海底扩张

据此认定西南海盆是在晚始新世至早渐新世通过海底扩张形成的。

Therefore , we believe that the SW Subbasin was formed by sea floor spreading in late Eocene to early Oligocene .

系统的深海深度测量揭示了与海底扩张有关的狭谷带、断裂带和海沟的结构。

It is barely ten since systematic deep ocean bathymetry revealed the structure of rifts , fractures and trenches associated with sea floor spreading .

这些侵入杂岩体被认为是新元古代扬子地块西北缘发生长寿命（LongLived；950-730Ma）海底扩张，板块俯冲的残留证据。

These intrusive complexes are considered to be the residual evidence of the plate subducting because of the Neoproterozoic Long Lived seafloor spreading ( during950Ma to730Ma ) occured in the northwestern margin of the Yangtze block .

海底扩张中心的热液作用对贱金属矿化具有重要意义，而且其中许多富含伴生组分Au或Au&Ag，有的地段可圈出单独的金矿体。

Hydrothermal processes at seafloor spreading centers are of great importance to base metal mineralization , and many of which have been found to be rich in associated Au or Au-Ag : Some localities can be delimited as independent gold orebody .

第二次海底扩张发生于32～17Ma前。

The second seafloor spreading took place before 32-17 Ma BP .

开展以Sr和REE等微量元素以及Sr、Nd稳定同位素地球化学研究，对于解决西太平洋边缘海的海底扩张和古海洋及东亚大陆的环境变迁有重要的意义。

The studies of Sr and REE and Sr and Nd isotopes geochemistry in the western Pacific marginal sea will play an important role in the study of the sea floor spreading of western Pacific marginal sea and the evolution of the paleoceanography environments and Eastern Asia continent environments .

地壳轧展效应与海底扩张及大陆漂移

Crustal " rolling-extending effect " and sea-floor spreading and continental drift

大洋海底扩张图蛛网裂缝的扁壳力学模式

The mechanical model of oblate shell for cobweb fissure of ocean floor spreading

大陆漂移和海底扩张。

The continental drift theory and sea-floor spreading theory .

被动大陆边缘：从大陆张裂到海底扩张

Passive margins : from continental rifting to oceanic spreading

海底扩张和陆壳大洋化，均能形成洋壳。

Both sea-floor spreading and oceanization may lead to the formation of oceanic crust .

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

南海中央海盆条带状磁异常特征与海底扩张

Characteristics of striped magnetic anomalies in the Central Sea basin of the South China Sea

海底扩张的潮汐模式

Tidal model of sea - floor spreading

板块构造学说揭示了海底扩张和板块的水平运动现象，阐明了与板块边界相联系的岩浆活动。

The plate tectonic theory reveals the seafloor spreading and plate lateral movement , and illustrates magmatism related to plate boundaries .

随着20世纪50年代晚期和60年代早期海底扩张的发现，大陆漂移思想重新复苏。

With the discovery of sea-floor spreading in the late 1950 's and early 60 's , the idea was reinvigorated .

20世纪地球科学经历了大陆漂移、海底扩张和岩石层板块大地构造的发展过程，通过研究的深化和认识的更新，使得许多孤立的地质现象进一步得到规律性的认识。

The development of earth sciences has experienced from continental drifting , seafloor spreading to lithosphere plate tectonics with their connotation of mobilism in 20th century .

地壳上地幔是地球板块运动、海底扩张、地震、火山、地热等活动的主要场所。

The crust and upper mantle are the main areas where the plate movements , ocean spreading , earthquakes , volcanoes , and geothermal activity occur .

它发生在新生代第三纪中晚期，距今32.3Ma～1.7Ma，具有太平洋西部边缘海底扩张型特点。

It occurred in Middle Late Tertiary ( 32.3 Ma ~ 1.7 Ma ), and exhibits characteristics of seafloor spreading on the western margin of western Pacific Ocean .

而东部次海盆深部和浅部磁异常的磁源具有同时性和相同形成机理，是通过海底扩张作用的方式形成的。

In the Eastern Sub basin the shallow and the deep magnetic sources have the same time and mechanism in formation , and are controlled by the seafloor spreading .

他们把他们的理论叫做“海底扩张”。这个理论解释了，随着海底扩张，板块在不同的方向上被推拉。

They called their theory " sea floor spreading . " The theory explains that as the sea floor spreads , the tectonic plates are pushed and pulled in different directions .

该构造面在西南海盆下6~15km处形成一个密度界面，此界面可能是西南海盆北西&南东向海底扩张期间地幔上隆所引起的。

This structure plane forms a density interface 6-15 km below the sea basin , which might be caused by mantle uplift during NW-SE-trending sea floor spreading of the Southwest sea basin .

位于菲律宾板块和太平洋板块之间的马里亚纳海槽，处于弧后张裂向海底扩张的过渡阶段，是深入研究板块运动与弧后扩张动力学过程的理想地区。

The Mariana Trough is an actively opening back arc basin that lies at the eastern edge of the Philippine Sea plate , and in the transition time from rift to sea floor spreading .

其中有些盆地仍然是海底扩张的中心，一些是不再活动的海盆，也有些海盆正在遭受挤压作用，而一些海盆则已经完全被弧后衰缩作用所消减。

Some basins remain as the oceanic spreading center , some became non active basins , some are undergoing compressional action whereas some oceanic basins have been completely subducted due to back arc collapse .

把这个力学模型计算的力矢量展布于地球表面，可以非常直观地显示大陆漂移和海底扩张在这些力的作用下如何进行运动。

Spreading out these force vectors of mechanics model on the earth 's surface , it can be directly seen how the continental drifting and sea - floor spreading are in motion affected by these forces .

从华北陆块南缘大洋扩张到北秦岭造山带板块俯冲的转换时限这样，大洋中脊就成为板块分离边界，海底扩张就发生在这里。

Timing of the Transformation from Seafloor Spreading on the South Margin of the North China Block to Subduction within the North Qinling Orogenic Belt The rifts therefore represent divergent plate boundaries where seafloor spreading is taking place .

提出水平的被动拉张力是南海岩石圈纵向演化前两个阶段形成的主要因素，并且在这两个阶段中，岩石圈的纵向演化时间主要集中在海底扩张阶段。

The authors think that the level passive stretch is the main factor in the vertical evolution history of lithosphere in the South China Sea region , and the time of evolution is focused on the seafloor spreading stage .

认为冲绳海槽尚未出现伴有新洋壳形成的海底扩张作用，冲绳海槽是弧后裂陷，而非弧后扩张的产物。

It is also believed that the spreading of sea floor with creation of new ocean crust has not appeared yet in the Okinawa Trough , which is a product of back-arc taphrogenesis , but not that of back-arc spreading .

整个20世纪的重大成就是对地球的认识经历了大陆漂移、海底扩张和岩石层板块大地构造的发展，基本上建立起以活动论为内涵的全球构造观。

In the whole period of the 20th century , the cognition of Earth has experienced several stages , i.e. , continental drift sea floor spreading lithospheric plate tectonics , and established basically the global tectonics with its connotation of mobilism .

东太平洋CC区多金属结核矿带的形成应归于海底板块扩张活动的一种资源效应和经后期表生地质作用改造的结果。

The formation of the polymetallic nodule belt in the CCZ is attributed to the effect of resources of plate tectonics and seafloor spreading , and the reworking of the late-stage supergene geological processes .