| 1. | The volcanics are most commonly andesitic in composition .
火山岩的组成最通常是安山岩。 |
| 2. | Marine volcanics of early ordovician was found in zhifang region
摘要纸房地区具有早奥陶世海相火山岩存在。 |
| 3. | On metallogenic characteristics of the volcanics - type uranium deposits and their ore prospects in jiangxi province
江西火山岩型铀矿成矿特征及找矿前景 |
| 4. | Its petrochemical characteristics show that the volcanics was formed in oceanic island tectonic environment
岩石化学特征表明火山岩形成于洋岛构造环境。 |
| 5. | Basic features and genesis of the early - middle cambrian epoch volcanics in the xiangmaoshan district of western part of northern qilian
中寒武世基性火山岩基本特征及其成因 |
| 6. | The subdivision has both scientific and practical significance on studying volcanics , geological structures and minerals
火山岩分区的划分对火山岩、地质构造和矿产的研究具有重要的意义和实用价值。 |
| 7. | Granite greenstone - hosted , meta - clastics - hosted , volcanics - subvolcanics hosted and sedimentary rock - hosted micro - disseminated gold deposits are of industrial value
具有工业价值的金矿类型以花岗岩绿岩型、变碎屑岩型、微细浸染型、火山次火山岩型为主。 |
| 8. | Because the volcanics and sedimentary rocks alternated with one and another , the volcanic activity of these two periods had the characteristics of many a time , multipoint of erupting
火山岩与正常沉积岩相间分布，且火山角砾岩发育，因此这两个时期火山活动都具有多期次、多点喷发的特点。 |
| 9. | China is potential for gold mineral resources , especially for granite - greenstone hosted , meta - clastics - hosted , volcanics - subvolcanics - hosted gold deposit and sedimentary rock - hosted micro - disseminated gold deposits
中国金矿找矿前景可观，以产于花岗岩绿岩地体中的金矿、产于沉积岩中的微细浸染型金矿、产于变碎屑岩中的金矿和产于火山次火山岩中的金矿最具找矿潜力。 |
| 10. | Abstract : based on the isotopic dating data of volcanics and recent research achievements of age boundary between jurassic and cretaceous systems , it is suggested that the volcanic series in shengyuan basin must be attributed to lower cretaceous
文摘:本文根据盛源盆地火山岩同位素年龄数据和侏罗-白垩系界线年龄的最新研究成果，认为盛源盆地火山岩系的地层时代应属早白垩世。 |
