ophiolite formation 中文意思是什麼

ophiolite formation 解釋
蛇綠巖建造
  • ophiolite : 蛇綠巖 亦稱à礫蛇紋石
  • formation : n. 1. 構成,形成;設立;編制。2. 組織,構造;形態;形成物,構造物;【軍事】編隊,隊形;兵團。3. 【地質學;地理學】層;組; 【生物學】社區;(植物)群系。adj. -al
  1. The results of combined internal mineral separates and whole - rock sm - nd isochron age for gabbro dikes from : luobusha, angren and xiubugabu in yarlung zangpo ophilite zone are 177ma, 166ma and 173ma respectively. the 4lar - 39ar step heating spectra of rikangba ophiolite suggest that its formation age is also isoma. it indicates that there was a stronger regionally inagmatism during middle - early jurassic, and the time of i75ma was the main period of the magmatic event of yarlung zangpo ophilite

    對鄔郁盆地嘎扎村組火山巖剖面的年代學研究表明,該區后碰撞期火山巖的~ ( 40 ) ar - ~ ( 39 ) ar年齡為12 ? 14ma ,侵入其中的花崗巖脈的~ ( 40 ) ar - ~ ( 39 ) ar年齡為10 . 84ma ,與岡底斯西段前人研究資料對比,認為岡底斯帶后碰撞火山巖時代有自西向東逐漸年輕的趨勢。
  2. The author suggests that for those kinds of samples like ophiolite which formed in the underwater environment and had very low potassium content, it should be better to determine their formation age by the sm - nd method as it is less sensitive to alteration. however, the step heating 40ar - 39ar spectra could often reflect the influence of later geological events on isotope system

    認為對蛇綠巖這類形成於水下環境,含鉀極低的樣品,其巖體的形成年齡宜選用對蝕變影響反應不明顯的sm - nd方法測定;但階段升溫~ (
  3. We deduce that it is a relic old crust that was brought upwards during the formation of neo - tethyan ophiolite. the step heating 40ar - ' 9ar spectra show that during 100ma, luobusha ophiolite suffered intensely alternation, which affected distinctly the k - ar system ; during 771ma some basalt formed in the country rock of xiubugabu ophiolite ; during 55ma, the pillow basalt of rikangba ophiolite affected by a strong thermal event ; all the variety of ages illustrates possible impacts of the subduction - collision between india and eurasia. through dissecting mainly the gabbro of luobusa ophiolite and studying the 40ar / 39ar

    ~ ( 40 ) ar ~ ( 39 ) ar階段升溫年齡圖譜顯示, 100ma左右羅布莎巖體經歷了較強的後期蝕變作用,對其k ? ar體系造成明顯影響; 77 1ma休古嘎布巖體圍巖中形成玄武質火山集塊巖; 55ma日康巴巖體巖石枕狀玄武巖受到較強熱事件影響;這些~ ( 40 ) ar - ~ ( 39 ) ar年齡上的變化顯示了印度板塊與歐亞板塊俯沖?碰撞對該區的強烈影響。
  4. The authors put forward that daba - xiugugabu ophiolite belt originated from an ancient oceanic crust fragment of india continental northern marginal ocean basin, that was approximately synchronous with the formation and evolution period of the neo - tethys ocean

    筆者提出該區蛇綠巖來源於印度大陸北緣洋盆的洋殼碎片,這個陸緣洋盆與新特提斯洋主體的形成和演化準同步。
  5. In the light of rock association, origin, age, deformation and metamorphism, disintegration and collage, migration and displacement, the " litang ophiolite group " is redefined as the " litang ophiolitic melange group ", which may be redivided into two formation complexes, i. e. the kar ophiolite formation and waneng ophiolite formation and five types of exotic blocks composed of clastics and marbles

    按結合帶內巖塊的不同組分、不同來源、不同時代、不同變形變質程度的不同,對各類巖塊進行四維裂解拼合復原后劃分為兩個巖組(卡爾蛇綠巖組、瓦能蛇綠巖組)及碎屑巖、大理巖等組成的5類外來巖塊。
分享友人