Showing papers in "Tectonophysics in 1997"

TL;DR: In this article, the average rates of length change for all baselines of the network and those from nine continuously monitoring permanent stations are used in a least squares adjustment to estimate the velocities of the GPS stations relative to Paisha, Penghu, situated at the Chinese continental margin.

TL;DR: In this article, the authors focus on the Santonian compressional event, which occurred during the late Santonian tectonism, and interpret these phenomena as causally related aspects of a global tectonic event.

TL;DR: In this paper, the changes of fault kinematics and the stress field with time in the Baikal Rift System during the Cenozoic were investigated. But the results were limited to the central part of the rift and its southwestern termination.

TL;DR: In this paper, the authors used analytical solutions and two-dimensional numerical modeling to investigate the magnitude of these inaccuracies for conditions appropriate to many rapidly exhumed mountain chains of rugged relief.

TL;DR: In this article, multigrain concentrates of hornblende and muscovite together with whole-rock slate/phyllite samples have been dated using 40Ar/39Ar incremental-release methods along a systematic traverse across the various lithotectonic structural elements which comprise northwestern sectors of the Variscan Iberian Massif.

TL;DR: The Mesozoic geology of Zhejiang Province in southeastern China is characterized by two distinct geodynamic settings separated by a major tectonic event as discussed by the authors, which is likely related to the collision of the China-Indochina margin with the West Philippine Block.

TL;DR: In this article, the authors recognized the consistent occurrence of the subduction wedge and collision prism onshore and offshore Taiwan and reconstructed the evolution of the accretionary prism during subduction and collision tectonics of Taiwan.

TL;DR: In this paper, the thin-skinned tectonics hypothesis was formulated to explain mainly the geologic and relatively shallow structures in Taiwan orogeny, which can be used continually to test critically hypotheses of the Taiwan Orogeny.

TL;DR: The existence of Indosinian movements in Vietnam, as they have been defined by previous authors during the early century, is now accurately confirmed and this is the first insight in the occurrence of ductile strike-slip tectonics of indosinian age along NW-SE fault zones as mentioned in this paper.

TL;DR: The central Apennines fault system (CAFS) of peninsular Italy, overprints earlier structures of a Neogene fold and thrust belt and includes segments characterized by diffuse seismicity distributed within a NNW-SSE-trending zone, 50 km wide as discussed by the authors.

TL;DR: In this paper, the authors show that the Songpan-Ganze fold belt and Longmen Mountains Thrust-Nappe Belt reveal several phases of differential cooling across major listric thrust faults since Early Cretaceous times.

TL;DR: In this article, the authors show an active continental margin flanked by the eastern NCB, and a passive continental margin was present along the west side of the SCB, both margins initially trending N-NE.

TL;DR: In this paper, the inversion method of Gephart and Forsyth (1984) was applied to three subsets of the data, each of which has been chosen taking into account the local tectonic units.

TL;DR: In this paper, the authors assume a simple kinematic model in which the lower and upper subducted European crusts are decoupled along a decollement, and the upper crust deforms by pure shear with a horizontal compressional axis.

TL;DR: In this paper, the role of intergranular and intragranular crystal boundaries has been considered and two specific approximations for boundary formation and orientation obtained using the SEM electron channelling technique are presented.

TL;DR: In this article, the authors proposed a thermal model to estimate the current isotherms in the Himalayan belt from a single thrust model, assuming a geometry based on the INDEPTH seismic profile, which shows underthrusting of the whole Indian crust below the crustal wedge of the High Himalayas, and possibly as far as the Indus-Tsangpo suture.

TL;DR: In this article, the authors proposed that ultramafic outcrops may be common in the crust formed between 14°30′N and 15°50′N during at least the past 2.4 m.y.

TL;DR: In this article, the authors make an attempt to explain the process of rock deformation using a pressure solution mechanism, which assumes that matter is dissolved inside the contact between two grains, and the resulting solutes are transported to the pore fluid through diffusion along an adsorbed water film.

TL;DR: In this article, multichannel seismic reflection profiles reveal the tectonic and stratigraphic complexity of the Caribbean province and show other seismic evidence of volcanism (sills and dipping horizons).

TL;DR: In this article, the Caledonian collision zone is exposed along the west coast of Norway, allowing the study of processes and petrophysical conditions at the deepest crustal levels.

TL;DR: In this paper, the results of anisotropy of magnetic susceptibility (AMS) analyses carried out in weakly deformed Neogene and Quaternary clay-rich sediments from different compressional and extensional settings of the Italian peninsula were discussed.

TL;DR: In this paper, a model is presented whereby an upper 5-10-thick flake of the Ontong Java Plateau is obducted over the Solomon arc to form the Malaita island.

TL;DR: In this article, radiometric and chronostratigraphic ages and paleomagnetic and sedimentary information are used to relocate ophiolites in the frame of the evolving Indian Ocean.

TL;DR: In this paper, a tomographic image of the mantle beneath the French Massif Central reaching a depth of 270 km is interpreted in terms of mantle temperature, considering effects of anharmonicity and anelasticity on seismic velocities as well as effects of mineral reactions, composition and partial melt.

TL;DR: In this paper, the slip and twinning systems in calcite polycrystals were modeled and the authors concluded that two regimes of slip system activity exist, namely, a low-temperature regime involving e twinning, slip on r〈 2 021〉 ± and on f〈2 2 01〉 − (positive direction not reported), and a high temperature regime with r, f and c slip systems.

TL;DR: Using a simplified petrogenetic grid and a one-dimensional thermal model to compute the evolution of the density of the crust with time, the contribution to the uplift of Tibet of metamorphic transitions in the lower crust is shown to be large as mentioned in this paper.

TL;DR: In this article, the authors show that the exhumation rate is also governed by the angle between the plate boundary and the displacement vector (α), implying that the convergent plate boundaries are complex transpressive systems in which the degree of obliquity can be expressed by the ratio of pure to simple shear components.

TL;DR: In this paper, a detailed kinematic evolution of the collision between the Luzon arc and the former Ryukyu subduction zone is proposed both in plan views and in cross-sections.

TL;DR: In this paper, the authors investigated the influence of healing duration and temperature on the strength and healing rate of simulated faults in a triaxial pressure vessel at elevated pressures and temperatures.

TL;DR: In this paper, the authors investigated the influence of different parameters on the style of rifting in different continental rift systems (European, Red Sea-Gulf of Aden, and East African Rift Systems) and found that the rifting process was mainly controlled by the far-field stress regime and the presence or absence of a mantle plume.