A. the collision of two continental plates B. the divergence of two oceanic plates C. the subduction of an oceanic plate under a continental plate D. the movement of a single plate 相关知识点: 试题来源: 解析 B。解析:洋中脊主要是由于两个大洋板块的张裂(背离运动)形成的。选项A,两个大陆板...
In April, 1991, we witnessed from the submersible Alvin a suite of previously undocumented seafloor phenomena accompanying an in-progress eruption of the mid-ocean ridge on the East Pacific Rise crest at 9°45′N–52′N. The volume of the eruption could not be precisely determined, although ...
Whereas the majority of eruptions at oceanic spreading centers produce lavas with relatively homogeneous mid-ocean ridge basalt (MORB) compositions, the fo... VD Wanless,MR Perfit,WI Ridley,... - 《Journal of Petrology》 被引量: 130发表: 2010年 Plume-Ridge Interaction along the Galápagos Spre...
The bulk of the northward motion occurs before opening of the Scan Basin, and we reconstruct the opening of the Central Scotia between 48.5 and 36.9 Ma, corresponding to chrons C22-C17. Although both a Mesozoic and Cenozoic Central Scotia Sea are feasible within our reconstruction, we prefer a...
China has made a breakthrough inelectromagnetic detection across the mid-ocean ridge, said the South China Sea Institute of Oceanology (SCSIO) under the Chinese Academy of Sciences on Tuesday. The institute made the remarks after it conducted a deep-sea experiment with the China University of Geo...
Lonsdale (1996), Does the mid-ocean ridge propagate concurrently both on the seafloor and at depth? Implications from a gravity study of a large nontransform offset at 36.5°S, East Pacific Rise, J. Geophys. Res., 101(B12), 28281–28289, doi:10.1029/96JB02723. Publication History Issue ...
The viscosity of magma plays a crucial role in the dynamics of the Earth: from the crystallization of a magma ocean during its initial stages to modern-day volcanic processes. However, the pressure-dependence behavior of viscosity at high pressure remain
We present new geological observations and geochemical data from the modern Iberia and fossil Alpine Tethys Ocean Continent Transition and the West Pyrenean Mauléon hyperextended rift basin. We show evidence for a km-scale fluid flow along detachment faults and discuss the conditions under which ...
(R2= 0.955,p< 0.05), suggesting the TCC in abalone foot muscle can be estimated using the a* value. Furthermore, introducing carotenoids to formulated feed imparts an orange hue to the foot muscle, but this effect is inferior compared to usingGracilariopsis lemaneiformiswith a similar ...
a consequence of temperature’s role in controlling the rate that sinking organic matter is broken down and metabolized by bacteria, a process that occurs faster at warmer temperatures. In a warmer ocean, a smaller fraction of organic matter reaches the ocean interior, affecting food supply and ...