次 | 上传用户:bg8nij
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The alpine-type ultrabasic rocks of the studied area have undergone plastic deformation under a temperature about 800--1200℃, a pressure about 0.9--1.68 GPa and differential stress of 0.2--0.35 GPa in relatively dry conditions, forming ultrabasie mylonite with porphyroclastic and mylonitic textures, Primary crystallized silicate melt inclusions and melt-fluid inclusions are discovered in porphyroclastic minerals and ore-forming chrome spinel. These rocks are formed under relatively stable physico-chemical conditions through liquid immiscibility of silicate melts, at 1200°-- 1300° and 1.1--1.38 GPa, equivalent to a depth of 40--50 km. No inclusion has been found in recrystallized secondary olivine and pyroxene, indicating that the plastic deformation happened after the formation of the rocks. The alpine-type ultrabasic rocks of the studied area have undergone plastic deformation under a temperature of 800 - 1200 ° C, a pressure of 0.9-1.68 GPa and differential stress of 0.2 - 0.35 GPa in relatively dry conditions, forming ultrabasie mylonite with porphyroclastic and mylonitic textures, Primary crystallized silicate melt inclusions and melt-fluid inclusions are discovered in porphyroclastic minerals and ore-forming chrome spinels. These rocks are formed under relatively stable physico-chemical conditions through liquid immiscibility of silicate melts at 1200 ° - 1300 ° and 1.1--1.38 GPa, equivalent to a depth of 40 - 50 km. No inclusion has been found in recrystallized secondary olivine and pyroxene, indicating that the plastic deformation happened after the formation of the rocks.
其他文献
经过几年的试验,瑞典生产工程研究会(IVF)已经总结出改善锻造车间环境的各项措施.一个由工厂、管理部门、IVF和商业协会的代表组成的设计小组在瑞典一家锻造工厂进行了这些
本文对高效率磨削的机理和提高磨削效率的途径进行了必要的理论分析;对各种砂轮的磨削性能、砂轮成型方法和金刚石滚轮的制造工艺与修整条件进行了试验研究,得出了各种因素对
本文是从研究气体射流在液态介质中运动的一般规律出发,通过理论和实验研究证明,在目前埋入式吹氧炼钢供氧压力范围内,喷射到钢液中的氧气射流只能形成囊状流,射流不可能分裂
一、前言“情”与“序”客观地存在于我们的课堂教学之中,“情”通过横向交叉影响课堂教学各要素的活动及其相互关系;“序”通过纵向展开来保证课堂教学顺利而高效的运作。由
所谓飞刀,是指定式阶段所有变着、骗着、强手、无理手的总称。围棋大师曾经说过:“棋盘的角部有魔性。”在定式演变过程中,随着局面的不同,对局者可以选择不同的定式。而在一
最近,“一封带有70个错别字的公益联名信”在微博上引起了广泛关注,信中所有带“氵”或“冫”的字都去掉了偏旁。这是方太发起的一个“给你我的水”公益活动,号召大家把名字
我厂的方孔冷冲模是用T8钢制造,如图1,生产中常发生脆断,端面深层掉块和浅层剥落,使用寿命很短。为了提高冷冲模的断裂韧性和强度,我们参照文献对T8钢方孔冷冲模进行了强韧
应我国学术界邀请,国际隔震学会主席、新西兰国家科学与工业试验部总工程师斯金纳(R.I.Skinner)博士偕夫人于今年四月十九日至五月七日对我国进行了为期十九天的访问。斯金
The synthesis of the lanthanide chelates of α′-(trifluoromethyl)polyfluoroalkyl β-dike-tones Ln {CF_3CF_2 [CF_2OCF(CF_2)]_n COCHCOC(CH_3)_3}_3[1,n=1;Ln=Eu(1
当今世界,到处充斥着犯罪的气息。新闻节目讲述着各种社会暴力,脱口秀节目中也尽是些影响了一代人的词语:犯罪、袭击、强奸、恐怖、暴力与生存等等。 In today’s world, th