Showing papers in "Journal of Structural Geology in 2005"

TL;DR: In this article, the authors discuss different aspects of detachment folding well illustrated in the studied area in particular, focus on: salt mobility, multiple decollements and late basement control.

TL;DR: In this paper, the authors monitor the displacement field in scaled tectonic model experiments using high-resolution optical image correlation techniques (particle imaging velocimetry, PIV).

TL;DR: In this paper, the sinistral ductile shear belts in the southern part of the Tan-Lu fault zone, East China are exposed along the eastern edge of the northern Dabie belt and southern Zhangbaling belt.

TL;DR: In this article, two separate sets of measurement techniques have been developed to quantify individual crystals (phenocrysts, porphyroblasts) or void spaces within a sample, and then perform a more general fabric analysis on any distinguishable component in a sample.

TL;DR: In this article, the authors examined the spatial arrangement of fractures in the damage zones of a segment of the large-scale Moab Fault (45 km in length), SE Utah, and found that the structural pattern across the fault zone is strongly asymmetric.

TL;DR: In this paper, the structural context of the 1999 Chi-Chi earthquake (M w = 7.6) in western Taiwan, which is one of the best-instrumented thrust-belt earthquakes, is discussed.

TL;DR: In this article, the authors presented new data and interpretations from their structural studies and thermochronological dating, and used them to advance the understanding of the kinematics of the Xuefengshan tectonic belt and the Mesozoic tectonics of the South China Block (SCB).

TL;DR: In this paper, the authors studied the effect of initial dilatant brittle fracture and associated fluid-rock interaction on the geometry of subsequent ductile shear zones in continuous glaciated exposures of metagranodiorites.

TL;DR: In this paper, the Jinsha Thrust is shown to be the boundary between the western Yidun Arc and the eastern Qiangtang Block, and the structural geometry of the jinsha thrust suggests that Early Triassic subduction was east-dipping along the JINSHA Jiang Suture.

TL;DR: In this article, the authors examined the Cape Egmont Fault in offshore New Zealand, using good quality seismic-reflection data tied to wells and seabed bathymetry.

TL;DR: In this paper, two phases of south-directed deformation are identified: D 1, associated with pervasive thickening of the Songpan Garzi sedimentary pile and detachment of that portion of the fold belt onlapping the Yangtze passive margin; and D 2, a localized phase of deformation associated with transpressive shortening of a fold belt's southeast margin.

TL;DR: In this article, the authors used deformed marker surfaces to define the three-dimensional deformation field associated with their surface expression and to map displacement and length on ∼40 fault segments.

TL;DR: In this article, the authors applied 40 Ar/39 Ar dating of size fractions of fault rocks with varying detrital and authigenic clay content, and showed that the clay fabrics in fault rocks are poorly developed, indicating that fluids were not confined to the fault zone by preferentially oriented clays.

TL;DR: In this article, the San Andreas and Walker-Lane faults are divided into subparallel strike-slips and dip-slip faults, respectively, and the relative right-lateral Pacific-North American transform motion across the western US is largely taken up by the San and Walker Lane fault systems.

TL;DR: In this paper, the authors analyzed the displacement field of an isolated two-dimensional mode II fault in an infinite, homogeneous elastic body in response to fault slip and showed that both normal and reverse drag can develop at the fault center depending on the angle between the markers and the fault.

TL;DR: In this article, two different methods are presented to obtain average surface orientations from points belonging to the surface, one consists of calculating a best-fit plane through a planar regression of data, which yields an average orientation for sets of more than three points.

TL;DR: In this paper, the authors propose three categories of syn-shearing folds in ductile shear zones: pre-existing folds, newly formed or modified during the shearing event, and final fold geometry depending on the vorticity within the shear zone, the rheology and the initial orientation of the folded surface relative to the kinematic framework.

TL;DR: In this paper, the authors show that the reactivation of pre-existing discontinuities and their orientation control can control the geometry and evolution of a younger fault network, including the evolution of the main fault orientation distribution through time, the geometry of relay fault zones, small scale faulting, and location of fault-controlled basins and depocenters.

TL;DR: In this paper, the authors present a series of experiments that show when the two materials can be used interchangeably, document the differences in deformation patterns and discuss how best to evaluate and apply results of physical models.

TL;DR: In this article, a detailed surface mapping reveals that most fault-like shear zones are arranged en-echelon, mainly forming contractional steps, and this reveals very steep displacement gradients close to the shear zone tips.

TL;DR: In this article, the cross-sectional structure and the grain size distribution of 10 strike-slip fault cores less than 1 m thick were studied through field and laboratory analyses, the fault cores are exposed in Jurassic platform limestone within the Mattinata Fault zone located in the Adriatic-Apulian foreland of southern Italy.

TL;DR: In this paper, an analogue modelling experiment is performed to determine factors affecting the style of deformation during inversion of an asymmetric graben structure, specifically variations in thickness and distribution of strong and weak layers constituting the graben fill and initial basin orientation.

TL;DR: In this article, an algebraic method to calculate a fabric ellipsoid from planar sections through the rock is presented, and the quality of fit to the data is assessed in all cases.

TL;DR: In this paper, the Umbria-Marche-Sabina Thrust Zone is shown to be composed of a series of partially overlapping fault segments, rather than consisting of a single, continuous thrust.

TL;DR: In this paper, the effect of water on the rheological behavior of rocksalt is investigated and a flow law for wet rocksalt that incorporates the effects of solution-precipitation creep and fluid-assisted grain boundary migration is presented.

TL;DR: In this paper, the authors studied over 450 segmented faults, many of which contain clay smear, in an excellent outcrop exposing a collapsed crest structure, and found that important elements of fault zone evolution are: (i) clay smear and telescoping on parallel strands, and (iii) preferred deformation offault-bounded lenses.

TL;DR: In this article, the authors analyzed a population of exceptionally well-exposed and preserved minor normal faults, vertically restricted to a brittle carbonate series by overlying and underlying plastic clay layers.

TL;DR: In this article, the authors presented magnetic susceptibility data from the Godhra Granite, a ca. 1.1 Ga pluton at the southern margin of the Aravalli Mountain Belt (western India) that lies near the Central Indian Tectonic Zone (CITZ).

TL;DR: In this paper, a case study from the Carboniferous Northumberland Basin shows that shortening structures can also form in obliquely divergent rifts if the bulk strain undergoes kinematic partitioning into distinct regions of wrench-and extension-dominated transtension.

TL;DR: The Maiden Creek sill is a small intrusion (w 1k m 2 in map view) that is part of the Tertiary igneous complex of the Henry Mountains in southern Utah as mentioned in this paper.