Results 11 to 20 of about 4,943,633 (275)
Magnetic mineralogy of the lower continental crust [PDF]
Journal of Geophysical Research: Solid Earth, 1986 Rocks that were once present in the deep continental crust can be found in surface exposure as xenoliths, as parts of high‐grade metamorphic and plutonic terrains, and as obducted lower crustal cross sections. A review of magnetic and mineralogic studies of samples representing all such occurrences shows that magnetite is the only magnetic phase ...
Frost, B. R., Shive, P. N.
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Towards using seismic anisotropy to interpret ductile deformation in mafic lower crust [PDF]
, 2008 The lower crust forms an important geodynamic control in continental tectonics and the communication and coupling of kinematics between surface and deep-Earth processes.
Tatham, Daniel John
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The role of crustal and mantle sources in the genesis of granitoids of the Antarctic Peninsula and adjacent crustal blocks [PDF]
, 2001 Magmatic rocks from the Antarctic Peninsula show marked variations in isotope composition, which reflect changes in the geodynamic evolution of the peninsula through time. Most Antarctic Peninsula granitoids formed as a result of subduction: they fall on
Millar, I.L. +3 more
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The origin of Proterozoic massif-type anorthosites: Evidence from interactions between crustal xenoliths and basaltic magma [PDF]
, 1999 Plagioclase-rich reaction zones occur around numerous aluminous crustal xenoliths within a suite of Palaeogene sub-volcanic basic sheets on the Isle of Mull, NW Scotland.
Preston, R.J. +2 more
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Earthquake Research Advances, 2023 The relationship of the crustal contact between the Indian and Eurasian plates is a key issue in understanding crustal thickening and the subduction of the Indian lithosphere beneath the Qinghai-Tibetan Plateau.
Gaochun Wang +9 more
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Geochemistry, Geophysics, Geosystems, 2020 Existing models describing continental crust deformation require the coexistence of strike‐slip faults and crustal blocks rotating between them, although the dimension and shape of the blocks and the location and offset of the faults are mostly ...
Alessandro Todrani +3 more
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The Role of Lower Crustal Rheology in Lithospheric Delamination During Orogeny
Frontiers in Earth Science, 2021 The continental lower crust is an important composition- and strength-jump layer in the lithosphere. Laboratory studies show its strength varies greatly due to a wide variety of composition. How the lower crust rheology influences the collisional orogeny
Lin Chen
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Heterogeneous crust and upper mantle across southern Kenya and the relationship to surface deformation as inferred from magnetoteluric imaging. [PDF]
, 2007 We have used magnetotelluric data imaging to determine the resistivity structure across southern Kenya and our results suggest the presence of a buckled blocky or segmented lithosphere across the region.
Meju, Maxwell, Sakkas, V.
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Geochemistry, Geophysics, Geosystems, 2021 Controversy surrounds the rheology of the continental lithosphere, and how this rheology controls the evolution and behavior of mountain ranges. In this study, we investigate the effect of lateral contrasts in the strength of the lower crust, such as ...
Camilla Penney, Alex Copley
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Transversely isotropic lower crust of Variscan central Europe imaged by ambient noise tomography of the Bohemian Massif [PDF]
Solid Earth, 2021 The recent development of ambient noise tomography, in combination with the increasing number of permanent seismic stations and dense networks of temporary stations operated during passive seismic experiments, provides a unique opportunity to build the ...
J. Kvapil +4 more
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