English translation for "火山弧"
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- volcanic arc
Related Translations:
火山学: [地质学] volcanology◇火山学家 volcanist; volcanologist 火山幕: volcanic episodevolcanic phase
- Example Sentences:
| 1. | Their structural environment is mainly volcanic arc 其构造环境主要为火山弧地区。 | | 2. | Study on petrology , geochemistry and isotope chronology shows that the metallogenesis is closely related to granite - porphyry , which belongs to the early ordovician adakite formed in volcanic arc 花岗斑岩与成矿作用关系密切,从岩石学、岩石化学、年龄学等方面对花岗斑岩进行了研究,认为花岗斑岩属于志留世早期形成于火山弧环境的埃达克岩。 | | 3. | At last they have being formed the tectonic framework , after breakup of the volcanic island arcs , subduction , decline and fall of the back - arc basins and arc - microcontinent and arc - arc collision had finished 经过了长期而复杂的微大陆和火山弧的裂解、弧后盆地的消减衰亡及弧陆和弧弧碰撞等构造演化,才最终形成今天所见到的这种构造样式。 | | 4. | And apatite . by these analyses and comparison with general granite both in china and the world and with the granite in other au or cu belt in china , the characteristics of the granite in this area are concluded as follows . it belongs to magnetite - i or syntectic granite and has crust - mantle mixed characteristics ; it was formed mainly by crystallization differentiation of melting magma and multiphase varied intrusion ; the degree of differentiation evolvement is not high ; the granite and its enclaves p . re congenetic ; the range of temperature is about 500 - 700 , the range of pressure is about 2 . 50 gpa - 4 . 35 gpa , and the range of oxygen fugacity ( lg fo2 ) is - 15 . 53 - - 14 . 00 ; most granite bodies formed before the collision of plates , and few formed after the collision of plates 通过对测试数据的分析与综合研究,并同中国和世界一般花岗岩类以及中国主要金、铜成矿岩体的花岗岩类进行对比,得出本区花岗岩类岩石具有以下特征:属磁铁矿-型或同熔型花岗岩,其岩浆物质具壳幔混源特征:主要由熔融态岩浆经结晶分异作用,通过多期变速上侵而形成;其分异演化程度较低;寄主岩基和包体具有同源性;岩石的形成温度范围约为500 - 700 ,压力大约为2 . 50gpa - 4 . 35gpa ,氧逸度值1gfo _ 2为- 15 . 53 ? 14 . 00 ;该岩带主要形成于板块碰撞前消减的活动板块边缘期,为燕山至喜马拉雅早期的大陆边缘火山弧环境的产物。 |
- Similar Words:
- "火山轰呜" English translation, "火山红" English translation, "火山红层型铜矿" English translation, "火山后期活动" English translation, "火山湖" English translation, "火山化学" English translation, "火山灰" English translation, "火山灰层" English translation, "火山灰尘" English translation, "火山灰成胶状粘土" English translation
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