Earthquake & tectonic plates. Earth structure and plate boundaries categories: Transform boundaries, Convergent boundaries (Subduction boundaries, Collisional boundaries)
For example, discrete ridge axis jumps have been observed along the Nazca-Pacific plate boundary and the Galapagos Ridge. We suggest that these jumps probably resulted from consumption of the thickrooted, buoyant, aseismic Nazca, Juan Fernandez, Carnegie ridges, and perhaps also the Cocos Ridge, ...
1. Introduction Ophiolites, preserved as obducted slivers of ancient oceanic litho- sphere in Precambrian and Phanerozoic orogenic belts and on continen- tal margins, provide the most conspicuous and robust perspectives on intraoceanic divergent and convergent margin tectonics, mantle hetero- geneity,...
The vast majority of volcanism on Earth occurs at spreading and convergent plate boundaries (e.g., mid-oceanic ridges and subduction zones), whereas there are also volcanoes far from these plate boundaries, such as the Changbaishan-Tianchi volcano within the continent of northeastern Asia (e.g....
This difference in number of events was proposed to be due to the presence of a serpentinized mantle layer overlying a pristine mantle layer located below 30–35 km down to the base of the lithosphere located at ~60 km, with a large stress drop occurring at the boundary between the ...
Isotopic composition of helium, and CO2 and CH4 contents in gases produced along the New Zealand part of a convergent plate boundary. Geochim. Cosmochim. Acta 57, 3427–3455 (1993). Article Google Scholar Todd, E. K. et al. Earthquakes and tremor linked to seamount subduction during ...
The convergent region attracts and accumulates Lagrangian particles and may therefore be over-represented in the final spectrum. The total energy of the Lagrangian spectrum is theoretically equal to that of the Eulerian spectrum (i.e., the conservation of energy) because the Doppler shift effect ...
This chapter overviews global and local features of oceanic trenches. Most oceanic trenches are associated with plate subduction boundary systems; they form due to the downward bending of an oceanic plate entering a subduction system. Their total length is 47,900 km, longer than Earth’s circumfere...
Equatorward alongshore winds over major eastern boundary upwelling systems (EBUSs) drive intense upwelling via Ekman dynamics, surfacing nutrient-rich deep waters and promoting marine primary production and fisheries. It is generally thought, dating back
The Kuroshio transport east of the LS is convergent in the meridional direction and divergent in the zonal direction. When strong CEs interact with the Kuroshio, the convergence is greatly enhanced, and the transport at the northern boundary changes from 0.026 Sv northward to 0.002 Sv ...