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east kunlun mts
相关语句
  东昆仑山
     According to the analyses on the loess lithology, graunlarity, heavy minerals and paleomagnetism, also based on the research results of the periglacial phenomena, the climatic fluctuation in the East—Kunlun Mts.
     根据黄土岩性、粒度、重矿物及其地磁分析,结合本区内的古冻土研究结果,东昆仑山约24kaB.P.
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  相似匹配句对
     Hooror in The East
     [战栗东方]
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     The sickmen of East
     本文对“东亚病夫”的由来、病根及其启迪作粗浅论述。
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     Qilian and Kunlun
     祁连与昆仑
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     DCOM and MTS.
     它继承并发展了COM、DCOM和MTS的功能和特点。
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     Where were Kunlun Slaves from?
     这些昆仑奴来自何方?
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The Wanbaogou Group of Upper Proterozoic to Cambrian age is located in southern East Kunlun Mts, around Nachitai on the Qinghai—Tibet Highway. The volcanic sequence lies in the midlower part of the Group with a thickness of greater than 1500m. The rocks comprise mainly basaltic lava, accompanied by some basic tuff. The components of the volcanics are relatively homogeneous, suggesting poor differenciation. Vesicular and pillow structures can be observed in the lavas, but they are not widely developed;...

The Wanbaogou Group of Upper Proterozoic to Cambrian age is located in southern East Kunlun Mts, around Nachitai on the Qinghai—Tibet Highway. The volcanic sequence lies in the midlower part of the Group with a thickness of greater than 1500m. The rocks comprise mainly basaltic lava, accompanied by some basic tuff. The components of the volcanics are relatively homogeneous, suggesting poor differenciation. Vesicular and pillow structures can be observed in the lavas, but they are not widely developed; lava breccias and carbonate interlayers are present in the tuffs. The pyroxenes were replaced by amphibole and chlorite, while the plagioclases had suffered from zoisitization and argillization. In addition, there are also some cases of silisification and carbonatization.The rocks are characterized by low content of SiO_2 (less than 50%) and high content of TiO_2(about 3%) ; and low MgO(generally 4—5%)and high TFeO (about 14%)contents. K_2O +Na_2O. and P_2O_5. contents are 2—4% and less than 0.4% respectively. The trace element distribution is low in Cr and Ni (69—113ppm and 23—71ppm respectively), corresponding to the low content of MgO, while the high V(256—383 ppm) and Zr (116—289ppm) contents are consistent with that of TFeO. The REE normalized values show a LREE-rich pattern, and ~(87)Sr/~(86)Sr values range between 0. 702—0. 705.The above data suggest that this volcanic suite was derived from tholeiite of deep origin and formed in an intrapolate environment. It is somewhat subalkaline in character and exhibits some features of oceanic island-type basalt, indicating in the early history of the evolution of the East Kunlun crust there existed a significant extensional period as the initial stage of the formation of the East Kunlun eugeosyncline.

本文通过对基性火山岩样品的综合研究,论述了该岩组的岩石学特征;着重阐述了稀土元素、痕量元素含量变化特征;论证了万宝沟群中的基性火山岩的成因。指出万宝沟基性火山岩既有别于大洋正常拉斑玄武岩,也不同于大陆拉斑玄武岩,而是来源于上地幔,属于分异作用不发育、略偏碱性、于浅-中海环境中形成的洋岛型拉斑玄武岩。

The high—altitude loess deposit which distributes on the nortern slope of EastKunlun Mts. and develops since about24 kaB. P. provides as a continuous climate change records since the late pleistocene. According to the analyses on the loess lithology, graunlarity, heavy minerals and paleomagnetism, also based on the research results of the periglacial phenomena, the climatic fluctuation in the EastKunlun Mts. since about 24 kaB. P. can be divided into the following periods:...

The high—altitude loess deposit which distributes on the nortern slope of EastKunlun Mts. and develops since about24 kaB. P. provides as a continuous climate change records since the late pleistocene. According to the analyses on the loess lithology, graunlarity, heavy minerals and paleomagnetism, also based on the research results of the periglacial phenomena, the climatic fluctuation in the EastKunlun Mts. since about 24 kaB. P. can be divided into the following periods: the cold period in late pleistocene(24-10.7 kaB. P.); the transitional warm period in early Holoeene (10.7—8.8—6.0kaB. P.); the warm—arid period in the middle Holocene (6.0—4.5 kaB. P.);the late Holocene period(since 4. 5 kaB. P.)and etc.

分布于东昆仑山北坡、发育于距今约24kaB.P.以来的高海拔黄土提供了东昆仑山区晚更新世以来气候变化的完整记录。根据黄土岩性、粒度、重矿物及其地磁分析,结合本区内的古冻土研究结果,东昆仑山约24kaB.P.以来经历了晚更新世末寒冷期(24~10.7kaB.P.);早全新世转暖期(10.7~8.8kaB.P.);中全新世暖湿期(8.8~6.0kaB.P.);中全新世暖干期(6.0~4.5kaB.P.);全新世后期(4.5kaB.P.)以来等气候演化阶段。

The Deerni Cu-deposit is situated in the north area of Qinghai-Tibet Plateau andbelongs to Golog Tibetan Autonomous Prefecture of Qinghai Province, China. It is a largecomposite deposit with multiple profitable elements. The copper, cobalt, zinc and sulfur ofthis deposit can be respectively considered as an independent deposit and the associated el-ments such as gold, silver, selenium and so on are also quite abundant. The East Kunlun Mts spans in the centre of Qinghai Province. Its east extending...

The Deerni Cu-deposit is situated in the north area of Qinghai-Tibet Plateau andbelongs to Golog Tibetan Autonomous Prefecture of Qinghai Province, China. It is a largecomposite deposit with multiple profitable elements. The copper, cobalt, zinc and sulfur ofthis deposit can be respectively considered as an independent deposit and the associated el-ments such as gold, silver, selenium and so on are also quite abundant. The East Kunlun Mts spans in the centre of Qinghai Province. Its east extending part iscalled as Anyemaqen Mts and classified as Anyemaqen orogenic belt in tectonic unit. To thenorth the orogenic belt is bounded by a deep fault zone, south of which the Jishishan Ultraba-sic rock Zone is extended discontinuously several hundred kilometers. The Deerni Cu-depositoccurre in the ultrabasic rock of the middle zone. The ultrabasic rock is composed mainly ofpyrolite and less of dunite and peridotite. Most of which has been altered into serpentinite.The rock body contacts directly with the Upper Permian sandstone-slate bed by faults. The 4 main orebodies in the deposit are extending more than or near one kilometers, andtens of meters in general thickness and 74m in maximum (the thickness gone through bybore). The orebodies are clear from the host rock (ultrabasic rock) and often surrounded bya ring of serpentine schist. The ores are typical massive sulfide ore dominated by block struc-ture. The ores consist of main pyrite, pyrrhotite, chalcopyrite, sphalerite and magnetite,and low picotite, marcasite, cobalt pentlandite and so on. In the deposit copper, zinc, sulfurand cobalt are very high in content but less nickel. It is common for cobalt to occur as iso-morph in pyrite, but little individual minerals. Besides breccia structure, recrystallized pyriteor banded structures and sometimes augen structure can be seen in the ore because of themetamorphism of tectonic compression. There are some different ideas about the origin of the deposit for a long time. Recentlywith the geological prospect progress, some new materials are accumulated and summarizedas following six aspects. (1) The ultrabasic rocks in this area are metamorphic peridotite,the residual solid ofremelting upper mantle, and emplaced to the upper crust from the deep. (2) The age of the ultrabasic rock is much older than that of the host rock. Qinghai Geo-logical Prospect Bureau of Nonferrous Metal sampled the ultrabasic rock in 1990-1991 andgot the age of 1216 Ma (Sm-Nd measurement). But the age of mineralized serpentinite of thedeposit is only 7. 56 Ma(author, 1995,by Sm-Nd measurement). It may be caused by intense alteration. (3) The age of the ore is similar to that of the ultrabasic. In 1995 we sampled the blockCu-bearing massive pyrite both in 1 and 5 orebody and got respectively of the ages 943 Maand 1025 Ma (Sm-Nd measurement). The result reflects the close relationship betweem theore and ultrabasic rock. (4) A group results of sulfur isotope(δS~(34) between + 6 and -6)similar to the meteoritesulfur show that the sulfur source is from the deep, homogeneous and affected little by seawater and hydrothermal solution. (5) The plane trend analysis of the main compositions --copper, cobalt, zine and sul-fur--, especially copper and sulfur,are quite concordant in isoline shape,so that these four el-ments have a close relationship in between and a same source. The sectional trend analysis ofthese four elements shows that the orebody has no diffusion metasomatism to the host rock--ultrabasic rock. (6) A few chromhernite in the ore also reveals the close relationship between ore and ul-trabasic rock. In summary the deposit has a relation to the ultrabasic rock in origin. It was formed inupper mantle and emplaced in shallow crust. The original type of the deposit could be namedtemporarily as a deep liquation-tectonic emplacement deposit. In comparison with other com-mon massive sulfide deposit, the deposit is very particular, therefore, a new name--Deernitype --has been suggested.

长期以来对德尔尼铜矿的成因存在着不同认识。从矿石组成和结构、构造来看,应属典型的块状硫化物矿石,矿床亦应属于含铜黄铁矿型矿床。但从其地质产状来看又与一般的黄铁矿型矿床大不相同,与一般的岩浆熔离铜镍硫化物矿床也有较多差异。这就是本矿床类型独特之处。近年来通过工作又取得一些新资料,特别是超基性岩和矿石的同位素年龄数据。本文在综合新老资料基础上,提出新看法,认为该矿床形成于上地幔,再就位于地壳浅部。其成因类型暂定为:“深部熔离—构造侵位矿床”。鉴于本矿床与一般块状硫化物矿床相比有其独特性,建议命名为“德尔尼型”。

 
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