Results 171 to 180 of about 9,466 (220)
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Mantle hotspots, plumes and regional tectonics as causes of intraplate magmatism
Terra Nova, 1993In continental areas it is often difficult to determine the cause of intraplate magmatism. Large volumes of magma, high eruption rates, and the presence of a hotspot trace on the adjacent ocean floor, are all evidence for the presence of an anomalously hot mantle.
C. J. Hawkesworth, K. Gallagher
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Intraplate Earthquakes, Lithospheric Stresses and the Driving Mechanism of Plate Tectonics
Nature, 1973Focal mechanisms of about eighty intraplate earthquakes and other information on in situ stress indicate that the interiors of many lithospheric plates are characterised by large horizontal compressive stresses. These stresses seem to be related to the driving mechanism of plate tectonics.
LYNN R. SYKES, MARC L. SBAR
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Recent tectonics of Tripolitania, Libya: an intraplate record of Mediterranean subduction
Geological Society, London, Special Publications, 2011Abstract High-energy seismicity is historically recorded in Tripolitania, Libya suggesting that this area, far from Mediterranean convergent margin, is currently deforming. How this deformation relates to surrounding tectonics of the Africa-Europe convergence is still poorly known.
CAPITANIO F. A +3 more
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1988
According to classical plate tectonic theory, plates are essentially stable internally, and tectonic effects are concentrated at their boundaries. However it has always been recognized that this was only true to a first approximation, and that all regions of the Earth’s surface experience tectonic effects to some degree.
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According to classical plate tectonic theory, plates are essentially stable internally, and tectonic effects are concentrated at their boundaries. However it has always been recognized that this was only true to a first approximation, and that all regions of the Earth’s surface experience tectonic effects to some degree.
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Solimões megashear: Intraplate tectonics in northwestern Brazil
Geology, 1991A belt of deformation in the Solimoes basin of northwestern Brazil extends east-northeast from near the Peruvian border for about 1300 km. The belt is characterized by the en echelon arrangement of folds and faults interpreted as the result of right-slip displacements in a transpressive regime.
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Sri Lanka - India Intraplate Tectonics - Precambrian to Present
Gondwana Research, 2000Abstract The tectonic history of Sri Lanka - India can be traced from the Precambrian to the present. On the basis of the geological record, plate tectonic processes have operated for example, the Highland Group of Sri Lanka may have represented a Precambrian plate tectonic suture.
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Intraplate tectonics of the western North American plate
Tectonophysics, 1977Abstract Fault-plane solutions, Cenozoic geology, and in-situ stress measurements are used to infer contemporary extension between subplates of the western North American plate. Intraplate, northwest extension is accommodated by strike-slip and oblique normal faulting along present-day seismic zones.
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Control of tectonic inheritance on continental intraplate strain rate and seismicity
Tectonophysics, 2018Abstract Present-day deformation and seismicity of continental lithosphere are characterized by a first-order dichotomy between Plate Boundary Zones (PBZ) and Stable Continental Regions (SCR). Whereas the former are associated with high strain and seismicity rates, the latter tend to remain un-deformed, except in localized regions of higher strain ...
Stephane Mazzotti, Frédéric Gueydan
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Intraplate tectonics in stable Europe as related to plate tectonics in the Alpine system
Geologische Rundschau, 1975Western Europe is traversed by the Rhinegraben rift system. The stages of graben formation evolved coincidentally with the culminations of compressional folding in the Alps. Rhinegraben rifting has been controlled by mantle diapirism, but the Alpine orogeny by subduction of lithosphere. Presumably, Alpine subduction forced compensating mantle uplift in
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Tectonic aspects of intraplate seismicity in the northeastern Indian Ocean
Tectonophysics, 1989Abstract Since the Late Cenozoic, the northeastern Indian Ocean region of the Indo-Australian plate has been characterized by tectonic activity that is unusual in a mid-plate setting. This activity, including deformation of the basement and the sediments and a high level of seismicity, is typical of plate boundaries.
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