(2016). Thickness of the oceanic crust, the lithosphere, and the mantle transition zone in the vicinity of the Tristan da Cunha hotspot estimated from ocean-bottom and ocean-island seismometer receiver functions. Tectonophy- sics, 716, 33-51. https://doi.org/10.1016/j.tecto.2016.12.013...
A. The oceanic crust is thicker than the continental crust B. The thickness of the crust is the same everywhere on the Earth C. The continental crust is generally thicker than the oceanic crust D. The crust has no thickness difference at all ...
The mean thickness of oceanic crust is 5 km whereas that of the continental is around 30 km. The continental crust is thicker in the areas of major mountain systems. It is as much as 70 km thick in the Himalayan region.
Existing thermal models of the oceanic lithosphere predict too sharp an increase of heat flow towards the ridge axis. A new mathematical model of a thickening lithosphere is presented. The temperature distribution is computed by the use of observed surface heat flow as a boundary condition. If obs...
A digital database on the seismostratigraphy of the oceanic crust of the northeastern part of the Indian Ocean is compiled. In the first layer of the crust, the interval seismic wave velocities are 3.02 ± 0.16 km/s; in the second layer, they equal to 5.31 ± 0.27 km/s; and, in the...
Examination of oceanic seismic refraction results indicates a correlation between total crustal thickness and spreading rate, with slower spreading producing thinner crust. The effect is seen at spreading rates less than about 20 mm yr 1 . The crustal thickness and its dependence on spreading rate ar...
Multichannel seismic reflection data acquired between 8°50′ and 9°50′N and between 12°30′ and 13°30′N along the East Pacific Rise provide a three-dimensional view of the young oceanic crust. Seafloor-to-Moho reflection travel times vary by up to 0.9 s within our study areas; the...
The surface of the earth can be divided into the continental crust and the oceanic crust. The continental crust is made mostly of granite while the oceanic crust is made of basalt. The average thickness of the continental crust is 25 miles and the average thickness of the oceanic crust is ...
1.12.4.1 General Seismic Structure of the Oceanic Crust Low velocities (<5 km s−1 P-wave velocity), high seismic attenuation, and a strong velocity gradient at its lower boundary which can be imaged with seismic reflection techniques, characterize the upper few hundred meters of the oceanic ...
We developed a simple quantitative framework based on crustal thickness estimations along the Carnegie, Cocos and Malpelo ridges, to place first-order constraints on the tectonic evolution of the Galapagos Volcanic Province and on the along-axis intensity of the Galapagos melt anomaly during the last...