Showing papers in "Tectonophysics in 2008"

TL;DR: In this paper, a diachrony of Cadomian and related geotectonic processes along the northern realm of the Gondwana Supercontinent is modeled by making use of new LA-ICP-MS U-Pb ages from detrital zircons of sedimentary rocks of Late Neoproterozoic (Ediacaran) and Cambro-Ordovician sediments of the Ossa-Morena Zone (Iberian Massif) compared with those from the Saxo-Thuringian Zones (Bohemian Mass

TL;DR: The Database of Individual Seismogenic Sources (DISS) as mentioned in this paper contains the results of the investigations of the active tectonics in Italy during the past 20 years and provides a fresh and unified view of active and seismogenic processes in Italy by building on basic physical constraints concerning rates of crustal deformation, on the continuity of deformation belts and on the spatial relationships between adjacent faults, both at the surface and at depth.

TL;DR: The Variscan accretionary complex as discussed by the authors is a new name for the most widely distributed metamorphic rocks connected to the Anarak and Jandaq complexes, and it is directly related to the tectonic evolution of the Paleo-Tethys Ocean.

TL;DR: In this paper, the location of Gondwana-derived terranes should not only be guided by the models, but should also consider the possible detrital input from some Asian blocks (hunia), which accreted in the Silurian to the North-Chinese block.

TL;DR: In this paper, an ion microprobe and thermal-ionization zircon U-Pb geochronological data from granitoids and orthogneisses from several locations in central Iran and the Sanandaj-Sirjan structural zones were used to determine crystallization ages and investigate the origin and continental affinity of these various crustal fragments.

TL;DR: In this article, the authors proposed a new seismic source model for Italy to be used as an input for country-wide probabilistic seismic hazard assessment (PSHA) in the frame of the compilation of a new national reference map.

TL;DR: In this paper, detrital zircon age spectra from 14 sandstones of the Alborz mountains, Zagros mountains, and central Iranian plateau provide an initial framework for understanding the Neoproterozoic to Cenozoic provenance history of Iran.

TL;DR: In this paper, the authors proposed a plate tectonic model where the Anatolian ophiolitic front is linked up with the Samail/Baer-Bassit obduction front found along the Arabian margin.

TL;DR: In this paper, high-pressure and ultra-high-pressure rocks with origins in a variety of protoliths occur in various settings: accretionary wedge, oceanic subduction zone, subducted continental margin and continental collisional zone.

TL;DR: However, the geological history of Borneo is not consistent with the island simply forming part of a large block extruded from Asia as discussed by the authors, and there is no evidence that the major strike-slip faults of the Asian mainland reach Borneó.

TL;DR: In this article, the authors presented a new detailed high-quality solution of continuous and campaign-type measurements acquired between 1993 and 2003, where a special effort was made to obtain consistent results with highest possible accuracies and reliabilities.

TL;DR: In this paper, the regional crustal structure, oceanic age distribution, and conjugate margin segmentation in and around the Lena Trough, the oceanic part of the Fram Strait between the Norwegian-Greenland Sea and the Eurasia Basin (Arctic Ocean), were revised.

TL;DR: In this paper, the age of the Bakhtiyari Formation in the High Zagros has been investigated and it has been shown that the mostproximal exposures were deposited during the early Miocene and probably Oligocene.

TL;DR: In this article, the authors conducted U-Pb geochronological analyses of detrital-zircon grains from turbidites in the composite Hangay-Hentey basin of central Mongolia.

TL;DR: In this paper, a fine-scale 3D P and S-wave velocity structures of the crust and upper mantle beneath the whole Japan Islands with a unified resolution was constructed, where the Pacific (PAC) and Philippine Sea (PHS) plates subduct beneath the Eurasian (EUR) plate.

TL;DR: In this paper, an alternative model for the geodynamic evolution of Southeast Asia is proposed and inserted in a modern plate tectonic model, which is based on dynamic plate boundaries, constrained by data such as spreading rates and subduction velocities; in this way it differs from classical continental drift models proposed so far.

TL;DR: In this paper, water-saturated talc gouge at room temperature yield values of the coefficient of friction, μ (shear stress, τ/effective normal stress, σ′N) in the range 0.16-0.23, and μ increases with increasing σ−N.

TL;DR: In this paper, the authors quantified the timing and extent of exhumation across the southern Cape escarpment and coastal plane, using apatite fission track analysis (AFTA) of 25 outcrop samples and 31 samples from three deep boreholes (KW1/67, SA1/66, CR1/68).

TL;DR: In this article, the authors investigated the role and significance of pre-Tertiary tectonic events commonly used to interpret the geological evolution of the Zagros Mountains of Iran.

TL;DR: A temporal seismic network recorded local seismicity along a 130 km long segment of the transpressional dextral strike-slip Liquine-Ofqui fault zone (LOFZ) in southern Chile.

TL;DR: In this article, the Songpan-Ganzi complex is divided into different depocenters: a northeastern depocenter (SGC-NE), a eastern-central depoccenter (sGC-EC), and a northwestern depocentre (schemas SGC-NW).

TL;DR: The relationship between orogenic segments of the Western Alps and the Northern Apennines is explored in this paper integrating recently published 3D tomographic models of subduction with new and reinterpreted geological observations from the eclogitic domain of the Voltri Massif (Ligurian Alps, Italy), where the two belts joint each other.

TL;DR: In this paper, the authors provide new isotopic data from the Pontides, which substantiate the presence of a Cadomian basement with latest Proterozoic granitoids but also show the existence of Ordovician intrusives.

TL;DR: In this article, the authors show that the presence of arc-related rocks in the HP assemblage suggests that the arc complex was also removed, whereas the MORB rocks may have been derived from the subducting slab.

TL;DR: In this paper, the authors conducted a study of Late Carboniferous to Late Permian subduction-related volcanics from the middle (NW, NE, NE) and north-eastern (NE) limbs of the orocline.

TL;DR: T Tinker et al. as mentioned in this paper investigated the geomorphic origin and evolution of the tectonically unique interior highland of southern Africa, the Kalahari Plateau, and its flanking low-lying coastal planes, using abundant well data and a seismic reflection profile.

TL;DR: In this paper, the electron backscattering diffraction technique (EBSD) was used to analyze bulging recrystallization microstructures from naturally and experimentally deformed quartz aggregates, both of which are characterized by porphyroclasts with finely serrated grain boundaries and grain boundary bulges set in a matrix of very fine recrstallized grains.

TL;DR: In this article, the authors analyse two end-member models of temporal and spatial interactions between thick and thin-skinned structures in a thrust front with pre-existing rift structures, and propose a revised kinematic model of thick- and thin skin interaction and define the temporal-spatial evolution of the Malargue fold-and-thrust belt.

TL;DR: The Ossa Morena Zone of SW Iberia represents a continental arc accreted to the Iberian Autochthon during the Late Proterozoic-Early Cambrian Cadomian orogeny as discussed by the authors.

TL;DR: In this paper, the Tertiary Tsangpo Suture has been displaced by the growing antiform and as a consequence, the antecedent river has been dragged in a left-lateral sense along the exhuming north-plunging dome.