Results 111 to 120 of about 5,282 (167)

Crustal movement and crustal structure of the Gulf of Suez margins

Journal of Spatial Science, 2015
In this study, the crustal movement and structures beneath the Gulf margins are investigated by applying Global Positioning System (GPS) and receiver function techniques. Our results revealed the symmetrical crustal thickness beneath west and east Gulf margins with average crustal thickness of 26 km near the coast and 32–35 km inland.
Ahmed Hosny, Mervat M. Refaat, A. Rayan
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Crustal structure in Alaska

Tectonophysics, 1973
Abstract Knowledge of the crustal structure is still fragmentary, despite the stimulus to geophysical work provided by the earthquake of March 28, 1964 (GMT), the underground nuclear explosion LONGSHOT, and the June 1967 series of earthquakes in the Fairbanks area.
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Crustal structure of Antarctica

Tectonophysics, 1973
Abstract Seismic refraction profiles completed in the past twenty years reveal that the top of the basement complex generally lies near sea level in East Antarctica but typically 2 or 3 km below sea level in West Antarctica. Throughout much of East Antarctica the thickness of the layer overlying the basement complex is less than half a kilometer ...
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Crustal structure of the Peninsular India

Pure and Applied Geophysics, 1973
Earthquake parameters for the forty aftershocks of the main Koyna earthquake of 10 December, 1967, have been determined. Depths of the foci of the earthquakes have been found to vary between 2 to 17 km. The velocities for the phasesPg,P*,Pn have been observed to be 5.78±0.00, 6.58±0.04, 8.19±0.02 km/sec, and forSg,S*,Sn to be 3.42±0.00, 3.92±0.01 and 4.
R. K. Dube, J. C. Bhayana, H. M. Chaudhury   +2 more
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Crustal Structure of the Earth

2013
The boundary between the crust and the mantle was discovered by Mohorovicic in 1909 under the European continent. Subsquent research in this century established the major differences between the continental and oceanic crust; a typical thickness for the continental crust is 30-50 km while a typical thickness for me oceanic crusts is 6 km.
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Crustal structure of the Rhinegraben area

Tectonophysics, 1973
Abstract Numerous ge ological and geophysical investigations within the past decades have shown that the Rhinegraben is the most pronounced segment of an extended continental rift system in Europe. The structure of the upper and lower crust is significantly different from the structure of the adjacent “normal” continental crust.
S. Mueller, E. Peterschmitt, K. Fuchs, D. Emter, J. Ansorge   +4 more
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Crustal structure of Iceland

Journal of Geophysical Research, 1960
A report is given of the results of a seismic field investigation in 1959 of the crustal structure of Iceland. Explosions were made at a depth of 30 meters in Graenavatn, a crater lake in southwest Iceland, and recordings were made with a 12-channel refraction apparatus at a number of stations along two profiles across Iceland, one profile across the ...
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The crustal structure of Concepcion Bank

Marine Geophysical Researches, 1978
From reflection and refraction data a crustal model of the Concepcion Bank NE of Lanzarote Island has been calculated. It is interpreted as a tectonic unit of volcanic origin. Its evolution history of mainly Tertiary age does not depend on sea floor spreading. The Bank is built of intruded basaltic layers over material with a reduced mantle p-velocity.
W. Weigel, P. Goldflam, K. Hinz
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Arcuate Crustal Structures

1986
Abstract The orogenic ridges on continents and island arcs have a similar history of development and character of tectonic deformations. They also have much in common with the linear ridges. The arcuate shape of orogenic uplifts is associated with long geological history, during which the consecutively appearing structures overlaid one another or ...
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The crustal structure of the Seychelles bank

Deep Sea Research and Oceanographic Abstracts, 1964
Abstract The Seychelles are anomalous amongst oceanic islands in that Pre-Cambrian granite occurs on them. Seismic investigations are described in which 13 km of granite were found beneath the central group of islands. The depth to the mantle is approximately 33 km, and the crustal structure is continental in character.
D. Davies, T.J.G. Francis
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