| 1. | 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。 |
| 2. | Establish and genesis of oceanic island basic volcanic rock early carboniferous in northern of daxing ' anling 大兴安岭北段早石炭世洋岛型玄武岩的确立及成因意义 |
| 3. | Asian americans and pacific islanders are the only group in the u . s . for which cancer is the leading cause of death 亚裔美国人和太名洋岛民是美国唯一癌症位居死亡原因第一顺位的群体。 |
| 4. | It belong series of the alkaline basalt , and have character of island ocean in geochemistry and petrochemistry 岩石化学、地球化学特征表明,该组火山岩属碱性玄武岩系列大西洋型(钠质类型) ,具洋岛特征。 |
| 5. | Fdas asian pacific islander womens health page national asian pacific american families against substance abuse national asian womens health organization 美国食品与药物管理局的亚太平洋岛民妇女健康网页fdas asian pacific islander womens health page |
| 6. | Therefore , they most likely originated from the asthenospheric mantle at a relatively great depth . the quaternary basalts at datong include both alkaline and tholeiitic types 相似于洋岛玄武岩( oib )的微量元素特征指示玄武岩主要来自于软流圈地幔,岩浆起源较深。 |
| 7. | The internal mineral separates and whole - rock sm - nd isochron age for gabbro dikes from the dangqiong ophiolite is 373 ? 8ma , inferring a magmatic activity during late devonian , which end ( t ) = + 3 . 3 suggests that its tectonic setting was probably oceanic island 其nd ( t ) = + 3 . 3 ,认为其时形成环境为洋岛,可能代表了新特提斯蛇绿岩形成时所携带的古老洋壳。 |
| 8. | The analysis of the geochemical and petrologic characteristics features shows that the assemblage of volcanic rocks is the series of middle ocean ridge basalt , ocean island basalt and ocean island andesite basalt , which implies that it is the relic of the ocean crust , i . e . typical ophiolites 通过岩石特征和地球化学分析,确定了盐边群荒田组火山岩组合为洋脊玄武岩、洋岛玄武岩、洋岛安山玄武岩系列,说明这是洋壳残片,即典型的蛇绿岩套。 |