Aspects of strikeslip tectonics in the inner moray firth. To address the influence of strike slip motion on petroleum system development, we constructed a threedimensional 3d basin and petroleum system model that incorporates strike slip. Connecting the tips of step over faults to the opposite fault are bounding basin sidewall faults. Integrating strikeslip tectonism with threedimensional. Diagenesis of paleogene sandstones in the padesh strikeslip. Injectioninduced seismicity and faultslip potential in the. Thrust wedge tectonics and strikeslip faulting in the sierra. The basin subsided by simple shear on lowangle, detached normal faults of the upper crust and by pure shear of the lower crust. Strike slip are relatively narrow and subverticalsystems. They discovered that strikeslip faults effectively produce two basins, separated by a pronounced intrabasin high, as a result of fault underlap figure 1. Dead sea transform, east anatolian and north anatolian faults. A geologic phenomenon associated with strike slip fault structures is.
A regional strike slip fault is referred to as a principle displacement zone pdz. Each is defined by the direction of movement of the ground as would be seen by an observer on the opposite side of the fault. Tectonics of strikeslip restraining and releasing bends. Modes of intraplate deformation, sedimentary basin evolution, and regional fault linkages c. The wharton basin, off southwest sumatra, ruptured to a large intraplate leftlateral strikeslip m w 7. Failure of the composite pullapart basin model and the role of tlf in the ncb formation. This special publication is an outgrowth of a research symposium held at the 1984 joint meeting of sepm and aapg in san antonio, texas. For infinitesimal simple shear of an idealized homogeneous body, the strikeslip zone boundary is a line of no. Strikeslip faulting is one of the most important mechanisms of sedimentary basin formation at plate convergent margins, where localized extension can cause. Many of these normal faults are rooted in the precambrian crystalline basement, and this episode of faulting has been attributed to basin subsidence and flexure produced by loading along the southeastern margin when the basin was tectonically overridden walper, 1982. The salinas basin is a strikeslip basin in central california with stratigraphy dominantly composed of miocene monterey formation. Pdf dynamics of basin formation and strikeslip tectonics.
Deformation pattern around the conjoining strikeslip fault. Based on balanced cross sections and depth structure maps covering two individual anticlines in the western qaidam basin, we calculate shortening and strike. Strikeslip history of the east gobi fault zone, mongolia. Tectonics of strikeslip restraining and releasing bends geological. Typical flower structures developed on the section, and strike slip faults showed an echelon. Dipietro, in landscape evolution in the united states, 20. Nov 18, 2018 by analysing the basin architectures and structures of each structural unit, calculating the fault growth index, and referring to the sandbox modelling results, we consider that the oujiang sag belongs to a strike. Recent sandbox models have shown that the geometry and evolution of pullapart basins varies greatly in pure strike slip situations versus transtensional settings. Giral1 1department of geological sciences, university of north carolina, chapel hill, nc 27599. Tsunamis from strikeslip earthquakes in the wharton basin. In this paper, we will examine the deforma tion around the junction of two prominent strike slip systems in the basin and range and test the premise that the geometry of and the slip across these faults may explain the observed. Strike slip deformations in the west siberian basin and their impact on oil and gas reservoirs 361 central european geology 52, 2009 fig.
The basin subsided by simple shear on lowangle, detached normal faults of the upper crust and by pure shear of the lower crust 45, 87. Pdf various types of sedimentary basins that contain a great variety of sedimentary successions and structural attributes form along strikeslip. The purpose of this paper is to explain the evolv ing process of strike slip faults and their accom panying basins, based on quaternary chronology and actual recent active fault traces. Later on, kounov 2002 explained the formation of late. Jun 15, 2019 the salinas basin is a strike slip basin in central california with stratigraphy dominantly composed of miocene monterey formation. Evolution of fault geometry and development of strikeslip. The most common transtensional zones are at releasing bends on strike slip faults, and in oblique rifts. For infinitesimal simple shear of an idealized homogeneous body, the strike slip zone boundary is a line of no. Despite a long history of oil production, aspects of petroleum system development in the basin remain poorly understood. Strike slip faults overprint older, now relict landscapes that include a subduction complex physiographically similar to the cascadia volcanic arc system, and a high plateau landscape the nevadaplano that existed in western nevadaeastern california prior to widespread basin and range extension and prior to the present. Dynamics of basin formation and strikeslip tectonics.
However, the development pro cess of the basin is still not explained clearly. In the midland basin and central basin platform, the faulting regime is consistently normalstrike slip, and the direction of the maximum horizontal compressive stress s hmax is approximately eastwest, although modest rotations of the s. The fault plane is essentially vertical, and the relative slip is lateral along in earthquake. At the very initiation of the strike slip fault a series of synclinal and anticlinal drag folds fig. Stepover basins transtensional or pullapart basins c. Strikeslip deformation, basin formation, and sedimentation.
A number of examples of strike slip related features are briefly described and illustrated in this paper in order to emphasise the prevalence of strike slip phenomena in the basin while at the same time attempting briefly to illustrate the control of deformation by a linkedfault system. Thrust wedge tectonics and strikeslip faulting in the sierra nacimiento, new mexico caleb j. Strikeslip deformations in the west siberian basin and their. Implications for basin structure and fluid flow article pdf available in basin research july 2018 with 823 reads how we measure reads. Characteristics of strikeslip inversion structures of the. An alternative origin was proposed by ivanov 1998 who claimed that the basin acquired wedgeshaped configuration and asymmetric topography as an effect of movements along regional strike slip faults. Strikeslip also called transcurrent, wrench, or lateral faults are similarly caused by horizontal compression, but they release their energy by rock displacement in a horizontal direction almost parallel to the compressional force. But implicit in the concept of a sedimentary basin is the existence of. The pure shear component arises from the compressional or extensional component across the zone, and the simple shear component from the strike slip displacement. Basins that develop along and adjacent to strikeslip faults are generally small and shortlived compared to those that develop in other platetectonic settings. A geologic phenomenon associated with strikeslip fault structures is. Webb syracuse university, copis introduction southeastern mongolia lies near the center of the largest mosaic of assembled tectonic. Pdf strikeslip basin its configuration and sedimentary. However, the depth of a pullapart basin is a function of stretching associated with strike slip displacement.
The relative importance of extension vs strike slip can be represented by the divergence angle alpha, which ranges from zero ideal strike slip to 90 degrees ideal extension. Dotted rectangle shows area of interest of this article. Strike slip faulting is a common mode of deformation in both continental and oceanic crust and occurs at a wide range of scales. Tectonics of strike slip restraining and releasing bends w. The evolution of this basin was profoundly influenced by strike slip movement on the rinconada fault, which bisected the depocenter beginning circa 15 ma. Dynamics of basin formation and strike slip tectonics. Pdf strikeslip basin its configuration and sedimentary facies. Dynamics of basin formation and strikeslip tectonics s. The basin formed originally as a sinistral strikeslip basin 77, 86, but developed into a dextral strikeslip basin after the change in the sense of fault displacement of the rrfz 87, 88. Dynamic interplay among tectonics, sedimentation, and. Possible strikeslip components on monoclines at the powder river basin black hills uplift margin. Constructive plate boundaries with oblique extension.
Stepover basins c transrotational basins venezuela basins nilsen and sylvester, 1995 pullapart basins fig. In recent years a significant body of new geological and geophysical data on strike slip basins had been acquired, and there had been significant progress in understanding the mechanisms by which basins form and deform in strike slip settings. Strikeslip basin its configuration and sedimentary facies. Strikeslip deformations in the west siberian basin and. Nov 21, 2012 the karatau fault is one of the important strike slip faults in central asia, and the south turgay basin is located towards its northern end. Detailed seismic interpretation indicated that the strike slip tectonism of the karatau fault weakened gradually from west to east in the south turgay basin. Strikeslip deformations in the west siberian basin and their impact on oil and gas reservoirs 361 central european geology 52, 2009 fig. The interior structure of the qaidam basin records kinematic information related to the regional deformation of the northern tibetan plateau.
Pdf on aug 28, 20, atsushi noda and others published strikeslip basin its configuration and sedimentary facies find, read and cite all the research you need on researchgate. Basin length is a function of stretching associated with strike slip displacement, and increased displacement causes the width of the fault zone to increase, resulting in wider pullapart basins. Intraplate strikeslip reactivation of the sinnyeong fault in. Basins of extensional and strikeslip settings is mu. Strike slip faults with leftlateral motion are also known as sinistral faults, and those with rightlateral motion as dextral faults. The basin formed originally as a sinistral strike slip basin 77, 86, but developed into a dextral strike slip basin after the change in the sense of fault displacement of the rrfz 87, 88. State of stress in the permian basin, texas and new mexico. Tectonic settings of strikeslip faults and related strikeslip basins. Mann2 1department of geology, university of leicester, leicester lei 7rh, uk email. Based on the compilation and comparison, the author states that despite the relative paucity of giant fields found associated with strike slip faults, several active strike.
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