Showing papers in "Tectonophysics in 2003"

TL;DR: The assembly of the eastern part of Gondwana (eastern Africa, Arabian-Nubian shield (ANS), Seychelles, India, Madagascar, Sri Lanka, East Antarctica and Australia) resulted from a complex series of orogenic events spanning the interval from ∼750 to ∼530 Ma as mentioned in this paper.

TL;DR: The Qinling orogen preserves a record of late mid-Proterozoic to Cenozoic tectonism in central China as mentioned in this paper, where high pressure metamorphism and ophiolite emplacement assembled the Yangtze craton, including the lower Qinling unit, into Rodinia during the ∼1.0 Ga Grenvillian orogeny.

TL;DR: In this paper, a new model was proposed to explain the extensional tectonic transition from contractional to extensional deformation in late Mesozoic time by collision of an amalgamated North China-Mongolia block and the Siberian plate.

TL;DR: In this article, the authors discuss the various models that have been proposed and highlight key areas of contention, including the relationships between the various Rodinia cratons to Laurentia, the notion of true polar wander (TPW), the lack of reliable paleomagnetic data and the enigmatic interpretations of the geologic data.

TL;DR: In this paper, the authors used detailed mapping and microstructural observations of the excellently exposed Carboneras fault zone in southeastern Spain to elucidate both the internal arrangement of fault products and their likely mechanical properties.

TL;DR: In this paper, the authors trace the Neoproterozoic, Baltoscandian, passive margin of Baltica outboard into the suspect, Iapetus oceanic terranes and farther into the highest allochthons, which carry evidence of Laurentian ancestry.

TL;DR: The European Variscan and Alpine mountain chains are collisional orogens, and are built up of pre-Variscan "building blocks" which, in most cases, originated at the Gondwana margin this article.

TL;DR: In this paper, a model involving detachment faulting along various stratigraphic layers at different stages of its evolution is proposed to explain the structural pattern of a Mesozoic thrust system in South China.

TL;DR: Palaeomagnetic data have been used to study the configurations of continents during the Proterozoic as discussed by the authors, and the results show that the continents lie predominantly in low to intermediate latitudes.

TL;DR: Based on field analysis of fault-slip data from different rock units of the Cretaceous basins along the middle part of the Tan-Lu fault zone (Shandong Province, eastern China), Wang et al. as mentioned in this paper document polyphase tectonic stress fields and address the changes in sense of motion of the T-L fault zone during the early and mid-Cretaceous.

TL;DR: In this article, the authors proposed that explosive vents associated with this subduction and related to Andean-type magmatism in Avalonia were the source for the gigantic mid-Caradoc (c. 455 Ma) ash fall in Baltica (i.e. the Kinnekulle bentonite).

TL;DR: In this article, the authors discuss the question of whether the late Mesoproterozoic and early Neoproteerozoic rocks of eastern, central and southern Africa, Madagascar, southern India, Sri Lanka and South America have played any role in the formation and dispersal of the supercontinent Rodinia, believed to have existed between about 1000 and 750 Ma ago.

TL;DR: In the South Caspian Basin, a curved fold and thrust belt can link a deformation zone created by movement of the basement block to one created by the regional convergence as discussed by the authors.

TL;DR: In this paper, modern Tethyan, Mediterranean, and Pacific analogues are considered for several Appalachian, Caledonian, and Variscan terranes (Carolina, West and East Avalonia, Oaxaquia, Chortis, Maya, Suwannee, and Cadomia) that originated along the northern margin of Neoproterozoic Gondwana.

TL;DR: In this paper, an important rifting event, accompanied by massive igneous activity, is recorded in the Ossa-Morena Zone of the SW Iberian Massif (European Variscan Orogen).

TL;DR: In this article, an interval of melting and melting of orogenic middle crust followed by emplacement of a syn-extensional pluton during decompression and cooling are demonstrated for a metamorphic core complex in central Turkey.

TL;DR: In this paper, the effects of fluid overpressures and seepage forces in tectonics using the results of scaled physical models were demonstrated using experiments where air flows through sand packs.

TL;DR: In this paper, the drift history of Gondwana with respect to Laurentia and Baltica during the Paleozoic is shown in a series of paleogeographic maps.

TL;DR: Inliers of f1.0-1.3 Ga rocks occur throughout Mexico and form the basement of the Oaxaquia microcontinent as mentioned in this paper, which are affected by two major tectonothermal events that are dated using U-Pb isotopic analyses of zircon.

TL;DR: In this article, the authors estimate the lithospheric velocity structure for the Arabian Shield by jointly modeling receiver functions and fundamental-mode group velocities from events recorded by the 1995-1997 Saudi Arabian Portable Broadband Deployment.

TL;DR: In this paper, three samples of gem quality plagioclase crystals of An60 were experimentally deformed at 900 °C, 1 GPa confining pressure and strain rates of 7.5-8.7×10−7 s−1.

TL;DR: Yin et al. as discussed by the authors obtained three new Middle-Late Ordovician and two Early Carboniferous paleomagnetic poles from the North Tien Shan Zone (NTZ) of the Ural-Mongol belt in Kyrgyzstan and Kazakhstan.

TL;DR: In this paper, the wavelet transform method is applied to the seismic wide angle reflection/refraction data of the Tianshan orogenic belt and the Junggar basin to obtain the small-scale structure of the crust-mantle transitional zone of the study area.

TL;DR: In this article, Pb isotopic signatures and U/Pb geochronology refute a Rodinian correlation of northeastern Laurentia and proto-Andean Amazonia, and propose that Amazonia may have collided with a contiguous southeastern Laurentia/Kalahari margin at ca. 1.3-1.0 Ga.

TL;DR: In this paper, the anisotropy of magnetic susceptibility (AMS) of single crystals of biotite, muscovite and chlorite has been measured in order to provide accurate values of the magnetic anisotropic properties for these common rock-forming minerals.

TL;DR: In this article, the authors show a gradual change from undeformed isotropic granodiorite to protomylonite, mylonite and ultramylonite towards its upper structural levels.

TL;DR: In this article, the U-Pb ages of more than 300 detrital zircons from Neoproterozoic and Early Paleozoic sedimentary rocks from Iberia and Brittany were analyzed using the laser ablation-ICP-MS technique.

TL;DR: The Roer Valley Rift System (RVRS) is located between the West European rift and the North Sea rift system and during the Cenozoic, the RVRS was characterized by several periods of subsidence and inversion, which are linked to the evolution of adjacent rift systems.

TL;DR: In this article, the Riphean sedimentary successions along the margins of the Siberian craton, together with recent geochronological and palaeomagnetic data from Siberia, require a revision of the hypothesis that Siberia was part of Rodinia.

TL;DR: In this article, the authors proposed that the Yeruda and Teya granites were formed as a result of collisional-accretional processes on the western margin of the Siberian craton during the Neoproterozoic.