A comparative study of well mapped active and ancient pullapart basins suggests a qualitative model for their continuous development. Discussion on structural development and stratigraphy of. Stop by to find used car parts or call us to get cash for your junk car today. Anderson and silver, 1979, this volume, extending from southeastern california and northwest. Shape and dimensions of the cerro prieto pullapart basin, mexicali, baja california, mexico, based on the regional seismic record and surface structures. Geothermal systems constrained by the sumatran fault and its pullapart basins in sumatra, western indonesia. The rhombohedral shape of the japan basin and the particular tectonic behaviour of the margins on both east and west sides can be explained by an early eooligocene rifting of a pullapart basin accommodated along two large rightlateral shear zones, east of korea and west of. The formation and evolution of the qiaojia pullapart. We define this process of flooding of marine waters into an adjacent basin as breaching figs. In the third dimension, the depth of the pullapart basin is related to the length in an equation presented by. Meanwhile, kinematic models include overlap of sidestepping faults, slip on divergent fault segments, and coalescence of scaledependent basins. Transform and transcurrentfault strikeslip basins relatively small, elongate, rapid subsidence 14. The stratigraphic and structural characteristics of the. Mechanical aspects of pullapart basins and pushup swells.
Subsequent exploration and development provided data that support the concept that the natural gas fields in cottle and king counties, northcentral texas, mark the extent of a hydrocarbon system related to the broken bone graben, an elongate 180 km 2 pullapart basin in southeastern cottle county. Collett3 1department of mining and geological engineering, university of arizona, tucson, az 85721. Pull a part is a superior alternative to digging through a junk yard. The inset map shows the regional tectonic setting of the study areain box. Although formerly described as the first impact structure to be recognized in the uk, its spatial association with local tectonic and stratigraphic features suggests that it is unlikely to have been caused by a random extraterrestrial event. Pullapart basin a continuum model of pullapart basin development had been proposed based on. The steep sides are created by displacement on faults such that the valley floor moves down relative to the surrounding margins, or, conversely, the margins move up relative to the. The spb have been developed as a transtensional pullapart basin resulted from stepping over of the semangko to ujung kulon segments of the sfz. Pull apart basins and pushup swells are common features at steps along strikeslip faults. A simple model suggests that the width of the rhombs is controlled by the initial fault geometry, whereas the.
Finite element modelling of the pullapart formation. The new model is structurally impossibl e, an d conflicts with the geomorphology, geology, and tectonic setting of kashmir basin. Mechanical aspects of pullapart basins and pushup swells with applications to the dead sea transform. The silverpit crater consists of a set of concentric faults up to 20 km in diameter in the southern north sea. As large 4,000 km2 as the acve long valley ri volcanic center and pullapart basin, and similarly contains a caldera over part of the. The kashmir basin i s suggested to have formed through a piggyback basin deformation style, however new studies alam et al. Three hundred kilometers of continuous marine gravity data, collected in a lake occupying the northern part of the basin, were. The stepping over of the fault segments in these pull apart basins are performed by the eastward warping of. The basin is located within a valley which defines the dead sea transform plate boundary between africa and arabia. Reexamination of published seismic data in the southeasternmost segment of the active sumatra fault zone sfz reveals the characteristics of structural style and depositional history of semangko pull apart basin spb. Extinction of pullapart basins in the sea of marmara.
A simple model suggests that the width of the rhombs is controlled by the initial fault geometry, whereas the length increases with increasing fault displacement. The peru bank is part of the cretaceouspaleogene assessment unit. Several drill holes were used to reveal the internal structure of the basin. Geologists refer to this region as the salton trough, as it is located within an active pullapart basin. Pull aparts evolve from incipient to extremely developed basins through a sequence of closely related states. Sandbox analogue models of pullapart basins that developed in sedimentary strata above releasing steps in underlying basement faults are characterized by rhombic basins that are flatbottomed box grabens with a subhorizontal synkinematic basin infill. Controls of pullapart basin size and subsidence rate on. It is followed, during upper oligocenelower miocene, by the main opening of the japan basin as a mega pullapart.
Pull apart basins begin as a result of transformrelated tectonics and may culminate as rift zones mann et al. Progressive widening of pull apart basins is accommodated by formation of additional normal faults. Briefly, in this model, the sea of marmara has opened in a uniform manner as a. In geology, a basin is a region where subsidence generates accommodation space for the deposition of sediments. This simple block model shows a simple example of a pull. In general, formation of a pull apart basin needs stepping over of two fault segments. Dec 30, 2014 quennell, who was the first to recognize a pullapart basin without using this term, proposed that the dead sea is a void in the crust caused by the overlapping segments of the dead sea fault zone. Pullapart basins at releasing bends of the sinistral late. Their structural, drainage, and depositional systems generally support a pull apart basin sedimentation model based on ancient pull apart basin deposits. For the same purpose, the first use of the term pullapart basin by burchfiel and stewart. Benavraham editor, sedimentary basins within the dead sea and other rift zones. These are related to a pullapart basin controlled by the xiaojiang strikeslip fault.
Comparison of 3d data from the wellknown active and ancient pull apart basins suggests that there may be an empirical relationship among the length, width, and depth parameters in 3d. Pullapart basins and pushup swells are common features at steps along strikeslip faults. Structure of the dead sea pullapart basin from gravity. Geothermal systems constrained by the sumatran fault and. Geothermal systems constrained by the sumatran fault and its. So, get ready to experience some of anzaborregos most geologically rich areas on your. This model involves marginal coarsegrained sedimentation adjacent to master faults, axial finegrained sedimentation away from. Pull apart basins at releasing bends of the sinistral late jurassic mojavesonora fault system 101 spe39303 page 101 of the mojavesonora megashear silver and anderson, 1974. Synkinematic basin infill was added progressively as the models were deformed. The centre of a rhomb graben is the site of greatest extension and subsidence across a pullapart structure.
Tectonic basins and rift valleys landform britannica. Pdf development of pullapart basins dwight bradley. Pull apart is a superior alternative to digging through a junk yard. Tectonic evolution of the irra pullapart basin evidences of slip reversals on the romeral fault zone, northern part of andean central cordillera, colombia sierra et al 147 contains hyperconcentrated. Hein, in transform plate boundaries and fracture zones, 2019. Scaled sandbox models have successfully simulated the geometries and progressive evolution of pull apart basins developed in a weak sedimentary cover above rightstepping releasing dextral strikeslip fault systems in rigid basement. It is followed, during upper oligocenelower miocene, by the main opening of the japan basin as a mega pull apart. The jogs and therefore the pullapart basins become extinct and strikeslip faults become straight as time passes. Unlimited viewing of the articlechapter pdf and any associated supplements and figures. Pull apart basins are depressions bounded on their sides by two or more strikeslip faults and on their ends by diagonal transfer faults. Progresotumbes has been described as a pull apart sub basin. During the early stage, main displacement strikeslip faults are not linked with the normal faults that bound the edges of the pull apart basin.
Rhomboidal basins, which have larger basin length than the amount of motion, form in overlapping systems and do not progress through the spindle. Smaller, comparable in volume to the acve lassen arc volcanic center and pull. This basin also becomes wider southward the nearest masurai volcanic cluster. The tectonic framework of a complex pullapart basin. The rhombohedral shape of the japan basin and the particular tectonic behaviour of the margins on both east and west sides can be explained by an early eooligocene rifting of a pull apart basin accommodated along two large rightlateral shear zones, east of korea and west of northeast japan and sakhalin. A numerical study of strikeslip bend formation with. Tectonic basins and rift valleys, landforms characterized by relatively steep, mountainous sides and flat floors. The brittle upper crust is modeled by a boundary element. New insights into the origin of the north anatolian shear zone.
Geometric characteristics of pullapart basins lithosphere. We model the threedimensional 3d crustal deformation in a deep pullapart basin as a result of relative plate motion along a transform system and compare the results to the tectonics of the dead sea basin. Feb 28, 2011 a pull apart basin is a basin formed when a kink or bend in a strikeslip fault forms a releasing section with normal faults along strike. A pullapart basin is a structural basin where two overlapping en echelon faults or a fault bend creates an area of crustal extension undergoing tension, which causes the basin to sink down.
As proposed by theoretical, experimental, and numerical. An active composite pullapart basin within the central. Pull apart basin tectonic model is structurally impossible. They attributed both the basin opening and inversion to the indiaasia collision, assuming that the tectonic history of the basin was analogous to.
Frequently, the basins are rhombic or sigmoidal in shape. Discussion on structural development and stratigraphy of the. Folds caused by minor wrench movements provided shoaling conditions along the southwest shallow carbonate shelf where porous algal mounds developed. A comparative study of well mapped active and ancient pull apart basins suggests a qualitative model for their continuous development. A pull apart basin is a structural basin where two overlapping en echelon faults or a fault bend creates an area of crustal extension undergoing tension, which causes the basin to sink down. These basins are called pull apart basins because the crust is literally pulled apart in the section between the two strikeslip faults. In the third dimension, the depth of the pull apart basin is related to the length in an equation presented by. Development of pullapart basins the journal of geology. But implicit in the concept of a sedimentary basin is the existence of.
Structural mechanism comprises overstep basin and faultbend basin figure 1. Anderson and silver, 1979, this volume, extending from southeastern california and. Breaching of strikeslip faults and successive flooding of. Penuh pull apart basin is situated north of the masurai volcanic cluster. Analyses and modeling of gravity data in the dead sea pullapart basin reveal the geometry of the basin and constrain models for its evolution. An active composite pullapart basin within the central part of the north anatolian fault system. Pullapart is a superior alternative to digging through a junk yard. Conceptually, oblique rifting should lead to stepwise expansion of a nascent ocean basin by linking pullapart basins fig. Lithologic and structural attributes are consistent with deposition in a strikeslip pullapart basin.
Pages in category pull apart basins the following 7 pages are in this category, out of 7 total. Meanwhile, continued tectonic movement and space reduction of the basin floor may have triggered salt flowage and diapirism in. Progresotumbes has been described as a pullapart subbasin. Mechanical aspects of pull apart basins and pushup swells with applications to the dead sea transform.
Pullaparts evolve from incipient to extremely developed basins through a sequence of closely related states. Intracontinental quaternary volcanism in the niksar pull. Scale characteristics of pull apart basins in literature present good 2d relationships between basin length and width, and basin length and depth. Other articles where pull apart basin is discussed.
Failure of the composite pullapart basin model and the role of tlf in the ncb formation. The basin is divided from north to south into the paleogene santa elena sub basin, and the neogene progreso and tumbes subbasins. Pull apart basin a continuum model of pull apart basin development had been proposed based on. Pullapart basins at releasing bends of the sinistral late jurassic mojavesonora fault system 101 spe39303 page 101 of the mojavesonora megashear silver and anderson, 1974. Sedimentary basins range in size from as small as hundreds of meters to large parts of ocean.
Present study is the first attempt to model numerically beng co pullapart basin in the southern tibet. New and compiled map data from several areas, including the northern caribbean and turkey, suggests the following stages in pullapart development. Here, i compiled the major results on geometries of pullapart basins of previous workers and then examined the geometric characteristics of pullapart basins along the north anatolian fault zone. Their structural, drainage, and depositional systems generally support a pullapart basin sedimentation model based on ancient pullapart basin deposits. The erzincan, susehri, niksar, and lake hazar basins are actively evolving pullapart basins in eastern turkey. Pdf crossbasin faulting and extinction of pullapart. Our field investigations include determining the surface characteristics of the qiaojia basin which consists of three terrace sequences and a series of alluvial fans. Development of pullapart basins article pdf available in the journal of geology 915 february 1983 with 3,088 reads how we measure reads. Basin analysis basin analysis is a process that requires the.
Field observations and analogue models show that in the later stages of this widening, the crossbasin faults cut the floor of the pullapart basins and link the offset principal displacement zones. The basin is divided from north to south into the paleogene santa elena subbasin, and the neogene progreso and tumbes subbasins. Structure of the dead sea pull apart basin from gravity analyses. The merzifonsuluova active, composite pullapart basin, turkey 474 introduction. Pdf structure of the dead sea pullapart basin from. Subsequent exploration and development provided data that support the concept that the natural gas fields in cottle and king counties, northcentral texas, mark the extent of a hydrocarbon system related to the broken bone graben, an elongate 180 km 2 pull apart basin in southeastern cottle county. The erzincan, susehri, niksar, and lake hazar basins are actively evolving pull apart basins in eastern turkey.
196 766 1290 151 409 112 150 278 980 270 1061 467 209 1327 432 881 617 1423 782 761 658 1137 645 180 1324 1095 1121 354 624 486 257 875 974 1396 718 1002 634