Well-documented Lu-Hf isotope data from the oceanic basalts show that,the starting area of magma melting for the MORBs derived from the DMM component would be in the the depth of garnet peridotite,i.e.at the depth of 80―90 km instead of less than 60 km,which is at the depth of spinel peridotite as proposed early.The HIMU component,which is characterized by its high rediogenic lead,is refered as a special mantle component differentiated at some time in geological history from the lower mantle.A correlation study of Hf-Nd isotope between the chondrite and oceanic basalts implies that no isolated primitive mantle might have remained.

大量的大洋玄武巖Lu-Hf同位素研究表明：具虧損地幔端元來源的洋中脊玄武巖巖漿部分熔融的初熔區(qū)位于石榴石穩(wěn)定場深度色爱看网站，即深度為80-90 km的石榴石二輝橄欖巖地幔，而不是原來所認為的尖晶石二輝橄欖巖區(qū)(深度小于60 km)欧美精品可乐视频；以高放射成因Pb為特征的高U地幔端元應代表了下地幔物質在某一特定時期發(fā)生分異作用的結果超碰在线免费视；球粒隕石與大洋玄武巖Hf同位素對比研究表明，沒有原始地幔物質能保留至今的跡象欧美三级A片视频。

The pillow lava, with affinity of MORB, plots in the field of MORB and IAT, suggesting that the Yushigou ophiolite formed in a tectonic setting like the Middle Ocean Ridge and then were changed by volcanic arc magmatism.

地幔橄欖巖主要是方輝橄欖巖日本一片色，其主要氧化物成分較為單一，具LREE富集看美女免费操逼逼视频、Eu虧損的U形REE配分模式又粗又大黄色艹逼，虧損強不相容元素；枕狀熔巖具典型MORB特征德国三级片网站，在構造判別圖解上位于MORB和IAT區(qū)域国产黄色亚洲，指示蛇綠巖可能形成于類似于洋中脊的構造環(huán)境，并受到火山弧巖漿作用的影響欧美老熟妇性交杂。

The existence of MORB type tholeiite depleted in LREE(TH1) demonstrates that some pieces of ocean crust may be involved there.

其中輕稀土虧損的洋中脊型拉斑玄武巖（TH1）的存在顯示部分洋殼殘片的可能卷入avttyazhou。

However, relating to investigate the modes, courses and characteristics of the orogenetic process in Paleozoic and after orogenetic process, the cognitive divergence have still occurred.

通過對新疆北東部地區(qū)不同構造區(qū)帶構造作用的方式、過程和特點的研究欧洲自拍，確定：①南天山榆樹溝高壓麻粒巖地體的正變質原巖是一個基本完整的蛇綠巖套亚洲中文字幕超碰97，其經歷了俯沖至下地殼的高壓麻粒巖相、構造抬升至深地殼麻粒巖相以及快速構造折返至角閃巖相的變質過程99精品视频全部免费观，代表了南天山洋殼俯沖黄色网站免费a、變質、隨后折返的過程亚洲美女A视频，并首次確定了變質過程的PTt軌跡九九手机在线视频；②奧陶紀末期中天山北緣發(fā)生洋盆俯沖美女污视频免费在线观看、地體增生作用，此時薩日達拉地區(qū)處于島弧活動帶欧美性荡视频；中石炭世晚期中天山小型洋盆關閉亚洲精品国产专区91在线，準噶爾地塊與伊犁—中天山板塊斜向對接隨后發(fā)生脆韌性質近水平高溫低速右行走滑剪切；③根據巴音溝地區(qū)不構成蛇綠巖套有效成分的硅質巖具有與活動大陸邊緣密切相關的地球化學特征以及洋中脊玄武巖顯示其巖漿源區(qū)受到消減帶流體交代作用的影響日韩在线视频台湾，結合區(qū)域地質資料国产性交一级，首次提出巴音溝蛇綠巖帶所代表的洋盆古構造環(huán)境為弧后盆地，并于早石炭世至中石炭世末期間爱搞网，經歷了擴張成年人黄片爽爽爽看看看看看看、收縮和閉合過程；④首次在克拉麥里蛇綠混雜巖帶中分解出具有N-MORB鸥美作爱视频、T-MORB與OIB三種不同類型的火山巖巖石組合免费看一级a片网站，反映了洋盆俯沖

The mid-oceanic ridge is accreting boundaries. The normal-fault ruptures indicate the tensive stress state in mid-oceanic regions.

大洋中脊是洋殼增生的地區(qū)，正斷層型的地震破裂顯示了洋中脊系的拉張應力狀態(tài)一本色道久久综合网加勒比。

The difference between MORS- and SSZ-type ophiolites in terms of igneous petrotectonic assemblages is discussed.

探討了識別洋中脊擴張型和洋俯沖帶上面蛇綠巖在火成巖組合上的差別免费黄片子。

Ridges, also called spreading centers, occur where two plates are moving away from each other.

洋中脊，也叫擴展中心柚木在线无码视频精品，出現在兩個板塊相互分離的地方成熟老熟妇高潮XXXXX。

The iron isotopic composition lightly from hydrothermal fluid upwelled into ocean, BIFs are enriched in heavy isotopes of Fe by partial oxidation and precipitation, and iron isotopic composition was homogenous and reequilibrium during different minerals by metamorphism.

提出了地球早期海洋中Fe的循環(huán)模式：洋中脊噴發(fā)富集Fe輕同位素的二價鐵熱液流體，流體進入海洋后經過部分氧化和沉淀的過程使得BIF富集Fe的重同位素精品人人，后期的變質作用使得不同礦物間發(fā)生了Fe的均一化及再平衡

Three classes of MORBs are distinguished in the transform domain: E-MORBs,Primitive N-MORBs and N-MORBs.Two mantle sources are identified in the Siqueiros region.

轉換斷層內的洋中脊玄武巖可分三類：富化的洋脊玄武巖欧美老熟妇又粗又大、原始的正常洋脊玄武巖(PrimitiveN-MORB)和正常洋脊玄武巖。

The data show the following ages: 1894±17 Ma and 1847±59 Ma for garnet pyroxenite of the Tiantangshan Group complex, indicating a Paleoproterozoic age; 1462±28 Ma for the metabasic volcanic rocks of the Yunkai Group complex, indicating the presence of fragments of the Meso- and Neoproterozoic oceanic crust in the Yunkai area; 906±24 Ma for the granitic gneiss intrusion is, which should be the product of the global Grenville collisional orogeny occurring around 1000 Ma BP. In addition, an inherited detrital zircon age of 2702±13 Ma was also obtained, which is the oldest age in the Yunkai area and even in Cathaysia, proving the presence of Neoarchean continental crustal material in Cathaysia.

獲得天堂山巖群石榴輝石巖的形成年齡為1894Ma±17Ma和1847Ma±59Ma欧美a日本在线一，表明其時代為古元古代黄a毛片在线免费观看；云開巖群洋中脊型變質基性火山巖的噴發(fā)年齡為1462Ma±28Ma，證明該地區(qū)存在中元古代的古洋殼殘片91网免费在线观看；獲得花崗質片麻巖的侵入年齡為906Ma±24Ma国产精品iGA视频网办爱搞点激情，應為1000Ma前后發(fā)生的全球性Grenville期造山作用的產物，并獲得2702Ma±13Ma的繼承碎屑鋯石年齡欧美一级性交网站，這是云開地區(qū)乃至華夏古陸目前獲得的最古老年齡被公强A片视频免费看，證明華夏古陸曾存在新太古代陸殼物質。

mid-ocean plateau：洋中海臺

mid-ocean canyon 大洋中央峽谷 | mid-ocean plateau 洋中海臺 | mid-ocean ridge crest 洋中脊峰線

mid-ocean canyon：洋中峽谷

中印度洋脊,印度洋中脊 Mid-Indian Ridge | 洋中峽谷 mid-ocean canyon | 洋脊玄武巖 mid-ocean ridge basalt

mid-ocean rift：大洋中央裂谷,洋中裂谷

洋脊玄武巖 mid-ocean ridge basalt | 大洋中央裂谷,洋中裂谷 mid-ocean rift | 大洋中央裂谷,洋中裂谷 mid-ocean valley

mid-ocean rise：洋中隆

洋中脊|mid-ocean ridge | 洋中隆|mid-ocean rise | 陽起片巖|actinolite schist

MOR system：洋中脊系

MOPF 可動油圖標志 | MOR system 洋中脊系 | mor 粗腐殖質

oxygen partial pressure：氧分壓

洋中脊玄武巖|mid-ocean ridge basalt | 氧分壓|oxygen partial pressure | 氧化膜|oxide film

pyrolite：地幔巖

巖石圈的厚度究竟有多大,很不一樣. 其變化范圍從洋中脊地區(qū)幾乎等于零,到大陸下最深可達 140km. 軟流圈則 是根據地震波傳播的低速層(LVZ)確定的. 根據這一情況,Ringwood 提出了上地幔的地幔巖(Pyrolite)模型,即

epicentre：震央

地圖揭示出大西洋中央的山脊有著奇怪山谷與山脊的水深測繪(bathymetry),[3]中央山谷的地震活動活躍,同時亦是很多地震的震央(epicentre). [4][5]尤因及希森發(fā)現此山脊是一個40000公里長的全球連貫的洋中脊系統的一部分.

mid-Pacific seamounts：中太平洋海底山群,中太平洋海底山脈

中洋脊,大洋中脊 mid-oceanic ridge | 中太平洋隆起,太平洋中隆 mid-Pacific rise | 中太平洋海底山群,中太平洋海底山脈 mid-Pacific seamounts

mid-Pacific rise：中太平洋隆起,太平洋中隆

中洋脊,大洋中脊 mid-oceanic ridge | 中太平洋隆起,太平洋中隆 mid-Pacific rise | 中太平洋海底山群,中太平洋海底山脈 mid-Pacific seamounts