mid-ocean ridge

In sedimentary environment discrimination diagrams such as 100×Fe2O3/SiO2-100×Al2O3/SiO2,Fe2O3/(100-SiO2)-Al2O3/(100-SiO2) and Fe2O3/TiO2-Al2O3/(Al2O3+Fe2O3),chert samples fall into the areas of the mid-ocean ridges or deep-sea.

研究表明,呈厚层状产出的绿色、棕褐色硅质岩具有较高的SiO2含量,局部受Fe、Mn矿化,Al/(Al+Fe+Mn)比值小,在Fe-Mn-Al三角成因判别图解中,大部分硅质岩样品落入热水沉积区域,微量元素Sr、Zr、Cu、Zn和Ba含量较高,稀土元素∑REE较低,Ce负异常,Eu正异常,北美页岩标准化后配分模式稍向左倾,体现出热水沉积特征;在沉积环境判别图100×Fe2O3/SiO2-100×Al2O3/SiO2、Fe2O3/(100-SiO2)-Al2O3/(100-SiO2)和Fe2O3/TiO2-Al2O3/(Al2O3+Fe2O3)中,硅质岩样品投影到洋中脊和深海区域,说明形成于大洋中脊和深海盆地环境;硅质岩常量和稀土参数变化特征图显示,在剖面中PCL-1、PCL-5和PCL-7采样位置更接近热液中心;硅质岩的形成与板块的汇聚消减产生的以洋中脊和海底热点为中心的洋壳热水系统有关。

A review for the continental drift theory from the mid-ocean ridge——Give consideration to the expanding Earth hypothesis;

从大洋中脊反思大陆漂移说——兼论地球膨裂说

Exploration for Hydrothermal Fluids of Mid-Ocean Ridge and Novel Chemical Sensors;

大洋中脊热水探测与新型传感器

In this paper, a review of the InterRidge Workshop 2003, Beijing is made, and the organization, task and progress of the InterRidge Workshop as well as the trends of mid-ocean ridge geology studies in the fduture are introduced in brief.

评述了2003年10月27 30日在北京召开的"大洋中脊国际学术研讨会",简要介绍了国际大洋中脊协会(InterRidge)的机构组成、任务和工作进展,以及今后大洋中脊地质研究的发展趋势。

Hydrothermal sulfide sampled from the Mid-Atlantic Ridge in 1988 was rich in loose granular and colloid form pyrite whose morphology, composition and ther-moelectricity characteristics, were studied by authors in their research on the pyrite origin, girdle origin and hydrothermal evolution characteristics.

大西洋中脊热液硫化物（矿床）中广泛出现松散粒状和胶状黄铁矿，利用1988年所采样品通过其形态、成份和热电性质的研究，对这种黄铁矿的成因、环带成因和热液演化特征进行初步探讨。

east pacific rise geothermal belt

东太平洋中脊地热带

The sea floor is spreading away from the mid-ocean ridges.

海底正在从大洋中脊扩张开来。

Jurassic and Cretaceous, the marginal ocean basin was in the stage of ocean crust evolution and had a setting similar to mid-ocean ridge.

侏罗－白垩纪为洋盆洋壳演化期，处于类似洋中脊的构造环境。

Lead Isotope Compositions of Seafloor Surface Hydrothermal Sediments in the TAG Hydrothermal Field of Mid Atlantic Ridge and its Geological Implications

大西洋洋中脊海底表层热液沉积物的铅同位素组成及其地质意义

Predominant strains of polycyclic aromatic hydrocarbon-degrading consortia from deep sea of the Middle Atlantic Ridge

大西洋洋中脊深海多环芳烃降解菌群的优势菌分析

Diversity of Arsenite-resistant Bacteria from Deep Sea Sediments of Ocean Ridge;

深海洋中脊沉积物砷抗性菌的多样性分析

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

洋中脊，也叫扩展中心，出现在两个板块相互分离的地方。

DISCOVERY OF MICROBIAL FOSSILS IN HYDROTHERMAL PLUME OF THE SOUTHWEST INDIAN RIDGE AND ITS SIGNIFICANCE

西南印度洋中脊热液羽状流中微生物化石的发现及意义

The rifts therefore represent divergent plate boundaries where seafloor spreading is taking place.

这样，大洋中脊就成为板块分离边界，海底扩张就发生在这里。

The plates are bounded by an interconnected network of ridges, transform faults, and trenches.

板块以一个由洋中脊、转换断层和海沟相互连接形成的网络为界。

Seamounts, underwater volcanoes, Rift Valley, the mid-ocean ridge,constitute a rich world of the ocean floor.

海底山脉、海底火山、裂谷、大洋中脊等等，构成了丰富的海底世界。

Diversity of PAHs-Degrading Bacteria from Deep Sea Water Column at Indian Ocean Middle Ridge;

西南印度洋中脊深海水体PAHs降解菌的多样性分析

Characteristics of trace and rare earth elements suggest that Ophiolite originated from the setting similar to mid-ocean ridge.

微量元素和稀土元素特征显示蛇绿岩形成于类似洋中脊的构造环境。

The floor of the Atlantic ridge in the middle from north to south

大西洋洋底在中部形成由北向南的海脊

The floor of the Atlantic ridges in the middle from north to south.

大西洋洋底在中部形成由北向南的海脊。

Marine geodynamics:from mid-oceanic ridge system to subduction factory

洋底动力学——从洋脊增生系统到俯冲消减系统

Over the years, thousands of specimens of marine reptiles, fish and invertebrates have been recovered from these rocks.

几年时间内，在这些岩石中取得了数以千计的海洋爬行动物、鱼类以及无脊椎动物的标本。

A silvery blue fish(Oligoplites saurus)of Atlantic waters, having leathery skin, yellow fins, and five spines on the anal fin.

鳞?一种生活在大西洋中的银蓝色鱼类（蜥革?），长有革质皮肤和黄色的鳍，尾鳍上有五根脊刺